Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets, Gross
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Policyholder Liabilities	$ 2,668	$ 2,169
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross	3,083	0
Deferred Tax Assets, Operating Loss Carryforwards	185	60
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation	8	22
Deferred Tax Assets, Other Foreign Deferreds	1,011	0
Deferred Tax Assets, Other	74	39
Deferred Tax Assets, Gross	7,311	2,290
Deferred Tax Assets, Valuation Allowance	(105)	(66)
Deferred Tax Assets, Net of Valuation Allowance	7,206	2,224
Deferred Tax Liabilities, Gross [Abstract]
Deferred Tax Liabilities, Investments	0	974
Deferred Tax Liabilities, Other Comprehensive Income	0	626
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost	946	1,026
Deferred Tax Liabilities, Other	2	174
Deferred Tax Liabilities, Gross	1,327	2,800
Deferred Tax Liabilities, Net		(576)
Income Tax Assets and Liabilities
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Policyholder Liabilities	2,668	2,169
Deferred Tax Assets, Investments	282	0
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross	3,083	0
Deferred Tax Assets, Operating Loss Carryforwards	185	60
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation	8	22
Deferred Tax Assets, Other Foreign Deferreds	1,011	0
Deferred Tax Assets, Other	74	39
Deferred Tax Assets, Gross	7,311	2,290
Deferred Tax Assets, Valuation Allowance	105	66
Deferred Tax Assets, Net of Valuation Allowance	7,206	2,224
Deferred Tax Liabilities, Investments	0	974
Deferred Tax Liabilities, Intangible Assets	379	0
Deferred Tax Liabilities, Other Comprehensive Income	0	626
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost	946	1,026
Deferred Tax Liabilities, Other	2	174
Deferred Tax Liabilities, Gross	1,327	2,800
Deferred Tax Liabilities, Net		$ 576
Deferred Tax Assets, Net	$ (5,879)

Deferred Tax Assets, Other Foreign Deferreds

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Income Tas Assets and Liabilities [Table]

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other.

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The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from estimated policyholder reserves, which will be deductible from future taxable income when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the tax deduction to be taken.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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The amount as of the balance sheet date of the estimated future tax effects attributable to policy acquisition costs being expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount of deferred tax liability attributable to taxable temporary differences classified as other.

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Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains in other comprehensive income.

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