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Investments - Major Sources of Interest and Investment Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Gross investment income	$ 2,128	$ 978	$ 229
Investment expense	(167)	(78)	(4)
Interest and investment income	1,961	900	225
Fixed maturity securities, available-for-sale
Schedule of Investments [Line Items]
Gross investment income	1,267	708	70
Equity securities
Schedule of Investments [Line Items]
Gross investment income	23	19	10
Preferred securities
Schedule of Investments [Line Items]
Gross investment income	63	59	24
Mortgage loans
Schedule of Investments [Line Items]
Gross investment income	131	50	0
Invested cash and short-term investments
Schedule of Investments [Line Items]
Gross investment income	7	8	34
Limited partnerships
Schedule of Investments [Line Items]
Gross investment income	589	76	0
Tax deferred property exchange income
Schedule of Investments [Line Items]
Gross investment income	16	33	72
Other investments
Schedule of Investments [Line Items]
Gross investment income	$ 32	$ 25	$ 19

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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
-Topic 220
-SubTopic 10
-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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