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Retirement Benefits (Schedule of Estimated Amounts That Will Be Amortized from Accumulated Other Comprehensive in the Next Fiscal Year) (Details) $ in Millions | Dec. 31, 2018 USD ($)
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United States | Pension Plan |
Defined Benefit Plan Disclosure [Line Items] |
Net actuarial loss | $ 44
United States | Postretirement Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Net actuarial loss | 1
Foreign Plan | Pension Plan |
Defined Benefit Plan Disclosure [Line Items] |
Prior service credit | 0
Net actuarial loss | 59
Projected cost (credit) | 59
Foreign Plan | Postretirement Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Prior service credit | (2)
Net actuarial loss | 0
Projected cost (credit) | $ (2)

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- Definition Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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