Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 164,024	$ 187,032
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	39,498	29,858
Accretion of discount and amortization of premiums, net	(4,414)	(2,680)
Stock compensation costs	7,444	6,158
Deferred income tax (benefit) expense	(406)	677
Provision for credit losses	22,579	20,218
Net gains on sales of loans	(915)	(1,582)
Net gains on sales of available-for-sale investment securities	(1,561)	(2,129)
Net gains on sales of fixed assets	0	(1,086)
Net gain on sale of business	0	(31,470)
Loans held-for-sale:
Originations and purchases	(2,167)	(4,617)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	2,454	2,545
Proceeds from distributions received from equity method investees	1,150	887
Net change in accrued interest receivable and other assets	(27,639)	14,465
Net change in accrued expenses and other liabilities	(60,806)	(570)
Other net operating activities	0	148
Total adjustments	(24,783)	30,822
Net cash provided by operating activities	139,241	217,854
Net (increase) decrease in:
Investments in qualified affordable housing partnerships, tax credit and other investments	(33,261)	(22,799)
Interest-bearing deposits with banks	245,375	(71,203)
Available-for-sale investment securities:
Proceeds from sales	151,339	214,790
Proceeds from repayments, maturities and redemptions	55,712	87,677
Purchases	(69,805)	(157,933)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	92,887	112,964
Purchases	(147,938)	(80,077)
Other changes in loans held-for-investment, net	(409,930)	(619,671)
Premises and equipment:
Purchases	(3,336)	(1,757)
Payment on sale of business, net of cash transferred	0	(503,687)
Proceeds from sales of other real estate owned (“OREO”)	0	2,716
Proceeds from distributions received from equity method investees	1,005	629
Other net investing activities	(729)	(1,967)
Net cash used in investing activities	(118,681)	(1,040,318)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	800,053	964,380
Net (decrease) increase in short-term borrowings	(19,514)	30,215
Proceeds	300,000	0
Repayment	(282,000)	0
Repayment of long-term debt and finance lease liabilities	(217)	(5,000)
Common stock:
Stocks tendered for payment of withholding taxes	(14,036)	(14,946)
Cash dividends paid	(34,916)	(30,235)
Net cash provided by financing activities	749,370	944,414
Effect of exchange rate changes on cash and cash equivalents	14,018	18,396
NET INCREASE IN CASH AND CASH EQUIVALENTS	783,948	140,346
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	3,001,377	2,174,592
CASH AND CASH EQUIVALENTS, END OF PERIOD	3,785,325	2,314,938
Cash paid during the period for:
Interest	97,930	43,218
Income taxes, net	303	10,084
Noncash investing and financing activities:
Loans transferred from held-for-investment to held-for-sale	$ 92,228	$ 155,767