Investments in fixed maturity securities (Tables)

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of investments in securities with fixed maturities

Investments in fixed maturity securities are summarized as follows (in millions).

	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
September 30, 2024
U.S. Treasury, U.S. government corporations and agencies	$	4,482	$	36	$	(2	)	$	4,516
Foreign governments		9,855		55		(6	)		9,904
Corporate bonds		1,154		243		(3	)		1,394
Other		209		21		(2	)		228
	$	15,700	$	355	$	(13	)	$	16,042
December 31, 2023
U.S. Treasury, U.S. government corporations and agencies	$	10,308	$	14	$	(53	)	$	10,269
Foreign governments		11,788		58		(41	)		11,805
Corporate bonds		1,212		241		(4	)		1,449
Other		217		21		(3	)		235
	$	23,525	$	334	$	(101	)	$	23,758

Schedule of amortized cost and estimated fair value of securities with fixed maturities

The amortized cost and estimated fair value of fixed maturity securities at September 30, 2024 are summarized below by contractual maturity dates (in millions). Actual maturities may differ from contractual maturities due to prepayment rights held by issuers.

	Due in one year or less		Due after one year through five years		Due after five years through ten years		Due after ten years		Mortgage- backed securities		Total
Amortized cost	$	9,735	$	5,128	$	573	$	130	$	134	$	15,700
Fair value		9,801		5,163		784		145		149		16,042