Assets and Liabilities Measured at Fair Value (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables summarize our assets and liabilities measured at fair value on a recurring basis as of June 30, 2022 and December 31, 2021, aggregated by the level in the fair value hierarchy within which those measurements fall (dollars in millions):

	June 30, 2022
				Fair Value Measurements Using
	Fair Value			Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Assets:
Investments of insurance subsidiaries:
Debt securities	$	387		$	—		$	387		$	—
Money market funds and other		106			106			—			—
Investments of insurance subsidiaries		493			106			387			—
Less amounts classified as current assets		(114	)		(102	)		(12	)		—
	$	379		$	4		$	375		$	—
Interest rate swap (Other current assets)	$	1		$	—		$	1		$	—

	December 31, 2021
				Fair Value Measurements Using
	Fair Value			Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)			Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Investments of insurance subsidiaries:
Debt securities	$	416		$	—		$	416	$	—
Money market funds and other		125			125			—		—
Investments of insurance subsidiaries		541			125			416		—
Less amounts classified as current assets		(103	)		(103	)		—		—
	$	438		$	22		$	416	$	—
Liabilities:
Interest rate swap (Other accrued expenses)	$	8		$	—		$	8	$	—