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Restructuring - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Oct. 03, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and settlement loss |  |  | $ 144,900,000 | $ 183,600,000 | $ 88,000,000.0
Restructuring charges | $ 8,100,000 |  | 132,000,000.0 | 194,200,000 | 88,000,000.0
Defined benefit plan, loss due to settlement | 2,700,000 | $ 10,200,000 | 12,900,000 |  |
Impairment of long-lived assets to be disposed of |  |  | 21,300,000 | 8,700,000 | 4,700,000
Impairment of right of use assets |  |  | 2,000,000.0 | 800,000 |
Expected restructuring costs | $ 18,000,000 |  | 18,000,000 |  |
Cost of sales |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | 122,300,000 | 173,800,000 | 63,700,000
Selling, General and Administrative Expenses |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | 16,400,000 | 16,400,000 | 24,000,000.0
Other Income and Expense, Net |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | 6,200,000 | 6,600,000 | 300,000
Employee termination benefits |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | 104,200,000 | 167,800,000 | 74,500,000
Asset impairments |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | 23,300,000 | 9,500,000 | 4,700,000
Contract termination costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | 2,000,000.0 | 3,000,000.0 | 1,500,000
Other related costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | $ 2,500,000 | 13,900,000 | $ 7,300,000
Pension Benefit Plan Curtailment Gain |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  |  | $ 10,600,000 |

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=109237824&loc=SL108413299-114919 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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