Consolidated Statements of Condition (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 582,558		$ 564,150
Securities:
Available-for-sale ($10,934 and $11,436 pledged, respectively)	175,710		173,783
Held-to-maturity ($4,528,139 and $4,584,886 pledged, respectively) (fair value of $7,028,201 and $7,085,971, respectively)	6,784,883	[1]	6,922,667	[2]
Total securities	6,960,593		7,096,450
Non-covered loans held for sale	351,467		379,399
Non-covered loans held for investment, net of deferred loan fees and costs	33,012,358		33,024,956
Less: Allowance for losses on non-covered loans	(142,168)		(139,857)
Non-covered loans held for investment, net	32,870,190		32,885,099
Covered loans	2,341,428		2,428,622
Less: Allowance for losses on covered loans	(43,942)		(45,481)
Covered loans, net	2,297,486		2,383,141
Total loans, net	35,519,143		35,647,639
Federal Home Loan Bank stock, at cost	464,942	[3]	515,327	[3]
Premises and equipment, net	322,039		319,002
FDIC loss share receivable	378,577		397,811
Goodwill	2,436,131		2,436,131
Core deposit intangibles, net	6,359		7,943
Mortgage servicing rights	220,371		227,297
Bank-owned life insurance	921,885		915,156
Other real estate owned (includes $31,015 and $32,048, respectively, covered by loss sharing agreements)	101,326		94,004
Other assets	337,791		338,307
Total assets	48,251,715		48,559,217
Deposits:
NOW and money market accounts	12,629,459		12,549,600
Savings accounts	7,698,404		7,051,622
Certificates of deposit	5,848,389		6,420,598
Non-interest-bearing accounts	2,755,135		2,306,914
Total deposits	28,931,387		28,328,734
Wholesale borrowings:
Federal Home Loan Bank advances	8,985,987		10,183,132
Repurchase agreements	3,425,000		3,425,000
Fed funds purchased	495,000		260,000
Total wholesale borrowings	12,905,987		13,868,132
Junior subordinated debentures	358,415		358,355
Total borrowed funds	13,264,402		14,226,487
Other liabilities	261,129		222,181
Total liabilities	42,456,918		42,777,402
Stockholders' equity:
Preferred stock at par $0.01 (5,000,000 shares authorized; none issued)
Common stock at par $0.01 (600,000,000 shares authorized; 444,278,206 and 442,659,460 shares issued, and 444,277,802 and 442,587,190 shares outstanding, respectively)	4,443		4,427
Paid-in capital in excess of par	5,370,090		5,369,623
Retained earnings	472,977		464,569
Treasury stock, at cost (404 and 72,270 shares, respectively)	(7)		(1,118)
Accumulated other comprehensive loss, net of tax:
Net unrealized gain on securities available for sale, net of tax of $3,183 and $2,022, respectively	4,705		2,990
Net unrealized loss on the non-credit portion of other-than-temporary impairment ("OTTI") losses on securities, net of tax of $3,433 and $3,444, respectively	(5,370)		(5,387)
Net unrealized loss on pension and post-retirement obligations, net of tax of $35,274 and $36,118, respectively	(52,041)		(53,289)
Total accumulated other comprehensive loss, net of tax	(52,706)		(55,686)
Total stockholders' equity	5,794,797		5,781,815
Total liabilities and stockholders' equity	$ 48,251,715		$ 48,559,217

[1] Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At March 31, 2015, the non-credit portion of OTTI recorded in AOCL was $8.8 million (before tax).

[2] Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At December 31, 2014, the non-credit portion of OTTI recorded in AOCL was $8.8 million (before taxes).

[3] Carrying value and estimated fair value are at cost.