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Retirement Plans and Other Retiree Benefits - Schedule of Target Asset Allocation (Details) | Dec. 31, 2017
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United States |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 100.00%
United States | Equity securities |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 27.00%
United States | Fixed income securities |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 53.00%
United States | Real estate and other investments |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 20.00%
International |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 100.00%
International | Equity securities |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 39.00%
International | Fixed income securities |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 41.00%
International | Real estate and other investments |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |
Target asset allocation | 20.00%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one 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 (d)(5)(i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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