CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010
Investment securities held-to-maturity, fair value	$ 136,959	$ 120,873	$ 209,207
Other investment securities, realizable value	176,114	165,233	153,845
Preferred stock, shares authorized	30,000,000	30,000,000	30,000,000
Preferred stock, shares issued	2,006,391	2,006,391	2,006,391
Preferred stock, shares outstanding	2,006,391	2,006,391	2,006,391
Preferred stock, aggregated liquidation preference value	50,160	50,160	50,160
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	1,700,000,000	1,700,000,000	1,700,000,000
Common stock, shares issued	1,024,201,427	1,022,929,158	1,022,878,228
Common stock, shares outstanding	1,023,977,895	1,022,727,802	1,022,695,797
Treasury stock - at cost, shares	223,532	201,356	182,431
Accumulated other comprehensive (loss) income, tax	$ (51,544)	$ (55,616)	$ (17,744)