Consolidated Statements Of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements Of Financial Condition [Abstract]
Held to maturity, fair value	$ 2,027,197	$ 1,898,872
Junior subordinated debentures issued to capital trusts, fair value	$ 160,478	$ 161,734
Preferred stock, par value
Preferred stock, shares authorized	30,000,000	30,000,000
Preferred stock, shares issued	0	0
Common stock, par value
Common stock, shares authorized	220,974,508	220,974,508
Common stock, shares issued	170,209,090	170,131,085
Treasury stock, shares	34,776	597,459