Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 360,728	$ 454,958
Interest-bearing deposits in other financial institutions	344,148	154,562
Federal funds sold and securities purchased under agreements to resell	7,100	7,075
Investment securities available for sale, at fair value	4,669,100	4,937,483
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost	177,808	191,188
Loans held for sale	196,570	249,195
Loans	14,253,725	14,031,071
Allowance for loan losses	(356,298)	(378,151)
Loans, net	13,897,427	13,652,920
Premises and equipment, net	225,164	223,736
Goodwill	929,168	929,168
Other intangible assets, net	68,374	67,574
Other assets	1,038,083	1,056,358
Total assets	21,913,670	21,924,217
LIABILITIES AND STOCKHOLDERS' EQUITY
Noninterest-bearing demand deposits	3,989,156	3,928,792
Interest-bearing deposits, excluding brokered certificates of deposit	11,617,727	10,958,915
Brokered certificates of deposit	46,493	202,948
Total deposits	15,653,376	15,090,655
Short-term funding	1,936,219	2,514,485
Long-term funding	1,176,736	1,177,071
Accrued expenses and other liabilities	246,466	276,212
Total liabilities	19,012,797	19,058,423
Stockholders' equity
Preferred equity	63,272	63,272
Common stock	1,750	1,746
Surplus	1,590,336	1,586,401
Retained earnings	1,181,247	1,148,773
Accumulated other comprehensive income	65,278	65,602
Treasury stock, at cost	(1,010)	0
Total stockholders' equity	2,900,873	2,865,794
Total liabilities and stockholders' equity	$ 21,913,670	$ 21,924,217
Preferred shares issued	65,000	65,000
Preferred shares authorized (par value $1.00 per share)	750,000	750,000
Common shares issued	175,012,686	174,591,841
Common shares authorized (par value $0.01 per share)	250,000,000	250,000,000