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Investments of Insurance Subsidiaries - Schedule of Maturities of Investments (Detail) $ in Millions | Sep. 30, 2024 USD ($)
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Investments, Debt and Equity Securities [Abstract] |
Due in one year or less, Amortized Cost | $ 34
Due after one year through five years, Amortized Cost | 140
Due after five years through ten years, Amortized Cost | 155
Due after ten years, Amortized Cost | 67
Amortized Cost, Total | 396
Due in one year or less, Fair Value | 34
Due after one year through five years, Fair Value | 137
Due after five years through ten years, Fair Value | 143
Due after ten years, Fair Value | 64
Fair Value, Total | $ 378

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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