NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 2) (USD $)					3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Residential Minimum item	Mar. 31, 2014 Residential Maximum item	Mar. 31, 2014 Residential Single-family	Mar. 31, 2013 Residential Single-family	Mar. 31, 2014 Residential Single-family Minimum	Mar. 31, 2014 Residential Single-family Maximum	Mar. 31, 2014 Residential Multifamily	Mar. 31, 2013 Residential Multifamily	Mar. 31, 2014 Residential Multifamily Minimum	Mar. 31, 2014 Residential Multifamily Midrange	Mar. 31, 2014 Residential Multifamily Maximum
Non-Covered loans receivable disclosures
Accrued interest on covered and non-covered loans receivable	$ 83,700,000	$ 94,500,000
Covered and non-covered loans receivable pledged to secure borrowings from the FHLB and the Federal Reserve Bank	11,260,000,000	10,570,000,000
Number of units of residential property securing fixed and adjustable rate first mortgage loans			1	4
New first mortgage loans originated					$ 181,700,000	$ 263,100,000			$ 95,300,000	$ 50,300,000
Adjustable rate mortgage, term of initial fixed interest rates							1 year	3 years			6 months	3 years	5 years
Loans to value ratio (as a percent)								60.00%