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Pension and Other Postretirement Benefit Plans - Net Periodic Costs Recognized in Operating Profit and Interest and Sundry (Income) Expense (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | $ 3 | $ (3)
Operating profit | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | 2 | 2
Interest and sundry (income) expense | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | 1 | (5)
United States Pension Benefits | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | 0 | (1)
United States Pension Benefits | Operating profit | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | 1 | 1
United States Pension Benefits | Interest and sundry (income) expense | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | (1) | (2)
Foreign Pension Benefits | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | 1 | 3
Foreign Pension Benefits | Operating profit | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | 2 | 1
Foreign Pension Benefits | Interest and sundry (income) expense | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net periodic cost | $ (1) | $ 2

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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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