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Scheduled Maturity Distribution of Fixed Maturity Securities (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Amortized cost or cost
Due one year or less	$ 1,267
Due after one year through five years	8,281
Due after five years through ten years	12,210
Due after ten years	22,425
Subtotal	44,183
Amortized cost or cost, fixed maturity securities	48,998	$ 49,365
Fair value
Due one year or less	1,254
Due after one year through five years	8,022
Due after five years through ten years	11,427
Due after ten years	20,135
Subtotal	40,838
Fair value, fixed maturity securities	45,233	$ 46,781
Residential mortgage-backed
Amortized cost or cost
Fixed maturity securities	906
Fair value
Fixed maturity securities	851
Commercial mortgage-backed
Amortized cost or cost
Fixed maturity securities	1,605
Fair value
Fixed maturity securities	1,312
Other asset-backed
Amortized cost or cost
Fixed maturity securities	2,304
Fair value
Fixed maturity securities	$ 2,232

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