CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Held-to-maturity securities, fair value (in dollars)	$ 1,811,122	$ 1,725,090
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	166,494,888	166,494,888
Common stock, shares outstanding	98,841,960	98,419,318
Treasury stock, shares	67,652,928	68,075,570
Unallocated common stock held by ESOP, shares	0	967,013
Series C Preferred Stock
Preferred stock, shares authorized	150,000
Preferred stock, shares issued	135,000	0
Preferred stock, shares outstanding	135,000	0