Investments of Insurance Subsidiaries (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

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

	March 31, 2023
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	415	$	1	$	(32	)	$	384
Money market funds and other		102		—		—			102
	$	517	$	1	$	(32	)		486
Amounts classified as current assets									(96	)
Investment carrying value								$	390

	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 March 31, 2023 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	30	$	30
Due after one year through five years		119		114
Due after five years through ten years		187		168
Due after ten years		79		72
	$	415	$	384