Income Taxes - Assessment of Deferred Tax Asset Valuation Allowance (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Valuation Allowance [Line Items]
Valuation allowance related to certain tax attribute carryforward	$ 864
Federal Tax Credit Carryforwards and Tax Credit Carryforwards
Valuation Allowance [Line Items]
Valuation allowance related to certain tax attribute carryforward	713
Other Deferred Tax Assets
Valuation Allowance [Line Items]
Valuation allowance related to certain tax attribute carryforward	151
U.S.. Life Insurance Companies
Valuation Allowance [Line Items]
Deferred tax asset valuation allowance recognized	1,400
Non U.S.. Life Insurance Companies
Valuation Allowance [Line Items]
Deferred tax asset valuation allowance recognized	905
Foreign And State Jurisdictions
Valuation Allowance [Line Items]
Deferred tax asset valuation allowance recognized	$ (31)

Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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