Loans Receivable, Net (Details - Nonperforming Loans) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Real Estate Acquired Through Foreclosure	$ 13	$ 13
Mortgage Loans in Process of Foreclosure, Amount	32	51
Nonperforming Financial Instruments [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	168	210
Nonperforming Financial Instruments [Member] \| One- To Four-Family [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	114	139
Nonperforming Financial Instruments [Member] \| Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual	$ 54	$ 71

Amount of financing receivable on nonaccrual status.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
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+ References

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 35
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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5162-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 45
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