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Postretirement benefits Schedule of Net Funded Status (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Pension Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Service Cost $ 4 $ 4 $ 60
Pension Plan [Member] | Non - U.S.      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, beginning of year 1,199 1,042  
Service Cost 4 4 11
Interest Cost 19 22 27
Actuarial Loss (gain) (47) 135  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (33) (31)  
Curtailments 0 (2)  
Settlements, Benefit obligations 0 0  
Foreign currency revaluation, benefit obligations (20) 29  
Benefit Obligation, end of year 1,122 1,199 1,042
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Plan assets at fair value, beginning of year 1,284 1,141  
Actual Return on Plan Assets 83 126  
Employer Contributions 8 19  
Benefits Paid (33) (31)  
Settlements 0 0  
Foreign currency revaluation, Plan Assets (24) 29  
Plan assets at fair value, end of year 1,318 1,284 1,141
Defined Benefit Plan, Funded (Unfunded) Status of Plan 196 85  
Assets for Plan Benefits, Defined Benefit Plan 214 85  
Liability, Defined Benefit Plan (18) 0  
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position 196 85  
Pension Plan [Member] | UNITED STATES      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, beginning of year 3,967 3,569  
Service Cost 0 0 49
Interest Cost 70 99 118
Actuarial Loss (gain) (161) 441  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (133) (127)  
Curtailments 0 0  
Settlements, Benefit obligations (11) (15)  
Foreign currency revaluation, benefit obligations 0 0  
Benefit Obligation, end of year 3,732 3,967 3,569
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Plan assets at fair value, beginning of year 3,739 3,301  
Actual Return on Plan Assets 543 563  
Employer Contributions 13 17  
Benefits Paid (133) (127)  
Settlements (11) (15)  
Foreign currency revaluation, Plan Assets 0 0  
Plan assets at fair value, end of year 4,151 3,739 3,301
Defined Benefit Plan, Funded (Unfunded) Status of Plan 419 (228)  
Assets for Plan Benefits, Defined Benefit Plan 492 0  
Liability, Defined Benefit Plan (73) (228)  
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position 419 (228)  
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, beginning of year 86 103  
Service Cost 1 1 0
Interest Cost 1 2 4
Actuarial Loss (gain) (10) 1  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (15) (20)  
Curtailments 0 0  
Settlements, Benefit obligations 0 0  
Foreign currency revaluation, benefit obligations (1) (1)  
Benefit Obligation, end of year 62 86 103
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Plan assets at fair value, beginning of year 120 152  
Actual Return on Plan Assets (1) 6  
Employer Contributions 15 1  
Benefits Paid (15) (39)  
Settlements 0 0  
Foreign currency revaluation, Plan Assets 0 0  
Plan assets at fair value, end of year 119 120 $ 152
Defined Benefit Plan, Funded (Unfunded) Status of Plan 57 34  
Assets for Plan Benefits, Defined Benefit Plan 77 34  
Liability, Defined Benefit Plan (20) 0  
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position $ 57 $ 34