Restructuring Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 83
Restructuring Charges	11	$ 22
Payments made during the period	(35)	$ (15)
Ending Balance	59
Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Beginning Balance	83
Restructuring Charges	11
Payments made during the period	(35)
Ending Balance	59
Other Exit Costs Liability
Restructuring Reserve [Roll Forward]
Beginning Balance	0
Restructuring Charges	0
Payments made during the period	0
Ending Balance	$ 0