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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, 2018 | Dec. 31, 2017
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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) | 47.80% | 48.00%
Equity Securities | Non-US Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 36.10% | 35.60%
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) | 51.40% |
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) | 0.80% | 3.70%
Other | Non-US Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation (as a percent) | 32.30% | 32.80%
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/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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