Strategic Initiatives - Restructuring Liability (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring liability at beginning of period	$ 56
Restructuring costs accrued during the period	53
Restructuring costs paid during the period	(61)
Restructuring liability at end of period	$ 48
Restructuring Incurred Cost Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag	Restructuring costs accrued during the period
Severance and Other Employee Costs
Restructuring Reserve [Roll Forward]
Restructuring liability at beginning of period	$ 10
Restructuring costs accrued during the period	23
Restructuring costs paid during the period	(17)
Restructuring liability at end of period	16
Lease Termination and Associated Costs
Restructuring Reserve [Roll Forward]
Restructuring liability at beginning of period	46
Restructuring costs accrued during the period	2
Restructuring costs paid during the period	(16)
Restructuring liability at end of period	32
Other
Restructuring Reserve [Roll Forward]
Restructuring liability at beginning of period	0
Restructuring costs accrued during the period	28
Restructuring costs paid during the period	(28)
Restructuring liability at end of period	$ 0