Investments of Insurance Subsidiaries (Tables)

3 Months Ended

Mar. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

A summary of our insurance subsidiaries’ investments at March 31, 2022 and December 31, 2021 follows (dollars in millions):

	March 31, 2022
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	411	$	4	$	(14	)	$	401
Money market funds and other		112		—		—			112
	$	523	$	4	$	(14	)		513
Amounts classified as current assets									(105	)
Investment carrying value								$	408

	December 31, 2021
			Unrealized Amounts
	Amortized Cost		Gains		Losses			Fair Value
Debt securities	$	400	$	18	$	(2	)	$	416
Money market funds and other		125		—		—			125
	$	525	$	18	$	(2	)		541
Amounts classified as current assets									(103	)
Investment carrying value								$	438

Schedule of Maturities of Investments

Scheduled maturities of investments in debt securities at March 31, 2022 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	8	$	8
Due after one year through five years		139		140
Due after five years through ten years		173		166
Due after ten years		91		87
	$	411	$	401