Employee Benefits - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
U.K.
Defined Benefit Plan Disclosure [Line Items]
Non-cash settlement charge	$ 0	$ 0	$ 0	$ 0
Expected future employer cash contribution	2		2
Other
Defined Benefit Plan Disclosure [Line Items]
Non-cash settlement charge	0	27	0	27
Expected future employer cash contribution	13		13
U.S.
Defined Benefit Plan Disclosure [Line Items]
Non-cash settlement charge	0	$ 0	0	$ 0
Expected future employer cash contribution	$ 53		$ 53