Represents the percentage redeemed of the original outstanding amount of our 9.25% Notes.

No definition available.

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Represents the redemption premium associated with the voluntary redemption of a portion of the 9.25% Senior Secured Notes during the period.

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No definition available.

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Represents the premium paid in association with the early redemption of notes payable.

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Represents the original amount of the discount associated with the issuance of long-term notes.

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Face (par) amount of the original debt instrument that was redeemed.

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Represents expense recorded during the period for professional and underwriting fees related to a cash tender offer to purchase outstanding notes.

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Represents a reduction in maximum borrowing capacity associated with a line of credit facility due to the termination of one or more tranches within the line of credit facility.

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The amount of deferred financing costs and debt discounts related to a debt refinancing and/or redemption that were written off during the period, including early redemption premiums and fees.

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No definition available.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments applied to principal.

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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No definition available.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Long-Term Debt Long-term Debt Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 10, 2009	Mar. 01, 2013	Feb. 27, 2007	Nov. 03, 2011	Sep. 17, 2012
Debt Instrument [Line Items]
Debt		$ 1,536.4	$ 1,559.1
Current portion of long-term debt		13.0us-gaap_LongTermDebtCurrent	0us-gaap_LongTermDebtCurrent
Long-term debt and capital lease obligations		1,523.4	1,559.1
Debt issuance costs		0.3us-gaap_PaymentsOfDebtIssuanceCosts	16.7us-gaap_PaymentsOfDebtIssuanceCosts	10.6us-gaap_PaymentsOfDebtIssuanceCosts
Amended Revolving Facility, interest rate description		Borrowings under the revolving credit facility and term facility bear interest at rates based on adjusted LIBOR or an alternate base rate, plus an applicable margin. The applicable margin for LIBOR-based loans will be between 1.5% and 3.0%.
Line of credit facility, reduction in borrowing capacity, termination of loan facility	72.8
Write off of deferred debt issuance cost	0.5
Repayments of long-term debt		27.0us-gaap_RepaymentsOfLongTermDebt	652.0us-gaap_RepaymentsOfLongTermDebt	299.1us-gaap_RepaymentsOfLongTermDebt
Debt refinancing and redemption costs		0	36.8	19.8
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding		0	0
Amended revolving facility, maximum borrowing capacity		523.5
Amended revolving facility, remaining borrowing capacity		505.5
Amended revolving facility, standby letters of credit issued against the facility		18.0
Secured Debt [Member] \| Loans Payable [Member]
Debt Instrument [Line Items]
Long-term debt		142.5	150.0
Debt Instrument, Periodic Payment, Principal		7.5
Amended revolving facility, maximum borrowing capacity		150.0
Debt issuance costs		0.1	6.9	1.7
Secured Debt [Member] \| 9.25% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					425.0
Debt instrument, interest rate, stated percentage		9.25%
Debt instrument, original discount amount					5.5
9.25% Notes, percentage redeemed				10.00%
9.25% Notes, premium percentage applicable to voluntary redemption during the period				103.00%
Repayments of long-term debt			340.0	42.5
Debt instrument, early redemption premium			18.9	1.3
Debt refinancing and redemption costs			6.7	1.0
Debt instrument, redemption amount			190.0
Debt instrument, repurchased face amount				42.5
Unsecured Debt [Member] \| 7.875% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount							300.0
Debt instrument, interest rate, stated percentage		7.875%
Debt instrument, early redemption premium	8.5
Debt instrument, tender offer, fees	0.1
Debt instrument, repurchased face amount						300.0
Unsecured Debt [Member] \| 7.75% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		200.0	200.0
Debt instrument, face amount								200.0
Debt instrument, interest rate, stated percentage		7.75%
Unsecured Debt [Member] \| 6.625% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		550.0	550.0
Debt issuance costs				0
Debt instrument, face amount									550.0
Debt instrument, interest rate, stated percentage		6.625%
Unsecured Debt [Member] \| 5.25% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		0.00%
Debt instrument, repurchased face amount				250.0
Unsecured Debt [Member] \| 6.25% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		400.0	400.0
Debt issuance costs			6.6
Debt instrument, interest rate, stated percentage		6.25%
Unsecured Debt [Member] \| 5.125% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		200.0	200.0
Debt issuance costs		0.2	3.1
Debt instrument, interest rate, stated percentage		5.125%
Foreign Credit Facilities [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding		38.9	53.8
Foreign Credit Facilities, Remaining Borrowing Capacity		51.1
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital lease obligations		5.0	5.3
Debt Repurchase [Member] \| Unsecured Debt [Member] \| 7.875% Notes [Member]
Debt Instrument [Line Items]
Debt refinancing and redemption costs	$ 2.1