Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 132,345	$ 98,574
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for loan losses	0	51,000
Depreciation and amortization	31,737	24,220
Addition to valuation allowance on mortgage servicing rights, net	4,477	8,966
Amortization of mortgage servicing rights	17,326	17,380
Amortization of other intangible assets	3,146	3,535
Amortization and accretion on earning assets, funding, and other, net	45,400	46,186
Tax benefit from exercise of stock options	5	11
(Gain) loss on sales of investment securities, net and impairment write-downs	(4,109)	802
(Gain) loss on sales of assets and impairment write-downs, net	11,887	10,400
Gain on mortgage banking activities, net	(46,655)	(15,141)
Mortgage loans originated and acquired for sale	(2,016,963)	(1,011,423)
Proceeds from sales of mortgage loans held for sale	2,137,051	960,423
(Increase) decrease in interest receivable	3,336	2,865
Increase (decrease) in interest payable	(11,446)	(7,191)
Net change in other assets and other liabilities	10,441	52,055
Net cash provided by (used in) operating activities	317,978	242,662
CASH FLOWS FROM INVESTING ACTIVITIES
Net (increase) decrease in loans	(1,151,440)	(1,094,612)
Purchases of:
Investment securities	(1,175,405)	(533,674)
Premises, equipment, and software, net of disposals	(58,865)	(49,312)
Other assets	(3,846)	(2,545)
Proceeds from:
Sales of investment securities	296,403	17,916
Calls and maturities of investment securities	1,286,345	1,216,224
Sales, prepayments, calls, and maturities of other assets	28,366	38,160
Sales of loans originated for investment	124,903	39,184
Net cash provided by (used in) investing activities	(653,539)	(368,659)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in deposits	1,479,782	(442,983)
Net decrease in deposits due to branch sales	(113,622)	0
Net increase (decrease) in short-term funding	(761,200)	784,394
Repayment of long-term funding	(25,979)	(370,091)
Proceeds from issuance of long-term funding	154,738	432,504
Proceeds from issuance of common stock	0	0
Proceeds from issuance of preferred stock	0	63,272
Redemption of preferred stock	0	(525,000)
Cash dividends on common stock	(26,009)	(5,231)
Cash dividends on preferred stock	(3,900)	(12,918)
Purchase of treasury stock	(31,552)	(640)
Net cash provided by (used in) financing activities	672,258	(76,693)
Net increase (decrease) in cash and cash equivalents	336,697	(202,690)
Cash and cash equivalents at beginning of period	616,595	868,162
Cash and cash equivalents at end of period	953,292	665,472
Supplemental disclosures of cash flow information:
Cash paid for interest	84,699	106,302
Cash (received) paid for income taxes	(32,050)	17,517
Loans and bank premises transferred to other real estate owned	29,957	37,168
Transfers of loans to held for sale	0	0
Capitalized mortgage servicing rights	$ 18,669	$ 9,807