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Contingencies - Additional Information (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 31, 2017 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Sep. 30, 2018 USD ($) LegalMatter | Sep. 30, 2018 USD ($) LegalMatter Vendor | Sep. 30, 2017 USD ($) | Dec. 31, 2017 USD ($) LegalMatter | Dec. 31, 2016 USD ($) LegalMatter
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Loss contingency, years of activity |  |  |  |  |  | 5 years |  |  |
Number of insurance carriers | Vendor |  |  |  |  |  | 20 |  |  |
Insurance receivables |  |  |  |  | $ 61,800,000 | $ 61,800,000 |  | $ 134,700,000 | $ 159,900,000
Insurance receivables, current |  |  |  |  | 12,500,000 | 12,500,000 |  | 11,600,000 |
Insurance receivables, noncurrent |  |  |  |  | 49,300,000 | 49,300,000 |  | 123,100,000 |
Notes receivable from insurance companies |  |  |  |  | 64,200,000 | 64,200,000 |  | 76,900,000 | $ 67,300,000
Notes receivable from insurance companies, current |  |  |  |  | 3,525,000 | 3,525,000 |  | 17,333,000 |
Notes Receivables from Insurance Companies, Noncurrent |  |  |  |  | 60,700,000 | 60,700,000 |  | 59,600,000 |
Product warranty expense |  |  |  |  |  | 7,900,000 | $ 9,800,000 |  |
Single Incident |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | $ 4,000,000 | 4,000,000 |  | $ 5,400,000 |
Product liability expense |  |  |  |  |  | $ 1,300,000 | 300,000 |  |
Lawsuit |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of lawsuits | LegalMatter |  |  |  |  | 1,517 | 1,517 |  | 1,420 | 1,794
Damages from Product Defects |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of lawsuits | LegalMatter |  |  |  |  | 2,392 | 2,392 |  | 2,242 | 3,023
Unasserted Claim |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | $ 103,900,000 | $ 103,900,000 |  | $ 111,100,000 |
Cumulative Trauma |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | 172,300,000 | 172,300,000 |  | 181,100,000 |
Increase (Decrease) in Self Insurance Reserve |  |  |  |  | 16,900,000 |  |  |  |
Product liability expense |  |  |  |  |  | 31,900,000 | 101,400,000 |  |
Cumulative Trauma, Reported Claims |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | 68,400,000 | 68,400,000 |  | 70,000,000 |
Claims Settled, But Not Yet Paid |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | 36,000,000 | 36,000,000 |  | 54,500,000 |
Claims Asserted But Not Yet Resolved |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | 32,400,000 | 32,400,000 |  | 15,500,000 |
Uninsured Cumulative Trauma |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability expense |  |  |  |  |  | 25,500,000 | $ 33,000,000 |  |
Other Current Liabilities | Cumulative Trauma |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  | $ 68,400,000 | 68,400,000 |  | 48,600,000 |
Other Noncurrent Liabilities | Cumulative Trauma |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Product liability accrual |  |  |  |  |  |  |  | 21,400,000 |
Settled Litigation |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Payments to resolve cumulative trauma claims |  |  |  |  |  | $ 21,400,000 |  | $ 25,200,000 |
Damages awarded | $ 75,200,000 |  |  |  |  |  |  |  |
Subsequent Event | Settled Litigation | Scenario, Forecast |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Loss Contingency Accrual, Payments |  | $ 7,100,000 | $ 7,100,000 | $ 7,100,000 |  |  |  |  |
Loss Contingency Accrual, Number of Periodic Payments |  | 4 |  |  |  |  |  |  |

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