Strategic Initiatives - Narrative (Details) - Restructuring Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended		36 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 41	$ 118	$ 72	$ 136
Restructuring charges recorded to date	641		641
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		780
Expected restructuring charges, after-tax	590		590
Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges, pre-tax	860		860
Expected restructuring charges, after-tax	$ 650		$ 650