Employee Benefit Obligations - Weighted Average Assumptions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted-average assumptions used to determine net periodic benefit cost
Pension expense		$ 189
Settlement losses		135
Forecast
Weighted-average assumptions used to determine net periodic benefit cost
Pension expense	$ 65
Defined Benefit Pension Plans
Weighted-average assumptions used to determine benefit obligations
Effect of one quarter of a percentage point reduction in the expected return on pension assets assumption, on pension expense		13
Effect of quarter of a percentage point reduction in the discount rate applied to the pension liability, on pension expense		3
Weighted-average assumptions used to determine net periodic benefit cost
Settlement losses		135	$ 120	$ 8
Market related value of plan assets used to calculate expected return		$ 5,633	$ 5,573	$ 5,375
United States | Defined Benefit Pension Plans
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)		2.87%	2.49%	3.35%
Rate of compensation increase (as a percent)		4.48%	4.05%	4.03%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)		2.49%	3.35%	4.41%
Rate of compensation increase (as a percent)		4.05%	4.03%	4.02%
Expected long-term rate of return on assets (as a percent)		6.32%	6.00%	5.58%
Settlement losses		$ 135	$ 120
Non U.S. | Defined Benefit Pension Plans
Weighted-average assumptions used to determine net periodic benefit cost
Settlement losses				$ 8
United Kingdom | Defined Benefit Pension Plans
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)		1.81%	1.39%	2.07%
Rate of compensation increase (as a percent)		3.50%	3.50%	3.50%
Pension increase (as a percent)		3.64%	3.19%	3.22%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)		1.39%	2.07%	2.90%
Rate of compensation increase (as a percent)		3.50%	3.50%	3.50%
Pension increase (as a percent)		3.19%	3.22%	3.45%
Expected long-term rate of return on assets (as a percent)		1.74%	2.57%	3.40%
Germany | Defined Benefit Pension Plans
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)		1.12%	0.80%	1.11%
Rate of compensation increase (as a percent)		2.50%	2.50%	2.50%
Pension increase (as a percent)		1.70%	1.50%	1.50%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)		0.80%	1.11%	1.74%
Rate of compensation increase (as a percent)		2.50%	2.50%	2.50%
Pension increase (as a percent)		1.50%	1.50%	1.50%