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Fair Value Measurements and Other Financial Instruments - Carrying Amounts and Estimated Fair Values of Debt (Detail) - USD ($) $ in Millions | Mar. 31, 2017 | Dec. 31, 2016
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Carrying Amount [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Other foreign loans | $ 88.0 | $ 78.9
Other domestic loans | 37.2 | 21.4
Total debt | 4,382.7 | 4,359.0
Carrying Amount [Member] | Continuing Operations [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total debt | 4,156.1 | 4,142.6
Carrying Amount [Member] | Discontinued Operations Held for Sale [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total debt | 226.6 | 216.4
Carrying Amount [Member] | 6.50% Senior Notes Due December 2020 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 423.2 | 423.1
Carrying Amount [Member] | 4.875% Senior Notes due December 2022 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 419.8 | 419.6
Carrying Amount [Member] | 5.25% Senior Notes Due April 2023 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 419.9 | 419.7
Carrying Amount [Member] | 4.50% Senior Notes due September 2023 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 423.1 | 416.7
Carrying Amount [Member] | 5.125% Senior Notes due December 2024 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 420.3 | 420.2
Carrying Amount [Member] | 5.50% Senior Notes due September 2025 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 396.5 | 396.4
Carrying Amount [Member] | 6.875% Senior Notes Due July 2033 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 445.3 | 445.3
Fair Value [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Other foreign loans | 88.2 | 79.2
Other domestic loans | 37.0 | 21.3
Total debt | 4,620.1 | 4,546.4
Fair Value [Member] | Continuing Operations [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total debt | 4,393.5 | 4,330.0
Fair Value [Member] | Discontinued Operations Held for Sale [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total debt | 226.6 | 216.4
Fair Value [Member] | 6.50% Senior Notes Due December 2020 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 475.3 | 477.3
Fair Value [Member] | 4.875% Senior Notes due December 2022 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 442.0 | 437.6
Fair Value [Member] | 5.25% Senior Notes Due April 2023 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 444.3 | 441.1
Fair Value [Member] | 4.50% Senior Notes due September 2023 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 469.6 | 453.4
Fair Value [Member] | 5.125% Senior Notes due December 2024 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 442.1 | 437.3
Fair Value [Member] | 5.50% Senior Notes due September 2025 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 423.2 | 418.8
Fair Value [Member] | 6.875% Senior Notes Due July 2033 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Senior Notes | 489.0 | 462.7
Term Loan A Due July 2017 [Member] | Carrying Amount [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Credit Facility | 249.9 | 249.9
Term Loan A Due July 2017 [Member] | Fair Value [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Credit Facility | 249.9 | 249.9
Term Loan A Due July 2019 [Member] | Carrying Amount [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Credit Facility | 1,059.5 | 1,067.8
Term Loan A Due July 2019 [Member] | Fair Value [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Credit Facility | $ 1,059.5 | $ 1,067.8

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