Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income before noncontrolling interests	$ 133,649	$ 291,612
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	243,480	28,551
Gains on investment securities, net	(46,055)	(29,028)
Distributions of earnings from non-marketable and other equity securities	12,346	15,619
Depreciation and amortization	24,824	20,830
Amortization of premiums and discounts on investment securities, net	13,565	1,606
Amortization of share-based compensation	19,171	15,122
Amortization of deferred loan fees	(33,016)	(35,276)
Deferred income tax benefit	(60,126)	(8,834)
Excess tax benefit from exercise of stock options and vesting of restricted shares	(2,575)	(2,804)
Losses from the write-off of premises and equipment	0	52
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	23,982	(3,361)
Accounts receivable and payable, net	(45,311)	30,447
Income tax receivable and payable, net	66,581	94,552
Accrued compensation	(236,834)	(253,769)
Foreign exchange spot contracts, net	(12,583)	169,079
Proceeds from termination of interest rate swaps	180,500	0
Other, net	(69,013)	19,668
Net cash provided by operating activities	168,125	340,750
Cash flows from investing activities:
Purchases of available-for-sale securities	(1,538,553)	(204,328)
Proceeds from sales of available-for-sale securities	2,654,212	1,171,564
Proceeds from maturities and paydowns of available-for-sale securities	785,692	116,001
Purchases of held-to-maturity securities	(358,650)	0
Proceeds from maturities and paydowns of held-to-maturity securities	646,212	428,433
Purchases of non-marketable and other equity securities	(12,177)	(16,165)
Proceeds from sales and distributions of capital of non-marketable and other securities	45,720	19,979
Net increase in loans	(2,796,409)	(505,516)
Purchases of premises and equipment	(25,088)	(5,504)
Acquisition of SVB Leerink, net of cash acquired	0	(100,037)
Net (cash used) provided by for investing activities	(599,041)	904,427
Cash flows from financing activities:
Net increase in deposits	154,150	2,998,297
Net increase (decrease) in short-term borrowings	3,120,732	(616,957)
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(328)	(15,720)
Payment of preferred stock dividend	(3,369)	0
Common stock repurchases	(60,020)	(116,023)
Proceeds from issuance of common stock, ESPP and ESOP, net of restricted stock awards	(584)	570
Net cash provided by financing activities	3,210,581	2,250,167
Net increase in cash and cash equivalents	2,779,665	3,495,344
Cash and cash equivalents at beginning of period	6,781,783	3,571,539
Cash and cash equivalents at end of period	9,561,448	7,066,883
Cash paid during the period for:
Interest	46,145	46,548
Income taxes	31,988	17,570
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax	348,923	36,411
Distributions of stock from investments	3,119	1,276
Equity warrant assets
Changes in fair values of derivatives, net	18,574	(10,248)
Derivative
Changes in fair values of derivatives, net	$ (63,034)	$ (3,068)