Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income before noncontrolling interests		$ 286,624	$ 284,811
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses		88,624	66,368
Provision for unfunded credit commitments		1,601	249
Changes in fair values of derivatives, net		(24,875)	(42,295)
Gains on investment securities, net		(41,764)	(77,006)
Depreciation and amortization		35,114	28,504
Amortization of premiums and discounts on investment securities, net		9,622	14,659
Amortization of share-based compensation		22,342	24,174
Amortization of deferred loan fees		(72,807)	(64,275)
Pre-tax net gain on SVBIF sale transaction		0	(1,287)
Deferred income tax (benefit) expense		(6,839)	3,131
Changes in other assets and liabilities:
Accrued interest receivable and payable, net		1,169	(6,312)
Accounts receivable and payable, net		(12,872)	(18,285)
Income tax receivable and payable, net		13,181	(29,398)
Accrued compensation		(48,740)	(7,702)
Foreign exchange spot contracts, net		1,803	7,522
Other, net		20,821	71,349
Net cash provided by operating activities		273,004	254,207
Cash flows from investing activities:
Purchases of available-for-sale securities		0	(2,911,486)
Proceeds from sales of available-for-sale securities		2,879,409	7,762
Proceeds from maturities and pay downs of available-for-sale securities		1,002,523	1,238,950
Purchases of held-to-maturity securities		(225,526)	(2,057,030)
Proceeds from maturities and pay downs of held-to-maturity securities		1,206,367	1,153,363
Purchases of non-marketable and other securities		(41,925)	(30,245)
Proceeds from sales and distributions of non-marketable and other securities		54,420	115,338
Net increase in loans		(2,373,798)	(911,694)
Proceeds from recoveries of charged-off loans		8,158	5,119
Effect of deconsolidation of noncontrolling interest		0	15,995
Net proceeds from SVBIF sale transaction		0	39,284
Purchases of premises and equipment		(37,184)	(37,465)
Net cash provided by (used for) investing activities		2,472,444	(3,372,109)
Cash flows from financing activities:
Net (decrease) increase in deposits		(953,360)	2,626,379
Net decrease in short-term borrowings		(772,479)	(4,025)
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests		(8,236)	(16,789)
Tax effect from stock exercises		(6,300)	10,813
Proceeds from issuance of common stock, ESPP, and ESOP		12,989	18,224
Proceeds from issuance of 3.50% Senior Notes		0	346,431
Net cash (used for) provided by financing activities		(1,727,386)	2,981,033
Net increase (decrease) in cash and cash equivalents		1,018,062	(136,869)
Cash and cash equivalents at beginning of period		1,503,257
Cash and cash equivalents at end of period		2,521,319
Cash and cash equivalents, including discontinued operations, at beginning of period	[1]		1,811,014
Cash and cash equivalents, including discontinued operations, at end of period			1,674,145
Cash paid during the period for:
Interest		39,317	32,183
Income taxes		186,474	182,479
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax		86,347	57,605
Distributions of stock from investments (2)		$ 750	$ 64,120	[2]

[1] Cash and cash equivalents at December 31, 2014 included $15.0 million recognized in assets held-for-sale in conjunction with the SVBIF sale transaction.

[2] For the nine months ended September 30, 2015, includes distributions to noncontrolling interests of $41.5 million.