Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks	$ 602,694	$ 841,942
Money market investments:
Interest-bearing deposits	6,558,678	7,178,097
Federal funds sold and security resell agreements	1,325,501	1,386,291
Investment securities:
Held-to-maturity, at adjusted cost (approximate fair value $553,088 and $677,196)	544,168	647,252
Available-for-sale, at fair value	6,000,011	3,844,248
Trading account, at fair value	73,521	70,601
Marketable securities, total	6,617,700	4,562,101
Loans held for sale	139,122	132,504
Loans and leases, net of unearned income and fees:
Loans and leases receivable, net of unearned income and fees	40,113,123	40,063,658
Less allowance for loan losses	596,440	604,663
Loans, net of allowance	39,516,683	39,458,995
Other noninterest-bearing investments	851,225	865,950
Premises and equipment, net	873,800	829,809
Goodwill	1,014,129	1,014,129
Core deposit and other intangibles	18,546	25,520
Other real estate owned	12,799	18,916
Other assets	880,050	894,620
Total assets	58,410,927	57,208,874
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand	21,572,022	20,529,124
Interest-bearing:
Savings and money market	24,690,359	24,583,636
Time	2,216,206	2,406,924
Foreign	441,560	328,391
Total deposits	48,920,147	47,848,075
Federal funds and other short-term borrowings	272,391	244,223
Long-term debt	944,752	1,092,282
Reserve for unfunded lending commitments	81,389	81,076
Other liabilities	554,153	573,688
Total liabilities	50,772,832	49,839,344
Shareholders' equity:
Preferred stock, without par value, authorized 4,400,000 shares	1,004,159	1,004,011
Common stock, without par value; authorized 350,000,000 shares; issued and outstanding 204,278,594 and 203,014,903 shares	4,756,288	4,723,855
Retained earnings	1,894,623	1,769,705
Accumulated other comprehensive income (loss)	(16,975)	(128,041)
Total shareholders' equity	7,638,095	7,369,530
Total liabilities and shareholders' equity	$ 58,410,927	$ 57,208,874