Investments of Insurance Subsidiaries (Tables)

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

A summary of our insurance subsidiaries’ investments at September 30, 2024 and December 31, 2023 follows (dollars in millions):

	September 30, 2024
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	396	$	2	$	(20	)	$	378
Money market funds and other		270		—		—			270
	$	666	$	2	$	(20	)		648
Amounts classified as current assets									(95	)
Investment carrying value								$	553

	December 31, 2023
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	404	$	1	$	(29	)	$	376
Money market funds and other		188		—		—			188
	$	592	$	1	$	(29	)		564
Amounts classified as current assets									(87	)
Investment carrying value								$	477

Schedule of Maturities of Investments

Scheduled maturities of investments in debt securities at September 30, 2024 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	34	$	34
Due after one year through five years		140		137
Due after five years through ten years		155		143
Due after ten years		67		64
	$	396	$	378