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Statutory Financial Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Statutory Accounting Practices [Line Items] |  |  |
Dividends available to be paid | $ 7,400 |  |
Approximate increase in statutory capital and surplus resulting from discount of certain A&E liabilities | 115 | $ 120 |
Minimum statutory capital and surplus required to satisfy regulatory requirements | 41,000 | 36,900 |
Statutory Accounting Practices, Permitted Practice, Amount | 71 | 79 |
Other | 147 | 85 |
PropertyAndCasualtySubsidiaries [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | 45,271 | 40,824 |
Statutory net income | 8,699 | 4,028 | $ 7,983
LifeSubsidiaries [Member] [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | 7,278 | 4,834 |
Statutory net income | $ 459 | $ 1,425 | $ 424

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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-8 + Details
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- Definition Amount of an item which resulted in a difference from applying state prescribed or permitted statutory accounting practices rather than statutory accounting practices prescribed by National Association of Insurance Commissioners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479989/944-505-50-3 + Details
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- Definition The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479989/944-505-50-1 + Details
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