Commitments and Contingencies (European Commission Investigation) (Details) - USD ($) $ in Millions	12 Months Ended				15 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Loss Contingencies [Line Items]
European Commission investigation	$ 0	$ 0	$ (2)	$ 89
European Commission Competition Law Investigation [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
European Commission investigation					$ (92)