Pension, Other Postretirement Benefits and Savings Plans - Estimated Future Benefit Payments (Details) $ in Millions	Dec. 31, 2017 USD ($)
Other Postretirement Benefits
Without Medicare Part D Subsidy, Fiscal Year Maturity
2018	$ 21
2019	21
2020	20
2021	20
2022	19
2023-2027	91
United States \| Pension Plan
Without Medicare Part D Subsidy, Fiscal Year Maturity
2018	426
2019	405
2020	387
2021	382
2022	366
2023-2027	1,735
Non-U.S. \| Pension Plan
Without Medicare Part D Subsidy, Fiscal Year Maturity
2018	125
2019	122
2020	124
2021	126
2022	132
2023-2027	$ 708

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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

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

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

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

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

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