Pension and Postretirement Benefit Plans - Future Benefit Payments (Details) $ in Millions	Dec. 31, 2023 USD ($)
U.S. Pension Plans \| United States
Future Pension and Postretirement Benefit Payments
2024	$ 1,104
2025	1,105
2026	1,096
2027	1,088
2028	1,078
Next five years	5,064
U.S. Pension Plans \| International
Future Pension and Postretirement Benefit Payments
2024	277
2025	287
2026	297
2027	311
2028	320
Next five years	1,654
Postretirement Benefits
Future Pension and Postretirement Benefit Payments
2024	144
2025	155
2026	158
2027	160
2028	162
Next five years	$ 745

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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