Other Borrowings and Corporate Debt (Details - Corporate Debt) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Face Value		$ 420
Total corporate debt	$ 1,410	$ 1,409
Debt Instrument Interest Rate Stated Percentage [Abstract]
Debt Instrument, Maturity Date		Jun. 20, 2028
Losses on early extinguishment of debt	0	$ (4)	$ (58)
Corporate Debt Securities [Member]
Debt Instrument [Line Items]
Face Value	1,420	1,420
Unamortized discount	(10)	(11)
Total corporate debt	1,410	1,409
Senior Notes Interest Bearing Two And Nine Five Percent [Member] \| Corporate Debt Securities [Member]
Debt Instrument [Line Items]
Face Value	600	600
Unamortized discount	(3)	(4)
Total corporate debt	$ 597	$ 596
Debt Instrument Interest Rate Stated Percentage [Abstract]
Debt instrument maturity year	2022	2022
Debt instrument, interest rate, stated percentage	2.95%	2.95%
Senior Notes Interest Bearing Three And Eight Percent [Member] \| Corporate Debt Securities [Member]
Debt Instrument [Line Items]
Face Value	$ 400	$ 400
Unamortized discount	(3)	(3)
Total corporate debt	$ 397	$ 397
Debt Instrument Interest Rate Stated Percentage [Abstract]
Debt instrument maturity year	2027	2027
Debt instrument, interest rate, stated percentage	3.80%	3.80%
Senior Notes Interest Bearing Four And Five Percent [Member] \| Corporate Debt Securities [Member]
Debt Instrument [Line Items]
Face Value	$ 420	$ 420
Unamortized discount	(4)	(4)
Total corporate debt	$ 416	$ 416
Debt Instrument Interest Rate Stated Percentage [Abstract]
Debt instrument maturity year	2028	2028
Debt instrument, interest rate, stated percentage	4.50%	4.50%

The year when the debt instrument is scheduled to be fully repaid.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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