Loans Receivable, Net (Details - TDRs Accrual and Nonaccrual) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Recorded Investment in TDRs	$ 486	$ 488
Financing Receivable, Troubled Debt Restructurings, Modifications, Total1	335	334
Financing Receivable, Troubled Debt Restructurings, Bankruptcy Notifications	151	154
Performing Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Accrual TDRs	219	226
Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual TDRs, Current	157	148
Nonaccrual TDRs, 30-89 Days Delinquent	31	30
Nonaccrual TDRs, 90-179 Days Delinquent	13	16
Nonaccrual TDRs, 180 Plus Days Delinquent	66	68
One- To Four-Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in TDRs	277	286
TDR unpaid principal balance	275	283
One- To Four-Family [Member] | Performing Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Accrual TDRs	105	106
One- To Four-Family [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual TDRs, Current	104	106
Nonaccrual TDRs, 30-89 Days Delinquent	19	19
Nonaccrual TDRs, 90-179 Days Delinquent	6	8
Nonaccrual TDRs, 180 Plus Days Delinquent	43	47
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in TDRs	209	202
Home Equity [Member] | Performing Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Accrual TDRs	114	120
Home Equity [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual TDRs, Current	53	42
Nonaccrual TDRs, 30-89 Days Delinquent	12	11
Nonaccrual TDRs, 90-179 Days Delinquent	7	8
Nonaccrual TDRs, 180 Plus Days Delinquent	$ 23	$ 21