Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income before noncontrolling interests	$ 909,901	$ 736,417
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	89,033	74,226
Gains on investment securities, net	(106,575)	(77,365)
Distributions of earnings from non-marketable and other equity securities	77,584	54,605
Depreciation and amortization	60,408	43,389
Amortization of premiums and discounts on investment securities, net	9,646	(252)
Amortization of share-based compensation	50,550	33,968
Amortization of deferred loan fees	(112,383)	(94,771)
Deferred income tax benefit	(1,720)	(16,532)
Excess tax benefit from exercise of stock options and vesting of restricted shares	(7,931)	(17,543)
Losses from the write-off of premises and equipment	185	7,117
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(10,429)	(51,521)
Accounts receivable and payable, net	(18,278)	1,697
Income tax receivable and payable, net	(59,527)	(12,962)
Accrued compensation	(109,837)	5,505
Foreign exchange spot contracts, net	34,304	86,298
Other, net	(78,516)	(46,874)
Net cash provided by operating activities	709,744	703,904
Cash flows from investing activities:
Purchases of available-for-sale securities	(7,832,282)	(662,458)
Proceeds from sales of available-for-sale securities	2,189,087	0
Proceeds from maturities and paydowns of available-for-sale securities	801,605	2,529,666
Purchases of held-to-maturity securities	(408,479)	(4,726,595)
Proceeds from maturities and paydowns of held-to-maturity securities	1,516,340	1,482,204
Purchases of non-marketable and other equity securities	(100,068)	(56,435)
Proceeds from sales and distributions of capital of non-marketable and other securities	90,371	83,020
Net increase in loans	(2,685,151)	(4,356,980)
Purchases of premises and equipment	(33,871)	(28,718)
Acquisition of SVB Leerink, net of cash acquired	(102,328)	0
Net cash used for investing activities	(6,564,776)	(5,736,296)
Cash flows from financing activities:
Net increase in deposits	10,213,974	4,342,036
Net (decrease) increase in short-term borrowings	(612,514)	1,597,522
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(32,002)	(22,785)
Common stock repurchases	(352,511)	0
Proceeds from issuance of common stock, ESPP and ESOP	12,742	11,685
Net cash provided by financing activities	9,229,689	5,928,458
Net increase in cash and cash equivalents	3,374,657	896,066
Cash and cash equivalents at beginning of period	3,571,539	2,923,075
Cash and cash equivalents at end of period	6,946,196	3,819,141
Cash paid during the period for:
Interest	164,503	54,681
Income taxes	379,579	277,388
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax	173,235	(70,763)
Distributions of stock from investments	7,770	4,368
Equity warrant assets
Changes in fair values of derivatives, net	12,801	(24,462)
Derivative
Changes in fair values of derivatives, net	$ (29,472)	$ 2,964