Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Fair value of assets and liabilities measured 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. See Note 1 for the definitions of these levels and for further information on our financial instruments.

	December 31, 2024								December 31, 2023
$ in millions	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Financial Assets
Marketable securities	$	325	$	—	$	14	$	339	$	321	$	1	$	8	$	330
Marketable securities valued using NAV							8								9
Total marketable securities	325		—		14		347		321		1		8		339
Derivatives	—		(11)		—		(11)		—		5		—		5