Derivative Instruments - Schedule of Derivative Instruments Measured at Fair Value in Statement of Financial Position (Details) $ in Millions	Sep. 30, 2015 USD ($)
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	$ 977.4
Derivative Liability, Fair Value	(29.4)
Interest rate swaps | Not designated as hedges | Other current liabilities Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	11.2
Level 2 | Cross-currency swap agreements | Designated as hedges | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	730.9
Derivative Liability, Fair Value	(20.4)
Level 2 | Interest rate swaps | Designated as hedges | Other current liabilities Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	235.3
Derivative Liability, Fair Value	(8.3)
Level 2 | Interest rate swaps | Not designated as hedges | Other current liabilities Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	11.2
Derivative Liability, Fair Value	$ (0.7)