Loans Receivable, Net (Details - TDRs Specific Valuation Allowance) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Impaired Financing Receivable With And With No Related Allowance [Line Items]
Recorded Investment in TDRs	$ 486	$ 488
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	58	61
One- To Four-Family [Member]
Impaired Financing Receivable With And With No Related Allowance [Line Items]
Impaired Financing Receivable, With Related Allowance, Recorded Investment	69	72
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	208	214
Recorded Investment in TDRs	277	286
Impaired Financing Receivable, Related Allowance	8	9
Impaired Financing Receivable, with Related Allowance, Net Investment	61	63
Impaired Financing Receivable, with No Related Allowance, Net Investment	208	214
Impaired Financing Receivables, Net Investment, Total	269	277
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	8	9
Home Equity [Member]
Impaired Financing Receivable With And With No Related Allowance [Line Items]
Impaired Financing Receivable, With Related Allowance, Recorded Investment	115	111
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	94	91
Recorded Investment in TDRs	209	202
Impaired Financing Receivable, Related Allowance	50	52
Impaired Financing Receivable, with Related Allowance, Net Investment	65	59
Impaired Financing Receivable, with No Related Allowance, Net Investment	94	91
Impaired Financing Receivables, Net Investment, Total	159	150
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 50	$ 52

Amount of net investment in impaired financing receivables for which there is no related allowance for credit losses.

No definition available.

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- Definition

Amount of net investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

No definition available.

+ Details

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- Definition

Amounf of net investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

No definition available.

+ Details

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

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- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

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- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

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