Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 1,060,918	$ 1,224,350
Money market investments:
Interest-bearing deposits	5,519,463	7,020,895
Federal funds sold and security resell agreements	1,960,294	102,159
Investment securities:
Held-to-maturity, at adjusted cost (approximate fair value $655,768 and $729,974)	740,738	807,804
Available-for-sale, at fair value	3,127,192	3,230,795
Trading account, at fair value	13,963	40,273
Marketable securities, total	3,881,893	4,078,872
Loans held for sale	220,240	201,590
Loans, net of unearned income and fees:
Loans and leases	36,582,253	36,393,782
FDIC-supported loans	588,566	750,870
Total loans, net of unearned	37,170,819	37,144,652
Less allowance for loan losses	925,341	1,049,958
Loans, net of allowance	36,245,478	36,094,694
Other noninterest-bearing investments	874,903	865,231
Premises and equipment, net	709,188	719,276
Goodwill	1,015,129	1,015,129
Core deposit and other intangibles	55,034	67,830
Other real estate owned	118,190	153,178
Other assets	1,426,271	1,605,905
Total assets	53,087,001	53,149,109
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand	17,295,911	16,110,857
Interest-bearing:
Savings and NOW	7,685,192	7,159,101
Money market	14,284,870	14,616,740
Time	3,107,815	3,413,550
Foreign	1,398,749	1,575,361
Total deposits	43,772,537	42,875,609
Securities sold, not yet purchased	21,708	44,486
Federal funds purchased and security repurchase agreements	451,214	608,098
Other short-term borrowings	6,608	70,273
Long-term debt	2,326,659	1,954,462
Reserve for unfunded lending commitments	105,850	102,422
Other liabilities	484,170	510,531
Total liabilities	47,168,746	46,165,881
Shareholders' equity:
Preferred stock, without par value, authorized 4,400,000 shares	1,123,377	2,377,560
Common stock, without par value; authorized 350,000,000 shares; issued and outstanding 184,156,402 and 184,135,388 shares	4,162,001	4,163,242
Retained earnings	1,170,477	1,036,590
Accumulated other comprehensive income (loss)	(534,738)	(592,084)
Controlling interest shareholders' equity	5,921,117	6,985,308
Noncontrolling interests	(2,862)	(2,080)
Total shareholders' equity	5,918,255	6,983,228
Total liabilities and shareholders' equity	$ 53,087,001	$ 53,149,109