Strategic Initiatives - Narrative (Details) - Restructuring Plan - USD ($) $ in Millions	3 Months Ended		9 Months Ended		36 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 41	$ 47	$ 113	$ 183
Restructuring charges recorded to date	682		682
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	800		800
Expected restructuring charges, after-tax	600		600
Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges, pre-tax	840		840
Expected restructuring charges, after-tax	$ 630		$ 630