Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income before noncontrolling interests		$ 170,977	$ 196,849
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses		69,674	32,965
Provision for (reduction of) unfunded credit commitments		547	(798)
Changes in fair values of derivatives, net		(3,439)	(33,030)
Gains on investment securities, net		(18,586)	(58,238)
Depreciation and amortization		23,768	19,753
Amortization of premiums and discounts on investment securities, net		7,923	9,662
Amortization of share-based compensation		14,425	15,986
Amortization of deferred loan fees		(46,896)	(43,194)
Pre-tax net gain on SVBIF sale transaction		0	(1,287)
Deferred income tax (benefit) expense		(6,374)	4,283
Changes in other assets and liabilities:
Accrued interest receivable and payable, net		232	2,087
Accounts receivable and payable, net		(2,598)	(10,038)
Income tax receivable and payable, net		(32,915)	4,881
Accrued compensation		(79,858)	(30,579)
Foreign exchange spot contracts, net		53,870	46,517
Other, net		(8,683)	55,060
Net cash provided by operating activities		142,067	210,879
Cash flows from investing activities:
Purchases of available-for-sale securities		0	(1,711,333)
Proceeds from sales of available-for-sale securities		2,878,272	6,674
Proceeds from maturities and pay downs of available-for-sale securities		660,464	791,954
Purchases of held-to-maturity securities		(140,641)	(1,032,637)
Proceeds from maturities and pay downs of held-to-maturity securities		743,117	734,606
Purchases of non-marketable and other securities		(31,239)	(21,694)
Proceeds from sales and distributions of non-marketable and other securities		28,064	93,210
Net (increase) decrease in loans		(2,091,903)	146,753
Proceeds from recoveries of charged-off loans		6,074	4,541
Effect of deconsolidation of noncontrolling interest		0	15,995
Net proceeds from SVBIF sale transaction		0	39,284
Purchases of premises and equipment		(24,057)	(24,539)
Net cash provided by (used for) investing activities		2,028,151	(957,186)
Cash flows from financing activities:
Net (decrease) increase in deposits		(1,546,209)	1,203,927
Net (decrease) in short-term borrowings		(271,681)	(5,244)
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests		(5,721)	(11,519)
Tax effect from stock exercises		(6,587)	10,157
Proceeds from issuance of common stock, ESPP, and ESOP		11,180	17,091
Proceeds from issuance of 3.50% Senior Notes		0	346,431
Net cash (used for) provided by financing activities		(1,819,018)	1,560,843
Net increase in cash and cash equivalents		351,200	814,536
Cash and cash equivalents at beginning of period		1,503,257
Cash and cash equivalents at end of period		1,854,457
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			2,625,550
Cash paid during the period for:
Interest		20,942	14,949
Income taxes		157,825	93,439
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax		118,610	22,910
Distributions of stock from investments (2)		$ 265	$ 63,148	[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 six months ended June 30, 2015, includes distributions to noncontrolling interests of $41.5 million.