Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Feb. 03, 2010	Oct. 18, 2010	Oct. 19, 2012
Financial assets and liabilities accounted for at fair value on a recurring basis
Total current assets	$ 1,251.2us-gaap_AssetsCurrent	$ 1,186.1us-gaap_AssetsCurrent
Total current liabilities	934.4us-gaap_LiabilitiesCurrent	1,011.3us-gaap_LiabilitiesCurrent
Total non-current liabilities	2,123.7us-gaap_LiabilitiesNoncurrent	1,981.2us-gaap_LiabilitiesNoncurrent
Senior notes due 2018
Financial assets and liabilities accounted for at fair value on a recurring basis
Interest rate, stated percentage (as a percent)			9.50%
Senior notes 8.50% due 2020
Financial assets and liabilities accounted for at fair value on a recurring basis
Interest rate, stated percentage (as a percent)				8.50%
Debt instruments at fair value	646.5	651.6
Senior notes 5.875% due 2022
Financial assets and liabilities accounted for at fair value on a recurring basis
Interest rate, stated percentage (as a percent)					5.875%
Debt instruments at fair value	324.0	309.1
Term loan A
Financial assets and liabilities accounted for at fair value on a recurring basis
Debt instruments at fair value	326.7	327.8
Term loan B
Financial assets and liabilities accounted for at fair value on a recurring basis
Debt instruments at fair value	166.3	165.0
Fair value measurement on recurring basis \| Level 1
Financial assets and liabilities accounted for at fair value on a recurring basis
Total current assets	0	0
Derivative Asset, Noncurrent		0
Total current liabilities	0	0
Total non-current liabilities	0	0
Fair value measurement on recurring basis \| Level 1 \| Foreign currency exchange contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	0	0
Derivative liabilities, current	0	0
Fair value measurement on recurring basis \| Level 1 \| Commodity contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	0	0
Derivative liabilities, current	0	0
Non-current derivative liabilities at fair value	0	0
Fair value measurement on recurring basis \| Level 1 \| Interest rate swap - Fixed-to-float [Domain]
Financial assets and liabilities accounted for at fair value on a recurring basis
Non-current derivative liabilities at fair value	0
Fair value measurement on recurring basis \| Level 1 \| Interest rate swap contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative Asset, Noncurrent		0
Derivative liabilities, current		0
Non-current derivative liabilities at fair value	0
Fair value measurement on recurring basis \| Level 1 \| Interest Rate Swap [Member]
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative liabilities, current	0
Non-current derivative liabilities at fair value		0
Fair value measurement on recurring basis \| Level 2
Financial assets and liabilities accounted for at fair value on a recurring basis
Total current assets	1.2	2.1
Derivative Asset, Noncurrent		0.8
Total current liabilities	15.4	11.2
Total non-current liabilities	2.5	4.7
Fair value measurement on recurring basis \| Level 2 \| Foreign currency exchange contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	1.2	2.1
Derivative liabilities, current	10.7	7.9
Fair value measurement on recurring basis \| Level 2 \| Commodity contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	0	0
Derivative liabilities, current	2.4	1.0
Non-current derivative liabilities at fair value	0.5	0.4
Fair value measurement on recurring basis \| Level 2 \| Interest rate swap - Fixed-to-float [Domain]
Financial assets and liabilities accounted for at fair value on a recurring basis
Non-current derivative liabilities at fair value	1.1
Fair value measurement on recurring basis \| Level 2 \| Interest rate swap contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative Asset, Noncurrent		0.8
Derivative liabilities, current		2.3
Non-current derivative liabilities at fair value	0.9
Fair value measurement on recurring basis \| Level 2 \| Interest Rate Swap [Member]
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative liabilities, current	2.3
Non-current derivative liabilities at fair value		4.3
Fair value measurement on recurring basis \| Level 3
Financial assets and liabilities accounted for at fair value on a recurring basis
Total current assets	0	0
Derivative Asset, Noncurrent		0
Total current liabilities	0	0
Total non-current liabilities	0	0
Fair value measurement on recurring basis \| Level 3 \| Foreign currency exchange contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	0	0
Derivative liabilities, current	0	0
Fair value measurement on recurring basis \| Level 3 \| Commodity contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	0	0
Derivative liabilities, current	0	0
Non-current derivative liabilities at fair value	0	0
Fair value measurement on recurring basis \| Level 3 \| Interest rate swap - Fixed-to-float [Domain]
Financial assets and liabilities accounted for at fair value on a recurring basis
Non-current derivative liabilities at fair value	0
Fair value measurement on recurring basis \| Level 3 \| Interest rate swap contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative Asset, Noncurrent		0
Derivative liabilities, current		0
Non-current derivative liabilities at fair value	0
Fair value measurement on recurring basis \| Level 3 \| Interest Rate Swap [Member]
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative liabilities, current	0
Non-current derivative liabilities at fair value		0
Fair value measurement on recurring basis \| Total
Financial assets and liabilities accounted for at fair value on a recurring basis
Total current assets	1.2	2.1
Derivative Asset, Noncurrent		0.8
Total current liabilities	15.4	11.2
Total non-current liabilities	2.5	4.7
Fair value measurement on recurring basis \| Total \| Foreign currency exchange contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	1.2	2.1
Derivative liabilities, current	10.7	7.9
Fair value measurement on recurring basis \| Total \| Commodity contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivatives assets, current	0	0
Derivative liabilities, current	2.4	1.0
Non-current derivative liabilities at fair value	0.5	0.4
Fair value measurement on recurring basis \| Total \| Interest rate swap - Fixed-to-float [Domain]
Financial assets and liabilities accounted for at fair value on a recurring basis
Non-current derivative liabilities at fair value	1.1
Fair value measurement on recurring basis \| Total \| Interest rate swap contracts
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative Asset, Noncurrent		0.8
Derivative liabilities, current		2.3
Non-current derivative liabilities at fair value	0.9
Fair value measurement on recurring basis \| Total \| Interest Rate Swap [Member]
Financial assets and liabilities accounted for at fair value on a recurring basis
Derivative liabilities, current	2.3
Non-current derivative liabilities at fair value		$ 4.3