Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
OPERATING ACTIVITIES:
Net income	$ 196,576		$ 159,650
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	39,372		78,353
Provision for depreciation and amortization	35,281		36,891
Amortization of investment security premiums, net	9,406		16,835
Investment securities (gains) losses, net(A)	(5,870)	[1]	2,989	[1]
Net gains on sales of loans held for sale	(1,554)		(6,656)
Originations of loans held for sale	(41,231)		(316,641)
Proceeds from sales of loans held for sale	67,065		420,391
Net increase in trading securities	(2,941)		(15,901)
Stock-based compensation	3,614		4,669
(Increase) decrease in interest receivable	(1,077)		1,654
Decrease in interest payable	(4,393)		(6,632)
Increase (decrease) in income taxes payable	14,863		(3,514)
Net tax benefit related to equity compensation plans	(1,025)		(1,174)
Other changes, net	3,011		34,954
Net cash provided by operating activities	311,097		405,868
INVESTING ACTIVITIES:
Proceeds from sales of investment securities(A)	11,699	[1]	77,678	[1]
Proceeds from maturities/pay downs of investment securities(A)	1,968,848	[1]	1,650,002	[1]
Purchases of investment securities(A)	(2,926,445)	[1]	(2,270,478)	[1]
Net decrease in loans	288,987	[1]	363,764	[1]
Long-term securities purchased under agreements to resell	(500,000)		(350,000)
Repayments of long-term securities purchased under agreements to resell	100,000
Purchases of land, buildings and equipment	(16,135)		(13,161)
Sales of land, buildings and equipment	2,288		394
Net cash used in investing activities	(1,070,758)		(541,801)
FINANCING ACTIVITIES:
Net increase in non-interest bearing, savings, interest checking and money market deposits	1,090,342		403,068
Net decrease in time open and C.D.'s	(150,511)		(287,178)
Long-term securities sold under agreements to repurchase			400,000
Repayment of long-term securities sold under agreements to repurchase			(500,000)
Net increase in short-term federal funds purchased and securities sold under agreements to repurchase	74,901		527,364
Repayment of long-term borrowings	(404)		(398,200)
Net increase in short-term borrowings			1
Purchases of treasury stock	(101,111)		(1,047)
Issuance of stock under stock purchase and equity compensation plans	14,060		6,665
Net tax benefit related to equity compensation plans	1,025		1,174
Cash dividends paid on common stock	(59,636)		(58,836)
Net cash provided by financing activities	868,666		93,011
Increase (decrease) in cash and cash equivalents	109,005		(42,922)
Cash and cash equivalents at beginning of year	460,675		463,834
Cash and cash equivalents at September 30	569,680		420,912
(A) Available for sale and non-marketable securities
Income tax net payments	76,795		75,138
Interest paid on deposits and borrowings	44,828		73,419
Loans transferred to foreclosed real estate	$ 20,630		$ 11,140

[1] Available for sale and non-marketable securities