Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Loss Carryforwards [Line Items]
Provision for income taxes	$ (19)	$ (75)	$ (62)	$ (119)
Effective tax rate	10.50%	38.90%	18.40%	15.20%
Liabilities for uncertain tax positions	$ 37		$ 37
U.K.
Operating Loss Carryforwards [Line Items]
Deferred tax expense				$ 40
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Expected decrease in liability for uncertain tax position	3		3
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Expected decrease in liability for uncertain tax position	$ 6		$ 6