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Employee Benefit Plans - Schedule of the Actual Allocations for the Pension Assets and Target Allocations by Asset Class (Details) | Dec. 31, 2017 | Dec. 31, 2016
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U.S. Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 100.00% | 100.00%
Non-US Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 100.00% | 100.00%
Equity Securities | U.S. Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 50.00% |
Weighted-average asset allocation (as a percent) | 48.00% | 25.00%
Equity Securities | Non-US Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 35.60% | 33.70%
Equity Securities | Non-US Pension Plans | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 0.00% |
Equity Securities | Non-US Pension Plans | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 25.00% |
Debt Securities | U.S. Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 50.00% |
Weighted-average asset allocation (as a percent) | 48.30% |
Debt Securities | Non-US Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 31.60% |
Debt Securities | Non-US Pension Plans | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 0.00% |
Debt Securities | Non-US Pension Plans | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 100.00% |
Other | U.S. Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 0.00% |
Weighted-average asset allocation (as a percent) | 3.70% | 0.60%
Other | Non-US Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 32.80% | 35.20%
Other | Non-US Pension Plans | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 0.00% |
Other | Non-US Pension Plans | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocations (as a percent) | 100.00% |

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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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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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