CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 320,943	$ 292,872
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	98,561	52,810
Accretion of discount and amortization of premiums, net	(37,881)	(47,890)
Changes in FDIC indemnification asset and receivable/payable	0	18,973
Stock compensation costs	13,973	11,702
Deferred tax expenses	3,730	118,079
Tax benefit from stock compensation plans, net	(1,019)	(3,227)
Provision for credit losses	17,018	16,217
Net gains on sales of loans	(6,967)	(19,719)
Net gains on sales of available-for-sale investment securities	(8,468)	(26,994)
Net gains on sales of premises and equipment and OREO	(3,300)	(13,350)
Originations and purchases of loans held-for-sale	(10,901)	(623)
Proceeds from sales and paydowns/payoffs in loans held-for-sale	15,065	2,232
Repurchase agreements’ extinguishment costs	0	21,818
Net payments to FDIC shared-loss agreements	0	(12,038)
Net change in accrued interest receivable and other assets	(1,570)	(28,957)
Net change in accrued expenses and other liabilities	19,217	39,157
Other net operating activities	(797)	525
Total adjustments	96,661	128,715
Net cash provided by operating activities	417,604	421,587
Net (increase) decrease in:
Loans held-for-investment	(317,142)	(1,873,612)
Short-term investments	(13,469)	75,940
Investments in qualified affordable housing partnerships, tax credit and other investments	(57,742)	(48,204)
Purchases of:
Resale agreements	(1,150,000)	(1,645,000)
Available-for-sale investment securities	(1,330,724)	(2,190,503)
Loans held-for-investment (including loan participations)	(1,497,218)	(572,558)
Proceeds from sales of:
Available-for-sale investment securities	1,008,256	1,328,487
Loans held-for-investment (including loan participations)	545,256	1,271,128
OREO	3,271	33,921
Paydowns and maturities of resale agreements	1,450,000	1,370,000
Repayments, maturities and redemptions of available-for-sale investment securities	870,965	558,669
Other net investing activities	15,278	14,736
Net cash used in investing activities	(473,269)	(1,676,996)
Net increase in:
Deposits	1,130,022	2,765,985
Short-term borrowings	37,699	3,271
Proceeds from:
Issuance of common stock pursuant to various stock compensation plans and agreements	1,962	1,769
Payments for:
Repayment of FHLB advances	(700,000)	0
Repayment of long-term debt	(15,000)	(15,000)
Extinguishment of repurchase agreements	0	(566,818)
Repurchase of vested shares due to employee tax liability	(3,144)	(5,859)
Cash dividends	(86,984)	(86,850)
Tax benefit from stock compensation plans, net	1,019	3,227
Net cash provided by financing activities	365,574	2,099,725
Effect of exchange rate changes on cash and cash equivalents	(3,964)	(8,498)
NET INCREASE IN CASH AND CASH EQUIVALENTS	305,945	835,818
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,360,887	1,039,885
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,666,832	1,875,703
Cash paid (received) during the period for:
Interest	76,750	81,739
Income tax payments/(refunds), net	20,652	(20,367)
Noncash investing and financing activities:
Loans held-for-investment transferred to loans held-for-sale, net	720,670	1,556,456
Transfers to OREO	6,086	8,059
Loans to facilitate sale of OREO	0	1,750
Held-to-maturity investment security retained from securitization of loans	160,135	0
Dividends payable	$ 432	$ 250