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Investments (Residential Mortgage Loans By Year Of Origination) (Details) - Residential [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 184
2019	366
2018	187
Total	737	$ 735
Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	176
2019	315
2018	175
Total	666	718
Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	8
2019	51
2018	12
Total	$ 71	$ 17

X

- Definition

Amount of financing receivable originated in current fiscal year.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
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- Definition

Amount of financing receivable originated in fiscal year prior to latest fiscal year.

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Amount of financing receivable originated two years prior to latest fiscal year.

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Amount, before allowance for credit loss, of financing receivable.

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