Pensions Net Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of Net Periodic Benefit Cost (Income) [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible List]	Other income/(expense)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible List]	Other income/(expense)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible List]	Other income/(expense)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible List]	Other income/(expense)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement and Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible List]	Other income/(expense)
Pension Plans, Defined Benefit [Member] | United States
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost (Income) [Abstract]
Discount rate - interest cost	2.33%	3.13%	4.22%
Expected long-term rate of return on assets	4.25%	5.00%	5.76%
Components of Net Periodic Benefit Cost (Income) [Abstract]
Interest cost on benefit obligation	$ 23	$ 35	$ 45
Expected return on plan assets	(40)	(47)	(55)
Amortization of actuarial net loss	7	6	2
Net periodic benefit cost (income)	$ (10)	$ (6)	$ (8)
Pension Plans, Defined Benefit [Member] | Foreign Plan [Member]
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost (Income) [Abstract]
Discount rate - service cost	0.65%	1.21%	1.97%
Discount rate - interest cost	0.80%	1.44%	2.06%
Average rate of increase in employee compensation	2.30%	2.27%	2.47%
Expected long-term rate of return on assets	2.02%	2.33%	3.25%
Components of Net Periodic Benefit Cost (Income) [Abstract]
Service cost	$ 27	$ 24	$ 23
Interest cost on benefit obligation	11	18	24
Expected return on plan assets	(19)	(19)	(30)
Amortization of actuarial net loss	12	10	6
Amortization of prior service benefit		(1)	(1)
Settlement/curtailment loss		8	4
Net periodic benefit cost (income)	$ 31	$ 40	$ 26