Quarterly report pursuant to Section 13 or 15(d)

Other Comprehensive Income (Activity/Rollforward) (Details)

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Other Comprehensive Income (Activity/Rollforward) (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Pretax        
Total other comprehensive income (loss), pretax $ (34,285,000) $ 81,712,000 $ 49,903,000 $ (123,209,000)
Tax (Expense) Benefit        
Total other comprehensive income (loss), tax (expense) benefit 11,996,000 (28,743,000) (17,910,000) 43,259,000
After-tax        
Transisition obligation 2,126,000 1,934,000 7,724,000 9,742,000
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale (8,918,000) 4,594,000 21,483,000 (77,449,000)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships, after tax (21,229,000) 15,332,000 (4,100,000) (54,048,000)
Change in pension and post-retirement benefit plan assets and liabilities, after-tax 5,732,000 31,109,000 6,886,000 41,805,000
Total other comprehensive income (loss) (22,289,000) 52,969,000 31,993,000 (79,950,000)
Activity in accumulated other comprehensive income, net of tax        
Beginning Balance     (214,009,000) (150,817,000)
Period change     31,993,000 (79,950,000)
OCI before reclassifications     37,627,000 (65,302,000)
Amounts reclassified from accumulated OCI     (5,634,000) (14,648,000)
Ending Balance (182,016,000) (230,767,000) (182,016,000) (230,767,000)
Unrealized gains and losses on debt securities [Member]
       
Pretax        
Non-credit-related impairment losses (recoveries) on debt (equity) securities not expected to be sold, before-tax 3,289,000 2,975,000 11,949,000 14,987,000
Unrealized holding gains (losses) on debt (equity) securities available for sale arising during the period, pretax (14,000,000) 4,388,000 48,682,000 (123,647,000)
Less: Reclassification adjustment for net losses (gains) losses included in net income, pretax 250,000 3,023,000 (15,409,000) 4,254,000
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale, pretax (10,461,000) 10,386,000 45,222,000 (104,406,000)
Tax (Expense) Benefit        
Non-credit-related impairment losses (recoveries) on debt (equity) securities not expected to be sold, tax (expense) benefit (1,163,000) (1,041,000) (4,225,000) (5,245,000)
Unrealized holding gains (losses) on debt (equity) securities available for sale arising during the period, tax (expense) benefit 4,908,000 (1,683,000) (17,439,000) 43,413,000
Less: Reclassification adjustment for net losses (gains) losses included in net income, tax (expense) benefit (88,000) (1,058,000) 5,393,000 (1,489,000)
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale, tax (expense) benefit 3,657,000 (3,782,000) 16,271,000 (36,679,000)
After-tax        
Transisition obligation 2,126,000 1,934,000 7,724,000 9,742,000
Unrealized holding gains (losses) on debt (equity) securities available for sale arising during the period, after-tax (9,092,000) 2,705,000 31,243,000 (80,234,000)
Less: Reclassification adjustment for net losses (gains) losses included in net income, after-tax 162,000 1,965,000 (10,016,000) 2,765,000
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale (6,804,000) 6,604,000 28,951,000 (67,727,000)
Activity in accumulated other comprehensive income, net of tax        
Beginning Balance     (39,234,000) 38,304,000
Period change     28,951,000 (67,727,000)
OCI before reclassifications     38,967,000  
Amounts reclassified from accumulated OCI     (10,016,000) 2,765,000
Ending Balance (10,283,000) (29,423,000) (10,283,000) (29,423,000)
Unrealized gains and losses on equity securities [Member]
       
Pretax        
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale, pretax 18,000 (121,000) 394,000 32,000
Tax (Expense) Benefit        
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale, tax (expense) benefit (6,000) 45,000 138,000 12,000
After-tax        
Net change in unrealized holding gains (losses) on debt (equity) securities available for sale 12,000 (76,000) 256,000 20,000
Activity in accumulated other comprehensive income, net of tax        
Beginning Balance     292,000 194,000
Period change     256,000 20,000
OCI before reclassifications     256,000 20,000
Amounts reclassified from accumulated OCI     0 0
Ending Balance 548,000 214,000 548,000 214,000
Unrealized gains and losses on cash flow hedging derivatives [Member]
       
Pretax        
Unrealized gains and losses on derivatives used in cash flow hedging relationships arising during the period, pretax (32,512,000) 26,672,000 (2,454,000) (71,579,000)
Less: Reclassification adjustment for net losses (gains) losses included in net income, pretax (148,000) (3,085,000) (3,853,000) (11,571,000)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships, pretax (32,660,000) 23,587,000 (6,307,000) (83,150,000)
Tax (Expense) Benefit        
Unrealized gains and losses on derivatives used in cash flow hedging relationships arising during the period, tax (expense) benefit 11,379,000 (9,335,000) 858,000 25,053,000
Less: Reclassification adjustment for net losses (gains) losses included in net income, tax (expense) benefit 52,000 1,080,000 1,349,000 4,049,000
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships 11,431,000 (8,255,000) 2,207,000 29,102,000
After-tax        
Unrealized gains and losses on derivatives used in cash flow hedging relationships arising during the period, after-tax (21,133,000) 17,337,000 (1,596,000) (46,526,000)
Less: Reclassification adjustment for net losses (gains) losses included in net income, after-tax (96,000) (2,005,000) (2,504,000) (7,522,000)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships, after tax (21,229,000) 15,332,000 (4,100,000) (54,048,000)
Activity in accumulated other comprehensive income, net of tax        
Beginning Balance     (18,844,000) 47,084,000
Period change     (4,100,000) (54,048,000)
OCI before reclassifications     (1,596,000) (46,526,000)
Amounts reclassified from accumulated OCI     (2,504,000) (7,522,000)
Ending Balance (22,944,000) (6,964,000) (22,944,000) (6,964,000)
Accumulated Unrealized Losses for Pension and Other Post-retirement obligations [Member]
       
Pretax        
Re-measurement obligation, pre-tax 0   0  
Defined benefit pension items, pre-tax 0   0  
Amortization of net actuarial loss and prior service cost included in income, pretax   47,860,000    
Curtailment 0 32,864,000    
Change in pension and post-retirement benefit plan assets and liabilities, pretax 8,818,000   10,594,000  
Tax (Expense) Benefit        
Re-measurement obligation, tax (expense) benefit 0   0  
Defined benefit pension items, tax (expense) benefit 0   0  
Amortization of net actuarial loss and prior service cost included in income, tax (expense) benefit   (16,751,000)    
Change in pension and post-retirement benefit plan assets and liabilities, tax (expense) benefit (3,086,000)   (3,708,000)  
After-tax        
Re-measurement obligation, after tax 0   0  
Amortization of net actuarial loss and prior service cost included in income, net of tax   31,109,000    
Defined benefit pension items, after tax 0   0  
Change in pension and post-retirement benefit plan assets and liabilities, after-tax 5,732,000   6,886,000  
Activity in accumulated other comprehensive income, net of tax        
Beginning Balance     (156,223,000) (236,399,000)
Period change     6,886,000 41,805,000
OCI before reclassifications     0 51,696,000
Amounts reclassified from accumulated OCI     6,886,000 (9,891,000)
Ending Balance (149,337,000) (194,594,000) (149,337,000) (194,594,000)
Debt Securities [Member] | Unrealized gains and losses on debt securities [Member]
       
Activity in accumulated other comprehensive income, net of tax        
OCI before reclassifications       $ (70,492,000)