Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	$ 38	$ 5
Other Restructuring And Restructuring-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	2	$ 5
Project Phoenix
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	36
Project Phoenix | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	5
Project Phoenix | Minimum
Restructuring Cost and Reserve [Line Items]
Estimated aggregate restructuring charges	100
Expected cash payments	95
Project Phoenix | Minimum | Employee Severance
Restructuring Cost and Reserve [Line Items]
Estimated aggregate restructuring charges	80
Project Phoenix | Minimum | Office Space Reductions
Restructuring Cost and Reserve [Line Items]
Estimated aggregate restructuring charges	15
Project Phoenix | Maximum
Restructuring Cost and Reserve [Line Items]
Estimated aggregate restructuring charges	130
Expected cash payments	120
Project Phoenix | Maximum | Employee Severance
Restructuring Cost and Reserve [Line Items]
Estimated aggregate restructuring charges	105
Project Phoenix | Maximum | Office Space Reductions
Restructuring Cost and Reserve [Line Items]
Estimated aggregate restructuring charges	$ 20