Consolidated Balance Sheet (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Cash and due from banks	$ 1,421,831	$ 1,449,547
Interest-bearing deposits at banks	1,069,717	154,960
Federal funds sold	1,000	2,850
Trading account	544,938	561,834
Investment securities (includes pledged securities that can be sold or repledged of $x,xxx,xxx at June 30, 2012; $1,826,011 at December 31, 2011)
Available for sale (cost: $5,510,097 at June 30, 2012; $6,312,423 at December 31, 2011)	5,534,054	6,228,560
Held to maturity (fair value: $1,131,836 at June 30, 2012; $1,012,562 at December 31, 2011)	1,188,465	1,077,708
Other (fair value: $334,781 at June 30, 2012; $366,886 at December 31, 2011)	334,781	366,886
Total investment securities	7,057,300	7,673,154
Loans and leases	63,095,796	60,377,875
Unearned discount	(244,524)	(281,870)
Loans and leases, net of unearned discount	62,851,272	60,096,005
Allowance for credit losses	(917,028)	(908,290)
Loans and leases, net	61,934,244	59,187,715
Premises and equipment	592,498	581,435
Goodwill	3,524,625	3,524,625
Core deposit and other intangible assets	143,713	176,394
Accrued interest and other assets	4,517,712	4,611,773
Total assets	80,807,578	77,924,287
Liabilities
Noninterest-bearing deposits	22,854,794	20,017,883
NOW accounts	1,705,198	1,912,226
Savings deposits	32,292,412	31,001,083
Time deposits	5,330,239	6,107,530
Deposits at Cayman Islands office	366,164	355,927
Total deposits	62,548,807	59,394,649
Federal funds purchased and agreements to repurchase securities	975,575	732,059
Other short-term borrowings	0	50,023
Accrued interest and other liabilities	1,965,421	1,790,121
Long-term borrowings	5,687,868	6,686,226
Total liabilities	71,177,671	68,653,078
Shareholders' equity
Preferred stock, $1.00 par, 1,000,000 shares authorized; Issued and outstanding: Liquidation preference of $1,000 per share: 381,500 shares at June 30, 2012 and December 31, 2011;Liquidation preference of $10,000 per share: 50,000 shares at June 30, 2012 and December 31, 2011	868,433	864,585
Common stock, $.50 par, 250,000,000 shares authorized, 126,587,931 shares issued at June 30, 2012;125,683,398 shares issued at December 31, 2011	63,294	62,842
Common stock issuable, 57,231 shares at June 30, 2012; 68,220 shares at December 31, 2011	3,429	4,072
Additional paid-in capital	2,874,516	2,828,986
Retained earnings	6,098,084	5,867,165
Accumulated other comprehensive income (loss), net	(277,849)	(356,441)
Total shareholders' equity	9,629,907	9,271,209
Total liabilities and shareholders' equity	$ 80,807,578	$ 77,924,287