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Retirement Benefits - Status of the Company Plans (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Components of prepaid (accrued) pension cost:      
Non-current benefit asset $ 164,000,000 $ 365,000,000  
Postretirement Health Care Benefits Plan      
Change in benefit obligation:      
Benefit obligation at January 1 78,000,000 71,000,000  
Service cost 0 0 $ 0
Interest cost 2,000,000 1,000,000 2,000,000
Plan amendments 46,000,000 0  
Actuarial loss (gain) (12,000,000) 10,000,000  
Foreign exchange valuation adjustment 0 0  
Benefit payments (11,000,000) (4,000,000)  
Benefit obligation at December 31 103,000,000 78,000,000 71,000,000
Change in plan assets:      
Fair value at January 1 186,000,000 181,000,000  
Return on plan assets (41,000,000) 9,000,000  
Company contributions 0 0  
Foreign exchange valuation adjustment 0 0  
Benefit payments (11,000,000) (4,000,000)  
Fair value at December 31 134,000,000 186,000,000 181,000,000
Funded status of the plan 31,000,000 108,000,000  
Unrecognized net loss 70,000,000 31,000,000  
Unrecognized prior service benefit (cost) 46,000,000 0  
Prepaid pension cost 147,000,000 139,000,000  
Components of prepaid (accrued) pension cost:      
Current benefit liability 0 0  
Non-current benefit liability 0 0  
Non-current benefit asset 31,000,000 108,000,000  
Deferred income taxes 32,000,000 11,000,000  
Accumulated other comprehensive loss 84,000,000 20,000,000  
Prepaid pension cost 147,000,000 139,000,000  
United States | Pension Benefit Plans      
Change in benefit obligation:      
Benefit obligation at January 1 5,140,000,000 5,226,000,000  
Service cost 0 0 0
Interest cost 128,000,000 115,000,000 144,000,000
Plan amendments 0 0  
Actuarial loss (gain) (1,329,000,000) (71,000,000)  
Foreign exchange valuation adjustment 0 0  
Benefit payments (130,000,000) (130,000,000)  
Benefit obligation at December 31 3,809,000,000 5,140,000,000 5,226,000,000
Change in plan assets:      
Fair value at January 1 4,157,000,000 4,083,000,000  
Return on plan assets (954,000,000) 201,000,000  
Company contributions 3,000,000 3,000,000  
Foreign exchange valuation adjustment 0 0  
Benefit payments (130,000,000) (130,000,000)  
Fair value at December 31 3,076,000,000 4,157,000,000 4,083,000,000
Funded status of the plan (733,000,000) (983,000,000)  
Unrecognized net loss 1,689,000,000 1,871,000,000  
Unrecognized prior service benefit (cost) 0 0  
Prepaid pension cost 956,000,000 888,000,000  
Components of prepaid (accrued) pension cost:      
Current benefit liability (3,000,000) (3,000,000)  
Non-current benefit liability (730,000,000) (980,000,000)  
Non-current benefit asset 0 0  
Deferred income taxes 403,000,000 454,000,000  
Accumulated other comprehensive loss 1,286,000,000 1,417,000,000  
Prepaid pension cost 956,000,000 888,000,000  
Non U.S. | Pension Benefit Plans      
Change in benefit obligation:      
Benefit obligation at January 1 1,935,000,000 2,058,000,000  
Service cost 1,000,000 1,000,000 2,000,000
Interest cost 29,000,000 21,000,000 29,000,000
Plan amendments 0 0  
Actuarial loss (gain) (534,000,000) (61,000,000)  
Foreign exchange valuation adjustment (174,000,000) (31,000,000)  
Benefit payments (50,000,000) (53,000,000)  
Benefit obligation at December 31 1,207,000,000 1,935,000,000 2,058,000,000
Change in plan assets:      
Fair value at January 1 1,870,000,000 1,880,000,000  
Return on plan assets (555,000,000) 43,000,000  
Company contributions 8,000,000 9,000,000  
Foreign exchange valuation adjustment (181,000,000) (9,000,000)  
Benefit payments (50,000,000) (53,000,000)  
Fair value at December 31 1,092,000,000 1,870,000,000 $ 1,880,000,000
Funded status of the plan (115,000,000) (65,000,000)  
Unrecognized net loss 758,000,000 655,000,000  
Unrecognized prior service benefit (cost) (70,000,000) (77,000,000)  
Prepaid pension cost 573,000,000 513,000,000  
Components of prepaid (accrued) pension cost:      
Current benefit liability 0 0  
Non-current benefit liability (185,000,000) (297,000,000)  
Non-current benefit asset 70,000,000 232,000,000  
Deferred income taxes 83,000,000 61,000,000  
Accumulated other comprehensive loss 605,000,000 517,000,000  
Prepaid pension cost $ 573,000,000 $ 513,000,000