Fair Value of Financial Instruments (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Fair value information of assets and liabilities measured at fair value on a recurring basis

The following table presents the financial assets and liabilities the company records at fair value on a recurring basis identified by the level of inputs used to determine fair value:

	March 31, 2022								December 31, 2021
$ in millions	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Financial Assets
Marketable securities	$	382	$	—	$	7	$	389	$	393	$	1	$	7	$	401
Marketable securities valued using NAV							15								17
Total marketable securities	382		—		7		404		393		1		7		418
Derivatives	—		(1)		—		(1)		—		(1)		—		(1)