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Retirement Benefits - Weighted Average Assumptions Used in the Measurement Of Benefit Obligation (Details) | Dec. 31, 2016 | Dec. 31, 2015
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U.S. Plans |  |
Schedule of Benefit Obligations Weighted Average Assumptions [Line Items] |  |
Discount rate | 3.91% | 4.12%
Rate of compensation increase | 4.00% | 4.00%
Non-U.S. Plans |  |
Schedule of Benefit Obligations Weighted Average Assumptions [Line Items] |  |
Discount rate | 1.76% | 2.99%
Rate of compensation increase | 2.29% | 2.98%

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- Definition Schedule of Benefit Obligations Weighted Average Assumptions [Line Items] + References No definition available. + Details
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- Definition The interest rate used to adjust for the time value of money for the plan. + 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 (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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