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Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 4 Months Ended | 6 Months Ended | 12 Months Ended | 18 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2015 USD ($) LegalMatter | Jun. 30, 2014 USD ($) | Jan. 31, 2015 USD ($) | Jun. 30, 2015 USD ($) LegalMatter Vendor | Jun. 30, 2014 USD ($) | Dec. 31, 2014 USD ($) LegalMatter | Jun. 30, 2015 USD ($) LegalMatter | Dec. 31, 2013 USD ($) LegalMatter
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of lawsuits | LegalMatter | 2,047 |  |  | 2,047 |  | 2,326 | 2,047 | 2,840
Loss contingency, years of activity |  |  |  | 5 years |  |  |  |
Number of insurance carriers | Vendor |  |  |  | 20 |  |  |  |
Increase in insurance settlements receivable |  |  |  |  |  |  | $ 94.2 |
Insurance receivables | $ 219.0 |  |  | $ 219.0 |  | $ 220.5 | 219.0 | $ 124.8
Insurance receivables, current | 2.0 |  |  | 2.0 |  | 2.0 | 2.0 |
Insurance receivables, noncurrent | 217.0 |  |  | 217.0 |  | 218.5 | 217.0 |
Single Incident |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Reserves for product liability claims | 3.4 |  |  | 3.4 |  | 3.5 | 3.4 |
Product liability expense |  |  |  | 0.7 | $ 0.6 |  |  |
Cumulative Trauma |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Product liability expense |  |  |  |  |  | 169.6 |  |
Litigation settlement amount |  |  | $ 71.8 |  |  |  |  |
Loss contingency accrual, product liability, net | 72.3 |  |  | $ 72.3 |  | 74.9 | $ 72.3 |
Uninsured Cumulative Trauma |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Product liability expense | $ 0.3 | $ 2.2 |  |  |  |  |  |
Other Noncurrent Liabilities | Cumulative Trauma |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency accrual, product liability, net |  |  |  |  |  | $ 35.1 |  |

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