Strategic Initiatives - Narrative (Details) - Restructuring Plan - USD ($) $ in Millions	3 Months Ended		36 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 31	$ 18
Restructuring charges recorded to date	600
Forecast
Restructuring Cost and Reserve [Line Items]
Expected period for completion of restructuring plan			3 years
Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges, pre-tax	780
Expected restructuring charges, after-tax	590
Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges, pre-tax	860
Expected restructuring charges, after-tax	$ 650