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Business and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Schedule of Changes in Other Comprehensive Earnings (Loss)
Changes in the balance of Other comprehensive earnings (loss) for the years ended December 31, 2024, 2023 and 2022, by component are as follows:
 Unrealized gain (loss) on investments and other financial instruments, net (excluding investments in unconsolidated affiliates)Change in current discount rate - future policy benefitsChange in instrument-specific credit risk - market risk benefitsOtherTotal Accumulated Other Comprehensive Earnings (Loss)
 (In millions)
Balance January 1, 2022$986 $(1)$(116)$$878 
Reclassification adjustments181 — — (8)173 
Other comprehensive earnings(4,783)764 67 (4)(3,956)
Non-controlling interest33 — 35 
Balance December 31, 2022(3,583)763 (48)(2)(2,870)
Reclassification adjustments137 — — (11)126 
Other comprehensive earnings961 (189)(34)21 759 
Non-controlling interest(170)31 (1)(134)
Balance December 31, 2023(2,655)605 (76)(2,119)
Reclassification adjustments3— — (11)(8)
Other comprehensive earnings(157)224 10 82 
Non-controlling interest14 (21)— — (7)
Balance December 31, 2024$(2,795)$808 $(71)$$(2,052)