Investments of Insurance Subsidiaries (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

A summary of our insurance subsidiaries’ investments at September 30, 2023 and December 31, 2022 follows (dollars in millions):

	September 30, 2023
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	404	$	—	$	(43	)	$	361
Money market funds and other		124		—		—			124
	$	528	$	—	$	(43	)		485
Amounts classified as current assets									(103	)
Investment carrying value								$	382

	December 31, 2022
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	415	$	—	$	(38	)	$	377
Money market funds and other		96		—		—			96
	$	511	$	—	$	(38	)		473
Amounts classified as current assets									(92	)
Investment carrying value								$	381

Schedule of Maturities of Investments

Scheduled maturities of investments in debt securities at September 30, 2023 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	13	$	13
Due after one year through five years		148		139
Due after five years through ten years		165		140
Due after ten years		78		69
	$	404	$	361