Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks	$ 758,238	$ 841,942
Money market investments:
Interest-bearing deposits	7,661,311	7,178,097
Federal funds sold and security resell agreements	1,404,246	1,386,291
Investment securities:
Held-to-maturity, at adjusted cost (approximate fair value $578,327 and $677,196)	570,869	647,252
Available-for-sale, at fair value	4,652,415	3,844,248
Trading account, at fair value	74,519	70,601
Marketable securities, total	5,297,803	4,562,101
Loans held for sale	152,448	132,504
Loans and leases, net of unearned income and fees:
Loans and leases receivable, net of unearned income and fees	40,023,984	40,063,658
Less allowance for loan losses	609,375	604,663
Loans, net of allowance	39,414,609	39,458,995
Other noninterest-bearing investments	863,443	865,950
Premises and equipment, net	856,577	829,809
Goodwill	1,014,129	1,014,129
Core deposit and other intangibles	20,843	25,520
Other real estate owned	13,269	18,916
Other assets	908,543	894,620
Total assets	58,365,459	57,208,874
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand	21,557,584	20,529,124
Interest-bearing:
Savings and money market	24,744,288	24,583,636
Time	2,263,146	2,406,924
Foreign	372,106	328,391
Total deposits	48,937,124	47,848,075
Federal funds and other short-term borrowings	227,124	244,223
Long-term debt	1,050,938	1,092,282
Reserve for unfunded lending commitments	79,961	81,076
Other liabilities	540,137	573,688
Total liabilities	50,835,284	49,839,344
Shareholders' equity:
Preferred stock, without par value, authorized 4,400,000 shares	1,004,032	1,004,011
Common stock, without par value; authorized 350,000,000 shares; issued and outstanding 203,740,914 and 203,014,903 shares	4,738,272	4,723,855
Retained earnings	1,823,043	1,769,705
Accumulated other comprehensive income (loss)	(35,172)	(128,041)
Total shareholders' equity	7,530,175	7,369,530
Total liabilities and shareholders' equity	$ 58,365,459	$ 57,208,874