Investments of Insurance Subsidiaries (Tables)

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

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

	March 31, 2024
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	402	$	—	$	(30	)	$	372
Money market funds and other		194		—		—			194
	$	596	$	—	$	(30	)		566
Amounts classified as current assets									(95	)
Investment carrying value								$	471

	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 March 31, 2024 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	14	$	14
Due after one year through five years		147		141
Due after five years through ten years		161		143
Due after ten years		80		74
	$	402	$	372