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Pensions and Other Postretirement Benefit Plans (Schedule of Asset Allocation) (Details) | Dec. 31, 2017 | Dec. 31, 2016
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United States [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  | 100.00% |
Percentage of plan assets at plan measurement date |  | 100.00% | 100.00%
United States [Member] | Common Stocks and Equity Funds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  |  |
Percentage of plan assets at plan measurement date |  | 1.00% | 2.00%
United States [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  | 100.00% |
Percentage of plan assets at plan measurement date |  | 95.00% | 92.00%
United States [Member] | Real Estate [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  |  |
Percentage of plan assets at plan measurement date |  | 4.00% | 5.00%
United States [Member] | Other [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | [1] |  |
Percentage of plan assets at plan measurement date | [1] |  | 1.00%
Non-U.S. Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  | 100.00% |
Percentage of plan assets at plan measurement date |  | 100.00% | 100.00%
Non-U.S. Pension Plans [Member] | Common Stocks and Equity Funds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  | 32.00% |
Percentage of plan assets at plan measurement date |  | 30.00% | 33.00%
Non-U.S. Pension Plans [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  | 64.00% |
Percentage of plan assets at plan measurement date |  | 64.00% | 61.00%
Non-U.S. Pension Plans [Member] | Real Estate [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation |  | 1.00% |
Percentage of plan assets at plan measurement date |  | 1.00% |
Non-U.S. Pension Plans [Member] | Other [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | [1] | 3.00% |
Percentage of plan assets at plan measurement date | [1] | 5.00% | 6.00%
[1] | Other includes hedged equity and absolute return strategies, and private equity. The Company has procedures to closely monitor the performance of these investments and compares asset valuations to audited financial statements of the funds.

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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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