Revenue Related to Contracts With Customers - Disaggregated revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 20,502	$ 20,705	$ 23,838
U.S.
Disaggregation of Revenue [Line Items]
Revenues	4,497	4,638	6,188
Non-U.S.
Disaggregation of Revenue [Line Items]
Revenues	$ 16,005	$ 16,067	$ 17,650