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Income Taxes (Details) (USD $)
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3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Current Tax Provision Benefit [Line Items] | |||||||||||
| Federal current tax provision | $ 24,006,000 | $ 10,468,000 | $ 40,675,000 | ||||||||
| State current tax provision | 6,966,000 | (5,040,000) | 29,539,000 | ||||||||
| Total current tax provision (benefit) | 30,972,000 | 5,428,000 | 70,214,000 | ||||||||
| Deferred Tax Provision Benefit [Line Items] | |||||||||||
| Federal deferred tax provision | 186,396,000 | 158,709,000 | (30,243,000) | ||||||||
| State deferred tax provision | (33,273,000) | 484,000 | (7,000) | ||||||||
| Total deferred tax provision (benefit) | 153,123,000 | 159,193,000 | (30,250,000) | ||||||||
| Provision for income taxes | 54,341,000 | 28,291,000 | 49,286,000 | 52,177,000 | 41,954,000 | 38,942,000 | 48,980,000 | 34,745,000 | 184,095,000 | 164,621,000 | 39,964,000 |
| Gross Unrecognized Tax Benefits Reconcilement [Line Items] | |||||||||||
| Unrecognized Tax Benefits, Beginning Balance | 11,896,000 | 49,506,000 | 11,896,000 | 49,506,000 | |||||||
| Gross increases for tax positions taken during prior years | 0 | 0 | |||||||||
| Gross decreases for tax positions taken during prior years | (5,650,000) | (37,610,000) | |||||||||
| Unrecognized Tax Benefits, Ending Balance | 6,246,000 | 11,896,000 | 6,246,000 | 11,896,000 | 49,506,000 | ||||||
| Provision (benefit) for income taxes reconcilement | |||||||||||
| Provision (benefit) for income taxes computed at the statutory rate | 288,791,000 | 247,532,000 | 123,310,000 | ||||||||
| Tax-exempt interest income | (15,752,000) | (9,695,000) | (6,680,000) | ||||||||
| Tax-exempt bank owned life insurance income | (19,151,000) | (21,169,000) | (20,595,000) | ||||||||
| Dividends | 0 | (17,744,000) | 0 | ||||||||
| Asset securitization activities | 0 | 0 | 0 | 0 | 46,160,000 | ||||||
| General business credits | (49,654,000) | (31,269,000) | (23,360,000) | ||||||||
| State deferred tax asset valuation allowance adjustment, net | (21,251,000) | 0 | 0 | ||||||||
| Capital loss | (18,659,000) | (7,000,000) | (62,681,000) | ||||||||
| Loan acquisitions | 0 | 0 | (43,650,000) | ||||||||
| Affordable housing investment amortization | 13,621,000 | 5,983,000 | 4,344,000 | ||||||||
| State income taxes, net | 4,152,000 | (2,962,000) | 19,196,000 | ||||||||
| Other, net | 1,998,000 | 945,000 | 3,920,000 | ||||||||
| Provision for income taxes | 54,341,000 | 28,291,000 | 49,286,000 | 52,177,000 | 41,954,000 | 38,942,000 | 48,980,000 | 34,745,000 | 184,095,000 | 164,621,000 | 39,964,000 |
| Deferred Tax Assets | |||||||||||
| Allowance for credit losses | 282,175,000 | 348,269,000 | 282,175,000 | 348,269,000 | |||||||
| Loss and other carryforwards | 215,232,000 | 217,877,000 | 215,232,000 | 217,877,000 | |||||||
| Fair value adjustments | 84,740,000 | 92,569,000 | 84,740,000 | 92,569,000 | |||||||
| Accrued expense / prepaid | 39,813,000 | 32,736,000 | 39,813,000 | 32,736,000 | |||||||
| Purchase accounting adjustments | 8,383,000 | 10,556,000 | 8,383,000 | 10,556,000 | |||||||
| Partnership investments | 7,148,000 | 0 | 7,148,000 | 0 | |||||||
| Other | 17,883,000 | 15,661,000 | 17,883,000 | 15,661,000 | |||||||
| Total deferred tax assets | 655,374,000 | 717,668,000 | 655,374,000 | 717,668,000 | |||||||
| Deferred Tax Liabilities | |||||||||||
| Lease financing | 122,395,000 | 65,029,000 | 122,395,000 | 65,029,000 | |||||||
| Purchase accounting adjustments | 50,704,000 | 51,754,000 | 50,704,000 | 51,754,000 | |||||||
| Loan origination costs | 61,189,000 | 51,124,000 | 61,189,000 | 51,124,000 | |||||||
| Mortgage servicing rights | 30,686,000 | 45,948,000 | 30,686,000 | 45,948,000 | |||||||
| Securities adjustments | 30,713,000 | 40,273,000 | 30,713,000 | 40,273,000 | |||||||
| Operating assets | 35,655,000 | 33,511,000 | 35,655,000 | 33,511,000 | |||||||
| Pension and other employee benefits | 33,898,000 | 19,290,000 | 33,898,000 | 19,290,000 | |||||||
| Partnership investments | 0 | 6,761,000 | 0 | 6,761,000 | |||||||
| Other | 21,447,000 | 15,558,000 | 21,447,000 | 15,558,000 | |||||||
| Total deferred tax liabilities | 386,687,000 | 329,248,000 | 386,687,000 | 329,248,000 | |||||||
| Net deferred tax asset before valuation | 268,687,000 | 388,420,000 | 268,687,000 | 388,420,000 | |||||||
| Valuation allowance | (64,812,000) | (23,594,000) | (64,812,000) | (23,594,000) | |||||||
| Total net deferred tax asset | 203,875,000 | 364,826,000 | 203,875,000 | 364,826,000 | |||||||
| Income Taxes Textuals [Abstract] | |||||||||||
| Interest expense (benefit) recognized on income tax assessments or income tax refunds | (100,000) | 100,000 | 2,200,000 | ||||||||
| Total interest accrued on the unrecognized tax benefits | 2,200,000 | 2,300,000 | 2,200,000 | 2,300,000 | |||||||
| Tax benefits associated with securities transactions | 1,700,000 | 1,300,000 | 1,700,000 | 1,300,000 | 100,000 | ||||||
| Net operating loss carryforward, federal | 27,000,000 | 27,000,000 | |||||||||
| Net operating loss carryfoward, state | 86,600,000 | 86,600,000 | |||||||||
| Alternative minimum tax credit carryforward | 50,100,000 | 50,100,000 | |||||||||
| General business credit carryover | 47,700,000 | 47,700,000 | |||||||||
| Capital loss carryforward | 3,000,000 | 3,000,000 | |||||||||
