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Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended							3 Months Ended														3 Months Ended			3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2012 Revolving Credit Facility [Member]	Mar. 31, 2013 Secured Debt [Member] 9.25% Notes [Member]	Dec. 31, 2012 Secured Debt [Member] 9.25% Notes [Member]	Mar. 31, 2013 Unsecured Debt [Member] 7.875% Notes [Member]	Mar. 15, 2013 Unsecured Debt [Member] 7.875% Notes [Member]	Mar. 01, 2013 Unsecured Debt [Member] 7.875% Notes [Member]	Dec. 31, 2012 Unsecured Debt [Member] 7.875% Notes [Member]	Mar. 31, 2013 Unsecured Debt [Member] 7.75% Notes [Member]	Dec. 31, 2012 Unsecured Debt [Member] 7.75% Notes [Member]	Mar. 31, 2013 Unsecured Debt [Member] 6.625% Notes [Member]	Dec. 31, 2012 Unsecured Debt [Member] 6.625% Notes [Member]	Mar. 31, 2013 Unsecured Debt [Member] 6.25% Notes [Member]	Dec. 31, 2012 Unsecured Debt [Member] 6.25% Notes [Member]	Mar. 31, 2013 Foreign Credit Facilities [Member]	Dec. 31, 2012 Foreign Credit Facilities [Member]	Mar. 31, 2013 Capital Lease Obligations [Member]	Dec. 31, 2012 Capital Lease Obligations [Member]	Mar. 31, 2013 Class C [Member] Revolving Credit Facility [Member]	Mar. 20, 2013 Class C [Member] Revolving Credit Facility [Member]	Mar. 31, 2013 Class D [Member] Revolving Credit Facility [Member]	Mar. 31, 2013 Debt Repurchase [Member] Unsecured Debt [Member] 7.875% Notes [Member]	Mar. 31, 2013 Debt Redemption [Member] Unsecured Debt [Member] 7.875% Notes [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding				$ 0	$ 0													$ 77.0	$ 61.0
Debt Instrument, Make-whole Premium								3.3
Notes payable						337.6	337.5	0		300.0	300.0	200.0	200.0	550.0	550.0	400.0	0
Capital Lease Obligations																				5.6	5.6
Long-term debt	1,570.2		1,454.1
Debt Instrument, Interest Rate, Stated Percentage						9.25%		7.875%				7.75%		6.625%		6.25%
Debt Instrument, Decrease, Repayments								300.0
Debt Instrument, Repurchased Face Amount										172.6
Debt Instrument, Redemption Amount									127.4
Payments of Debt Issuance Costs	6.2	0
Line of credit facility, maximum borrowing capacity																							72.8	365.0
Line of credit facility, remaining borrowing capacity				342.1
Line of credit facility, standby letters of credit issued against the facility				22.9
Debt Instrument, Unused Borrowing Capacity, Amount																		13.6
Long-term debt, weighted average interest rate	7.50%		7.90%
Debt Instrument, Tender Premium								5.2
Debt Instrument, Tender Offer, Fees								0.2
Other expense - Debt refinancing and redemption costs	$ 11.3	$ 0																				$ 0.5			$ 1.2	$ 0.9

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- Definition

Represents cash paid during the period for a make-whole premium related to the redemption of outstanding 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 the amount of expense recorded during the period for a tender premium related to a cash tender offer for outstanding notes.

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The amount of total standby letters of credit issued against the revolving credit facility at the reporting date, which represents a reduction of the available borrowing capacity.

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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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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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Decrease for amounts repaid on the debt instrument for the period.

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Interest rate stated in the contractual debt agreement.

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

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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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Amount borrowed under the credit facility as of the balance sheet date.

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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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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of long-term debt outstanding by type or by instrument at that time.

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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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