Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Assets:
Cash and due from banks	$ 223,616		$ 252,283
Interest-bearing deposits	23,674		98,205
Securities available for sale, at fair value	3,106,931		3,136,160
Securities held-to-maturity (fair value of $3,370,912 and $3,264,718)	3,358,721		3,107,529
Federal Home Loan Bank and Federal Reserve Bank stock	158,878		155,630
Loans held for sale	20,802		107,633
Loans and leases	12,699,776	[1]	12,028,696	[1]
Allowance for loan and lease losses	(152,573)		(177,129)
Loans and leases, net	12,547,203		11,851,567
Deferred tax asset, net	65,109		68,681
Premises and equipment, net	121,605		134,562
Goodwill	529,887		529,887
Other intangible assets, net	5,351		10,270
Cash surrender value of life insurance policies	430,535		418,293
Prepaid FDIC premiums	0		16,323
Accrued interest receivable and other assets	260,687		259,742
Total assets	20,852,999		20,146,765
Liabilities and shareholders' equity:
Non-interest-bearing	3,128,152		2,881,131
Interest-bearing	11,726,268		11,649,704
Total deposits	14,854,420		14,530,835
Securities sold under agreements to repurchase and other borrowings	1,331,662		1,076,160
Federal Home Loan Bank advances	2,052,421		1,827,612
Long-term debt	228,365		334,276
Accrued expenses and other liabilities	176,943		284,352
Total liabilities	18,643,811		18,053,235
Shareholders’ equity:
Common stock, $.01 par value; Authorized - 200,000,000 shares Issued - 93,366,673 and 90,735,596 shares	934		907
Paid-in capital	1,125,584		1,145,620
Retained earnings	1,080,488		1,000,427
Less: Treasury stock, at cost (3,407,256 and 5,772,006 shares)	(100,918)		(172,807)
Accumulated other comprehensive loss	(48,549)		(32,266)
Total shareholders' equity	2,209,188		2,093,530
Total liabilities and shareholders' equity	20,852,999		20,146,765
Series A Preferred Stock [Member]
Shareholders’ equity:
Preferred stock, $.01 par value; Authorized - 3,000,000 shares: Series A issued and outstanding - 28,939 shares and Series E issued and outstanding - 5,060 shares	28,939		28,939
Series E Preferred Stock [Member]
Shareholders’ equity:
Preferred stock, $.01 par value; Authorized - 3,000,000 shares: Series A issued and outstanding - 28,939 shares and Series E issued and outstanding - 5,060 shares	$ 122,710		$ 122,710

[1] Loans and leases include net deferred fees and unamortized premiums of $13.3 million and $12.7 million at December 31, 2013 and December 31, 2012, respectively.