CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Held To Maturity Securities Fair Value	$ 124,829	$ 125,254	$ 147,816
Realizable Value Of Other Investment Securities	$ 197,372	$ 181,583	$ 176,336
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
Common Stock Par Or Stated Value Per Share	$ 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	1,027,555,936	1,026,346,396	1,023,628,492
Common Stock Shares Outstanding	1,027,117,068	1,025,904,567	1,023,416,118
Treasury stock - at cost, shares	438,868	441,829	212,374