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Environmental Obligations (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 28, 2017 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Dec. 31, 2016
Accrual for Environmental Loss Contingencies [Roll Forward] |  |  |  |  |  |  |
Environmental reserves, long-term |  |  |  |  |  | $ 305.1 | $ 306.4
Environmental loss contingencies, net of expected recoveries, in excess of accrual |  |  |  | $ 240.0 |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Environmental charges, net |  | $ 2.7 | $ 8.1 | 8.3 | $ 17.1 |  |
Environmental provision, net |  | 31.9 | 13.3 | 52.7 | 29.6 |  |
Middleport Litigation | Pending Litigation |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Increase in reserve |  | 25.0 |  |  |  |  |
Pocatello Tribal Litigation | Pending Litigation |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Annual environmental remediation fee | $ 1.5 |  |  |  |  |  |
Continuing Operations |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Environmental charges, net |  | 2.7 | 8.1 | 8.3 | 17.1 |  |
Discontinued Operations |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Environmental charges, net |  | 29.2 | 5.2 | 44.4 | 12.5 |  |
Other Assets Including Long-term Receivables, Net |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Environmental Recoveries, beginning |  |  |  | 27.2 |  |  |
Increase in Recoveries |  |  |  | 0.4 |  |  |
Cash Received |  |  |  | (10.8) |  |  |
Environmental Recoveries, ending |  | 16.8 |  | 16.8 |  |  |
Other Liabilities |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Environmental remediation provision, net |  | 31.9 | 13.3 | 53.1 | 31.4 |  |
Other Assets |  |  |  |  |  |  |
Recorded Recoveries [Roll Forward] |  |  |  |  |  |  |
Environmental remediation provision, net |  | 0.0 | $ 0.0 | (0.4) | $ (1.8) |  |
Gross |  |  |  |  |  |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |  |  |  |  |  |
Total environmental reserves at December 31, 2016 |  |  |  | 378.1 |  |  |
Provision/(benefit) |  |  |  | 53.1 |  |  |
(Spending)/recoveries |  |  |  | (41.5) |  |  |
Foreign currency translation adjustments |  |  |  | 5.6 |  |  |
Net change |  |  |  | 17.2 |  |  |
Total environmental reserves at September 30, 2017 |  | 395.3 |  | 395.3 |  |  |
Environmental reserves, current |  |  |  |  |  | 80.0 |
Environmental reserves, long-term |  |  |  |  |  | 315.3 |
Total environmental reserves, net of recoveries at end of period |  | 395.3 |  | 378.1 |  | 395.3 | 378.1
Recoveries |  |  |  |  |  |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |  |  |  |  |  |
Total environmental reserves at December 31, 2016 |  |  |  | 11.4 |  |  |
Provision/(benefit) |  |  |  | 0.0 |  |  |
(Spending)/recoveries |  |  |  | 0.0 |  |  |
Foreign currency translation adjustments |  |  |  | 0.0 |  |  |
Net change |  |  |  | 0.0 |  |  |
Total environmental reserves at September 30, 2017 |  | 11.4 |  | 11.4 |  |  |
Environmental reserves, current |  |  |  |  |  | 1.2 |
Environmental reserves, long-term |  |  |  |  |  | 10.2 |
Total environmental reserves, net of recoveries at end of period |  | 11.4 |  | 11.4 |  | 11.4 | 11.4
Net |  |  |  |  |  |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |  |  |  |  |  |
Total environmental reserves at December 31, 2016 |  |  |  | 366.7 |  |  |
Provision/(benefit) |  |  |  | 53.1 |  |  |
(Spending)/recoveries |  |  |  | (41.5) |  |  |
Foreign currency translation adjustments |  |  |  | 5.6 |  |  |
Net change |  |  |  | 17.2 |  |  |
Total environmental reserves at September 30, 2017 |  | 383.9 |  | 383.9 |  |  |
Environmental reserves, current |  |  |  |  |  | 78.8 |
Environmental reserves, long-term |  |  |  |  |  | 305.1 |
Total environmental reserves, net of recoveries at end of period |  | $ 383.9 |  | $ 366.7 |  | $ 383.9 | $ 366.7

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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