General (Effects of Adoption of ASU 2018-12, Operations) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Insurance claims and policyholders’ benefits (1)	$ 1,653	$ 1,478	[1]
Income (loss) before income tax	371	355	[1]
Income tax (expense) benefit	74	60	[1]
Net income	$ 297	$ 295	[1],[2]
Basic earnings (loss) per share (in usd per share)	$ 1.10	$ 1.08	[1]
Diluted earnings (loss) per share (in usd per share)	$ 1.09	$ 1.08	[1]
Insurance claims and policyholders benefits, including policyholders' dividends, remeasurement impact	$ 1	$ 5
Prior to Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Insurance claims and policyholders’ benefits (1)		1,455
Income (loss) before income tax		378
Income tax (expense) benefit		65
Net income		$ 313
Basic earnings (loss) per share (in usd per share)		$ 1.15
Diluted earnings (loss) per share (in usd per share)		$ 1.15
Effect of Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Insurance claims and policyholders’ benefits (1)		$ 23
Income (loss) before income tax		(23)
Income tax (expense) benefit		(5)
Net income		$ (18)
Basic earnings (loss) per share (in usd per share)		$ (0.07)
Diluted earnings (loss) per share (in usd per share)		$ (0.07)

[1] As of January 1, 2023, the Company adopted ASU 2018-12, Financial Services-Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts (ASU 2018-12) using the modified retrospective method applied as of the transition date of January 1, 2021. Prior period amounts in the financial statements have been adjusted to reflect application of the new guidance. See Note A to the Condensed Consolidated Financial Statements for additional information.

[2] As of January 1, 2023, the Company adopted ASU 2018-12 using the modified retrospective method applied as of the transition date of January 1, 2021. Prior period amounts in the financial statements have been adjusted to reflect application of the new guidance. See Note A to the Condensed Consolidated Financial Statements for additional information.