Postretirement Benefit Plans - Benefit Obligations and Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in plan assets
Funded status at end of year	$ 61	$ 303
U.S. \| Defined Benefit
Change in plan benefit obligation
Benefit obligation at beginning of year:	895	1,097
Service cost	15	21	$ 18
Interest cost	29	30	31
Participant contributions	0	0
Benefits paid	(12)	(12)
Settlements	(309)	(162)
Curtailments	0	0
Actuarial loss (gain)	(97)	(79)
Effects of exchange rate changes	0	0
Benefit obligation at end of year	521	895	1,097
Change in plan assets
Fair value of plan assets at beginning of year:	934	1,061
Actual return on plan assets	(205)	37
Participant contributions	0	0
Benefits paid	(12)	(12)
Settlements	(309)	(162)
Effects of exchange rate changes	0	0
Fair value of plan assets at end of year	421	934	1,061
Funded status at end of year	(100)	39
U.S. \| Defined Benefit \| Qualified Plan
Change in plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer	0	0
U.S. \| Defined Benefit \| Nonqualified Plan
Change in plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer	13	10
U.S. \| Retiree Health Care
Change in plan benefit obligation
Benefit obligation at beginning of year:	360	389
Service cost	3	3	3
Interest cost	11	10	13
Participant contributions	15	14
Benefits paid	(41)	(38)
Settlements	0	0
Curtailments	0	0
Actuarial loss (gain)	(74)	(18)
Effects of exchange rate changes	0	0
Benefit obligation at end of year	274	360	389
Change in plan assets
Fair value of plan assets at beginning of year:	385	389
Actual return on plan assets	(80)	19
Participant contributions	15	14
Benefits paid	(41)	(38)
Settlements	0	0
Effects of exchange rate changes	0	0
Fair value of plan assets at end of year	280	385	389
Funded status at end of year	6	25
U.S. \| Retiree Health Care \| Qualified Plan
Change in plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer	1	1
U.S. \| Retiree Health Care \| Nonqualified Plan
Change in plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer	0	0
Non-U.S. \| Defined Benefit
Change in plan benefit obligation
Benefit obligation at beginning of year:	2,574	2,868
Service cost	25	36	34
Interest cost	33	37	38
Participant contributions	5	9
Benefits paid	(86)	(101)
Settlements	(91)	(12)
Curtailments	(4)	0
Actuarial loss (gain)	(547)	(111)
Effects of exchange rate changes	(242)	(152)
Benefit obligation at end of year	1,667	2,574	2,868
Change in plan assets
Fair value of plan assets at beginning of year:	2,813	3,008
Actual return on plan assets	(557)	75
Participant contributions	5	9
Benefits paid	(86)	(101)
Settlements	(91)	(12)
Effects of exchange rate changes	(271)	(173)
Fair value of plan assets at end of year	1,822	2,813	$ 3,008
Funded status at end of year	155	239
Non-U.S. \| Defined Benefit \| Qualified Plan
Change in plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer	9	7
Non-U.S. \| Defined Benefit \| Nonqualified Plan
Change in plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0	$ 0

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of contributions received by defined benefit plan from participant which increase benefit obligation.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of (increase) decrease in benefit obligation of defined benefit plan from event reducing expected years of future service of present employees or eliminating accrual of benefits for some or all future services of present employees.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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- Definition

Amount of foreign currency translation gain (loss) which (increases) decreases benefit obligation of defined benefit plan.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of contributions received by defined benefit plan from participant which increases plan assets.

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Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

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Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract.

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