General (Effects of Adoption ASU 2018-12, Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	$ 297	$ 295	[1],[2]
Deferred income tax expense	21	12	[3]
Insurance reserves	$ 432	512	[3]
Prior to Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income		313
Deferred income tax expense		17
Insurance reserves		489
Effect of Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income		(18)
Deferred income tax expense		(5)
Insurance reserves		$ 23

[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.

[3] 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.