Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related cost	$ 3,900		$ 3,900
Estimate of cumulative pre tax costs that will result in cash outlays			70.00%
Estimate of cumulative pre tax costs that will be noncash			30.00%
Total pretax restructuring costs	236	$ 258	$ 333	$ 384
Cumulative costs since program inception	$ 3,700		$ 3,700
Forecast
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related cost					$ 550