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Fair Value Measurements and Other Financial Instruments - Carrying Amounts and Estimated Fair Values of Debt (Detail)
€ in Millions, $ in Millions
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2015
EUR (€)
Dec. 31, 2014
USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Other foreign loans, Carrying Amount $ 78.9 $ 165.7      
Other foreign loans, Fair Value 79.2 165.8      
Other domestic loans, Carrying Amount 21.4 87.9      
Other domestic loans, Fair Value 21.3 88.2      
Total debt, Carrying Amount 4,359.0 4,561.6      
Total debt, Fair Value 4,546.4 4,697.1      
6.50% Senior Notes Due December 2020 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 423.1 422.7      
Senior Notes, Fair Value 477.3 473.7      
4.875% Senior Notes due December 2022 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 419.6 418.9     $ 425.0
Senior Notes, Fair Value 437.6 426.5      
5.25% Senior Notes Due April 2023 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 419.7 419.0      
Senior Notes, Fair Value 441.1 436.2      
4.50% Senior Notes due September 2023 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 416.7 432.9   € 400  
Senior Notes, Fair Value 453.4 452.7      
5.125% Senior Notes due December 2024 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 420.2 419.7     $ 425.0
Senior Notes, Fair Value 437.3 427.6      
5.50% Senior Notes due September 2025 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 396.4 396.1 $ 400.0    
Senior Notes, Fair Value 418.8 410.2      
6.875% Senior Notes Due July 2033 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Senior Notes, Carrying Amount 445.3 445.2      
Senior Notes, Fair Value 462.7 462.7      
Term Loan A Due July 2017 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Credit Facility, Carrying Amount 249.9 249.7      
Credit Facility, Fair Value 249.9 249.7      
Term Loan A Due July 2019 [Member]          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Credit Facility, Carrying Amount 1,067.8 1,103.8      
Credit Facility, Fair Value $ 1,067.8 $ 1,103.8