Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Cash flows from operating activities:
Net income before noncontrolling interests	$ 249,813		$ 282,793		$ 136,817
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	44,330		6,101		44,628
Provision for unfunded credit commitments	488		4,397		4,083
Changes in fair values of derivatives, net	(10,123)		(26,202)		(3,867)
Gains on investment securities, net	(122,114)		(195,034)		(93,360)
Depreciation and amortization	28,122		27,490		23,224
Amortization of premiums and discounts on available-for-sale securities, net	55,580		27,849		24,071
Tax benefit (expense) from stock exercises	2,189		798		(189)
Amortization of share-based compensation	21,861		18,221		13,761
Amortization of deferred loan fees	(58,517)		(61,158)		(50,488)
Deferred income tax expense (benefit)	1,800		7,362		(1,434)
Gain on the sale of certain assets related to our equity services management business	(4,243)		0		0
Net gain from note repurchases and termination of corresponding interest rate swaps	0	[1]	(3,123)	[1]	0	[1]
Losses from the write-off of premises and equipment	(4,031)		0		0
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(6,254)		(12,370)		1,560
Accounts receivable and payable, net	35,221		(39,401)		(4,820)
Income tax payable and receivable, net	9,631		(809)		16,694
Prepaid FDIC assessments and amortization	8,315		8,754		10,648
Accrued compensation	(15,918)		35,403		41,195
Foreign exchange spot contracts, net	(50,901)		62,747		(2,615)
Other, net	6,828		22,469		3,320
Net cash provided by operating activities	200,139		166,287		163,228
Cash flows from investing activities:
Purchases of available-for-sale securities	(3,877,852)		(7,127,525)		(6,757,150)
Proceeds from sales of available-for-sale securities	329,161		1,415,463		655,555
Proceeds from maturities and pay downs of available-for-sale securities	2,734,166		3,215,186		2,151,574
Purchases of nonmarketable securities (cost and equity method accounting)	(126,318)		(59,081)		(53,450)
Proceeds from sales of nonmarketable securities (cost and equity method accounting)	51,246		36,589		20,147
Purchases of nonmarketable securities (fair value accounting)	(135,362)		(164,910)		(119,313)
Proceeds from sales and distributions of nonmarketable securities (fair value accounting)	124,538		80,757		44,739
Net increase in loans	(1,964,250)		(1,429,702)		(983,077)
Proceeds from recoveries of charged-off loans	9,693		25,123		16,788
Purchases of premises and equipment	(38,291)		(30,751)		(27,056)
Proceeds from the sale of certain assets related to our equity services management business	2,870		0		0
Proceeds from sale of other real estate owned	0		0		196
Payment for acquisition of intangibles, net of cash acquired	0		0		(360)
Payment for acquisition of remaining interest in eProsper	0		0		(1,300)
Net cash used for investing activities	(2,890,399)		(4,038,851)		(5,052,707)
Cash flows from financing activities:
Net increase in deposits	2,466,916		2,372,595		4,005,004
Increase (decrease) in short-term borrowings	166,110		(37,245)		(1,510)
Principal payments of other long term debt	(1,222)		(4,179)		(1,961)
Capital contributions from noncontrolling interests, net of distributions	59,057		96,178		85,699
Tax benefit from stock exercises	5,581		6,342		4,151
Proceeds from issuance of common stock and ESPP	29,282		36,873		24,019
Principal payments of 5.70% Senior Notes	(141,429)		0		0
Payments for repurchases of portions of 5.70% Senior Notes and 6.05% Subordinated Notes, including repurchase premiums and associated fees	0		(346,443)		0
Proceeds from termination of portions of interest rate swaps associated with 5.70% Senior Notes and 6.05% Subordinated Notes	0		36,959		0
Payments for settlement of 3.875% Convertible Notes	0		(250,000)		0
Proceed from issuance of 5.375% Senior Notes, net of discount and issuance cost	0		0		344,476
Repurchase of warrant under CPP	0		0		(6,820)
Net cash provided by financing activities	2,584,295		1,911,080		4,453,058
Net decrease in cash and cash equivalents	(105,965)		(1,961,484)		(436,421)
Cash and cash equivalents at beginning of period	1,114,948		3,076,432		3,512,853
Cash and cash equivalents at end of period	1,008,983		1,114,948		3,076,432
Cash paid during the period for:
Interest	31,048		41,203		35,588
Income taxes	95,678		103,848		41,763
Noncash items during the period:
Unrealized gains on available-for-sale securities, net of tax	$ 23,612		$ 65,689		$ 17,168

[1] Represents gains from the repurchase of 109 million of our 5.70% Senior Notes and $204 million of our 6.05% Subordinated Notes and the termination of the corresponding portions of interest rate swaps in 2011. For more information, see Note 11–"Short-Term Borrowings and Long-Term Debt."