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Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Parenthetical) (Detail) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Other Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash flow swaps designated as hedges | $ 2.4 | $ 2.8
Other Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash flow swaps designated as hedges | 1.7 | 3.7
Cash flow swaps not designated as hedges | 0.1 | 0.3
Other Long-Term Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash flow swaps designated as hedges | $ 1.9 | $ 2.4

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