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Investments - Interest and Investment Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Investments [Line Items]
Gross investment income	$ 524	$ 441
Investment expense	(46)	(39)
Interest and investment income	478	402
Fixed maturity securities, available-for-sale
Schedule of Investments [Line Items]
Gross investment income	332	307
Equity securities
Schedule of Investments [Line Items]
Gross investment income	8	5
Preferred securities
Schedule of Investments [Line Items]
Gross investment income	15	14
Mortgage loans
Schedule of Investments [Line Items]
Gross investment income	39	23
Invested cash and short-term investments
Schedule of Investments [Line Items]
Gross investment income	5	0
Limited partnerships
Schedule of Investments [Line Items]
Gross investment income	113	80
Tax deferred property exchange income
Schedule of Investments [Line Items]
Gross investment income	3	4
Other investments
Schedule of Investments [Line Items]
Gross investment income	$ 9	$ 8

X

- Definition

Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.2)
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

+ References

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