CONDENSED CONSOLIDATED BALANCE SHEETS PARENTHETICAL - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Available for Sale at Fair value - Amortized cost	$ 26,305,332	$ 23,105,597
Preferred stock par value (per share)	$ 0.01	$ 0.01
Preferred stock shares authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common stock par value (per share)	$ 0.01	$ 0.01
Common stock shares authorized	140,000,000	140,000,000
Common stock shares issued	79,137,758	79,137,758
Common stock shares outstanding	66,438,559	68,772,961
Treasury stock, shares	12,699,199	10,364,797
Allowances for Loan and Lease Losses, Real Estate	$ 5,942	$ 6,471