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Restructuring Related Balance Sheet Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | $ 47,970 |  |
Costs incurred and charged to expense | 6,418 | $ 49,090 | $ (7,263)
Cash receipts (payments) | (17,402) |  |
Net assets disposed and impaired | 1,407 |  |
Effect of change in exchange rates | 4,546 |  |
Restructuring Reserve - Ending Balance | 40,125 | 47,970 |
Employee severance costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | 45,368 |  |
Costs incurred and charged to expense | 169 |  |
Cash receipts (payments) | (12,423) |  |
Net assets disposed and impaired | 0 |  |
Effect of change in exchange rates | 4,540 |  |
Restructuring Reserve - Ending Balance | 37,654 | 45,368 |
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | 0 |  |
Costs incurred and charged to expense | (2,297) |  |
Cash receipts (payments) | 3,704 |  |
Net assets disposed and impaired | 1,407 |  |
Effect of change in exchange rates | 0 |  |
Restructuring Reserve - Ending Balance | 0 | 0 |
Other restructuring costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | 2,602 |  |
Costs incurred and charged to expense | 8,546 |  |
Cash receipts (payments) | (8,683) |  |
Net assets disposed and impaired | 0 |  |
Effect of change in exchange rates | 6 |  |
Restructuring Reserve - Ending Balance | $ 2,471 | $ 2,602 |

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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