Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and due from banks	$ 1,183,097	$ 1,841,907
Money market investments:
Interest-bearing deposits	8,180,010	5,978,978
Federal funds sold and security resell agreements	221,799	2,775,354
Investment securities:
Held-to-maturity, at adjusted cost (approximate fair value $734,292 and $674,741)	783,371	756,909
Available-for-sale, at fair value	3,193,395	3,091,310
Trading account, at fair value	26,385	28,290
Marketable securities, total	4,003,151	3,876,509
Loans held for sale	164,619	251,651
Loans, net of unearned income and fees:
Loans and Leases Receivable, Net of Deferred Income	37,756,010	37,137,006
FDIC-supported loans	431,935	528,241
Loans and leases receivable, net of deferred income, covered and not covered	38,187,945	37,665,247
Less allowance for loan losses	813,912	896,087
Loans and Leases Receivable, Net Reported Amount, Covered and Not Covered	37,374,033	36,769,160
Other noninterest-bearing investments	852,939	855,462
Premises and equipment, net	717,299	708,882
Goodwill	1,014,129	1,014,129
Core deposit and other intangibles	43,239	50,818
Other real estate owned	80,789	98,151
Other assets	1,069,436	1,290,917
Total assets	54,904,540	55,511,918
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand	17,803,950	18,469,458
Interest-bearing:
Savings and money market	22,887,404	22,896,624
Time	2,810,431	2,962,931
Foreign	1,514,270	1,804,060
Total deposits	45,016,055	46,133,073
Securities sold, not yet purchased	15,799	26,735
Federal funds purchased and security repurchase agreements	240,816	320,478
Other short-term borrowings	0	5,409
Long-term debt	2,173,176	2,337,113
Reserve for unfunded lending commitments	104,082	106,809
Other liabilities	494,280	533,660
Total liabilities	48,044,208	49,463,277
Shareholders' equity:
Preferred stock, without par value, authorized 4,400,000 shares	1,728,659	1,128,302
Common stock, without par value; authorized 350,000,000 shares; issued and outstanding 184,436,656 and 184,199,198 shares	4,167,828	4,166,109
Retained earnings	1,338,401	1,203,815
Accumulated other comprehensive income (loss)	(374,556)	(446,157)
Controlling interest shareholders' equity	6,860,332	6,052,069
Noncontrolling interests	0	(3,428)
Total shareholders' equity	6,860,332	6,048,641
Total liabilities and shareholders' equity	$ 54,904,540	$ 55,511,918