Annual report pursuant to Section 13 and 15(d)

Variable Interest Entities (Early adoption) (Details 2)

v2.4.1.9
Variable Interest Entities (Early adoption) (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Consolidated Balance Sheets [Abstract]                      
Other Assets $ 1,807,208us-gaap_OtherAssets       $ 1,609,876us-gaap_OtherAssets       $ 1,807,208us-gaap_OtherAssets $ 1,609,876us-gaap_OtherAssets  
Retained (deficit) earnings (1,052,324)us-gaap_RetainedEarningsAccumulatedDeficit       (1,479,324)us-gaap_RetainedEarningsAccumulatedDeficit       (1,052,324)us-gaap_RetainedEarningsAccumulatedDeficit (1,479,324)us-gaap_RetainedEarningsAccumulatedDeficit  
Consolidated Statements of Income [Abstract]                      
Noninterest Income 233,278us-gaap_NoninterestIncome 247,349us-gaap_NoninterestIncome 250,067us-gaap_NoninterestIncome 248,485us-gaap_NoninterestIncome 249,892us-gaap_NoninterestIncome 253,767us-gaap_NoninterestIncome 251,919us-gaap_NoninterestIncome 256,618us-gaap_NoninterestIncome 979,179us-gaap_NoninterestIncome 1,012,196us-gaap_NoninterestIncome 1,106,321us-gaap_NoninterestIncome
Income Tax Expense (Benefit) 57,151us-gaap_IncomeTaxExpenseBenefit 53,870us-gaap_IncomeTaxExpenseBenefit 57,475us-gaap_IncomeTaxExpenseBenefit 52,097us-gaap_IncomeTaxExpenseBenefit 52,029us-gaap_IncomeTaxExpenseBenefit 65,047us-gaap_IncomeTaxExpenseBenefit 55,269us-gaap_IncomeTaxExpenseBenefit 55,129us-gaap_IncomeTaxExpenseBenefit 220,593us-gaap_IncomeTaxExpenseBenefit 227,474us-gaap_IncomeTaxExpenseBenefit 202,291us-gaap_IncomeTaxExpenseBenefit
Net Income (Loss) Attributable to Parent $ 163,614us-gaap_NetIncomeLoss $ 155,016us-gaap_NetIncomeLoss $ 164,619us-gaap_NetIncomeLoss $ 149,143us-gaap_NetIncomeLoss $ 158,172us-gaap_NetIncomeLoss $ 178,836us-gaap_NetIncomeLoss $ 151,000us-gaap_NetIncomeLoss $ 153,274us-gaap_NetIncomeLoss $ 632,392us-gaap_NetIncomeLoss $ 641,282us-gaap_NetIncomeLoss $ 631,290us-gaap_NetIncomeLoss