Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating activities
Net income	$ 415,755	$ 189,447
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	128,768	547,574
Depreciation and amortization	213,084	209,070
Change in current and deferred income taxes	54,280	175,715
Net sales (purchases) of trading account securities	99,693	(55,020)
Originations of loans held for sale	(1,697,186)	(2,468,265)
Principal payments on and proceeds from loans held for sale	2,121,284	2,213,303
Securities (gains) losses	(197)	171
Other, net	51,233	54,121
Net cash provided by (used for) operating activities	1,386,714	866,116
Investing activities
Increase (decrease) in interest bearing deposits in banks	45,052	22,754
Proceeds from:
Maturities and calls of available-for-sale and other securities	1,596,552	2,639,403
Maturities of held-to-maturity securities	14,238	0
Sales of available-for-sale and other securities	2,804,769	3,120,777
Purchases of available-for-sale and other securities	(3,578,931)	(6,610,248)
Purchases of held-to-maturity securities	(204,188)	0
Net proceeds from sales of loans	1,493,056	685,592
Net loan and lease activity, excluding sales	(2,725,678)	(1,744,418)
Proceeds from sale of operating lease assets	50,461	17,585
Purchases of premises and equipment	(102,431)	(45,951)
Proceeds from sales of other real estate	48,901	78,073
Other, net	(59,763)	1,917
Net cash provided by (used for) investing activities	(617,962)	(1,834,516)
Financing activities
Increase (decrease) in deposits	1,358,146	563,474
Increase (decrease) in short-term borrowings	193,901	893,501
Maturity/redemption of subordinated notes	(5,000)	(83,870)
Proceeds from Federal Home Loan Bank advances	200,000	450,000
Maturity/redemption of Federal Home Loan Bank advances	(358,509)	(595,536)
Maturity/redemption of long-term debt	(714,942)	(544,250)
Repurchase of Warrant to the Treasury	(49,100)	0
Dividends paid on preferred stock	(23,110)	(75,537)
Dividends paid on common stock	(27,042)	(21,437)
Other, net	(708)	(63)
Net cash provided by (used for) financing activities	573,636	586,282
Increase (decrease) in cash and cash equivalents	1,342,388	(382,118)
Cash and cash equivalents at beginning of period	847,888	1,521,344
Cash and cash equivalents at end of period	2,190,276	1,139,226
Supplemental disclosures:
Income taxes paid (refunded)	68,366	(148,518)
Interest paid	276,915	435,272
Non-cash activities
Dividends accrued, paid in subsequent quarter	$ 40,742	$ 23,373