| Charitable contribution carryforward | $ 800,000 | $ 800,000 | |||||||||
| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) related to securities transactions. No definition available.
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- Details
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- Definition
The tax effect as of the balance sheet date of the amount of the estimated future tax effects, before any related valuation allowance, arising from unrealized losses or reversals of income on certain investments in debt and equity securities, which can only be deducted for tax purposes when the losses or reversals of income are realized No definition available.
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| X | ||||||||||
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- Definition
For entities that net deferred tax assets and tax liabilities, represents the unclassified net amount of deferred tax assets and liabilities as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets or liabilities. A temporary difference is a difference between the tax basis of an asset or liability and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods This is the net deferred tax asset or liability before valuation allowance against deferred tax assets. No definition available.
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- Definition
The tax effect as of the balance sheet date of the amount of the estimated future tax effects, before any related valuation allowance, attributable to the difference between the tax basis of acquired assets and the basis of acquired assets computed in accordance with generally accepted accounting principles. The difference in basis is attributable to different capitalization of costs or amortization methodologies, which will decrease future taxable income when such basis difference is realized. No definition available.
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| X | ||||||||||
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- Definition
The amount as of the balance sheet date of the estimated future tax effects attributable to investments in partnerships, which are either not controlled or have separate reporting requirements, due to a difference between the tax basis and the generally accepted accounting principles basis which will increase future taxable income. No definition available.
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| X | ||||||||||
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- Definition
The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of pension and employee benefit liabilities funded in advance and the basis of a prepaid pension asset and employee benefits determined in accordance with generally accepted accounting principles. The difference in basis of such costs will increase future taxable income when such basis difference reverses. No definition available.
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| X | ||||||||||
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- Definition
The tax effect as of the balance sheet date of the amount of the estimated future tax effects attributable to the difference between the tax basis of acquired assets and the basis of acquired assets computed in accordance with generally accepted accounting principles. The difference in basis is attributable to different capitalization of costs or amortization methodologies, which will increase future taxable income when such basis difference is realized. No definition available.
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- Details
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- Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to loan acquistions under enacted tax laws. No definition available.
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- Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to bank owned life insurance income that is exempt from income taxes under enacted tax laws. No definition available.
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments). No definition available.
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| X | ||||||||||
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to other deductible tax carryforwards not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible general business tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from financing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from mortgage servicing rights. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the deduction for dividends paid or received under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the disposition of assets in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the different amortization methods allowed under generally accepted accounting principles and enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to state and local income tax expense or benefit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to investment tax credits generated or utilized under enacted tax laws during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to income that is exempt from income taxes under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the United States that are not subject to U.S. federal income taxes. No definition available.
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| X | ||||||||||
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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