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Restructuring - Expected Cost, Costs Recognized, and Costs to be Recognized - 2016 Projects (Details) - USD ($) $ in Thousands | 12 Months Ended | 16 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2017
Restructuring Cost and Reserve [Line Items] |  |  |  |
Costs charged to expense | $ 77,183 | $ 6,418 | $ 49,090 |
2018 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 98,713 |  |  |
Costs charged to expense | 78,123 | 0 |  |
Expected Remaining Costs to be Recognized at December 31, 2018 | 20,590 |  |  |
2016 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 54,422 |  |  |
Costs charged to expense | (940) |  |  | $ 54,212
Expected Remaining Costs to be Recognized at December 31, 2018 | 1,150 |  |  |
Employee Severance [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Costs charged to expense | 69,768 |  |  |
Employee Severance [Member] | 2018 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 73,778 |  |  |
Costs charged to expense | 73,778 | 0 |  |
Expected Remaining Costs to be Recognized at December 31, 2018 | 0 |  |  |
Employee Severance [Member] | 2016 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 35,845 |  |  |
Costs charged to expense | (4,010) |  |  | 39,855
Expected Remaining Costs to be Recognized at December 31, 2018 | 0 |  |  |
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Costs charged to expense | 859 |  |  |
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] | 2018 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 117 |  |  |
Costs charged to expense | 117 | 0 |  |
Expected Remaining Costs to be Recognized at December 31, 2018 | 0 |  |  |
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] | 2016 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 5,664 |  |  |
Costs charged to expense | 742 |  |  | 4,922
Expected Remaining Costs to be Recognized at December 31, 2018 | 0 |  |  |
Other Restructuring [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Costs charged to expense | 6,556 |  |  |
Other Restructuring [Member] | 2018 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 24,818 |  |  |
Costs charged to expense | 4,228 | $ 0 |  |
Expected Remaining Costs to be Recognized at December 31, 2018 | 20,590 |  |  |
Other Restructuring [Member] | 2016 Projects [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total Expected Costs at December 31, 2018 | 12,913 |  |  |
Costs charged to expense | 2,328 |  |  | $ 9,435
Expected Remaining Costs to be Recognized at December 31, 2018 | $ 1,150 |  |  |

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- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(d)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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