Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Interest Income:
Mortgage and other loans	$ 364,504		$ 345,530
Securities and money market investments	64,409		69,781
Total interest income	428,913		415,311
Interest Expense:
NOW and money market accounts	11,052		8,396
Savings accounts	12,333		6,473
Certificates of deposit	17,116		19,060
Borrowed funds	95,644		97,232
Total interest expense	136,145		131,161
Net interest income	292,768		284,150
Provision for (recovery of) losses on loans	7		(14,630)
Net interest income after (recoveries of) provisions for loan losses	292,761		298,780
Non-Interest Income:
Mortgage banking income	18,406		14,610
Fee income	8,394		8,894
Bank-owned life insurance	6,704		6,829
Net gain on sales of securities	211		4,873
FDIC indemnification income (expense)	702		(11,704)
Gain on Visa shares sold			3,856
Other income	17,817		9,877
Total non-interest income	52,234		37,235
Operating expenses:
Compensation and benefits	87,209		75,740
Occupancy and equipment	25,299		25,998
General and administrative	42,744		42,264
Total operating expenses	155,252		144,002
Amortization of core deposit intangibles	1,584		2,323
Total non-interest expense	156,836	[1]	146,325
Income before income taxes	188,159		189,690
Income tax expense	68,900		74,436
Net income	119,259		115,254
Other comprehensive income, net of tax:
Change in net unrealized gain on securities available for sale, net of tax of $1,161 and $2,529, respectively	1,715		3,729
Change in the non-credit portion of OTTI losses recognized in other comprehensive income, net of tax of $11 and $11, respectively	17		17
Change in pension and post-retirement obligations, net of tax of $844 and $357, respectively	1,248		526
Less: Reclassification adjustment for sales of available-for-sale securities, net of tax of $1,969			(2,904)
Total other comprehensive income, net of tax	2,980		1,368
Total comprehensive income, net of tax	122,239		116,622
Basic earnings per share	$ 0.27		$ 0.26
Diluted earnings per share	$ 0.27		$ 0.26
Non-Covered Loans
Interest Expense:
Provision for (recovery of) losses on loans	(870)
Covered Loans
Interest Expense:
Provision for (recovery of) losses on loans	$ 877		$ (14,630)

[1] Includes both direct and indirect expenses.