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Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended			3 Months Ended		3 Months Ended				3 Months Ended								3 Months Ended							3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Revolving Credit Facility [Member]	Dec. 31, 2011 Revolving Credit Facility [Member]	Dec. 31, 2012 Secured Debt [Member]	Oct. 05, 2012 Secured Debt [Member]	Sep. 30, 2012 Secured Debt [Member]	Dec. 31, 2011 Secured Debt [Member]	Dec. 31, 2012 Unsecured Debt [Member] 2014 Notes [Member]	Sep. 30, 2012 Unsecured Debt [Member] 2014 Notes [Member]	Sep. 18, 2012 Unsecured Debt [Member] 2014 Notes [Member]	Dec. 31, 2011 Unsecured Debt [Member] 2014 Notes [Member]	Sep. 30, 2012 Unsecured Debt [Member] 2017 Notes [Member]	Dec. 31, 2011 Unsecured Debt [Member] 2017 Notes [Member]	Sep. 30, 2012 Unsecured Debt [Member] 2019 Notes [Member]	Dec. 31, 2011 Unsecured Debt [Member] 2019 Notes [Member]	Sep. 30, 2012 Unsecured Debt [Member] 2022 Notes [Member]	Dec. 31, 2011 Unsecured Debt [Member] 2022 Notes [Member]	Sep. 30, 2012 Foreign Credit Facilities [Member]	Dec. 31, 2011 Foreign Credit Facilities [Member]	Sep. 30, 2012 Capital Lease Obligations [Member]	Dec. 31, 2011 Capital Lease Obligations [Member]	Jun. 30, 2016 Class D [Member] Revolving Credit Facility [Member]	Sep. 30, 2012 Class C [Member] Revolving Credit Facility [Member]	Jun. 30, 2013 Class C [Member] Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Increase, Additional Borrowings																		$ 550.0
Debt Instrument, Interest Rate, Stated Percentage								9.25%			5.25%							6.625%
Debt Instrument, Decrease, Repayments						42.5				112.2
Redemption Premium						1.3					9.2
Write off of Deferred Debt Issuance Cost											0.1
Debt Instrument, Make-whole Premium										7.3
Payments of Debt Issuance Costs	10.1	5.7		1.5														8.6
Debt Instrument, Repurchase Amount												137.8
Long-term debt	1,579.9		1,180.2	0	0			379.5	379.0		112.1	250.0	249.9	300.0	300.0	200.0	200.0	550.0	0	32.6	45.2		6.1
Capital Lease Obligations																						5.7
Line of credit facility, maximum borrowing capacity																								365.0		72.8
Write-off of Unamortized Debt Issuance Costs						1.1				0.2															0.3
9.25% Notes, Percentage Redeemed							10.00%
9.25% Notes, Redemption Price							103.00%
Line of credit facility, remaining borrowing capacity				412.9																38.8
Line of credit facility, standby letters of credit issued against the facility				24.9
Increase in Revolving Credit Facility Aggregate Commitments				$ 116.0
Long-term debt, weighted average interest rate	7.80%		8.00%

X

- Definition

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

+ References

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Represents the redemption price associated with the early redemption of our 9.25% Notes.

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Represents cash paid during the period for a make-whole premium related to the redemption of outstanding notes.

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- Definition

Represents the increase in the aggregate commitments associated with the Revolving Credit Facility due to amendments to the facility during the period.

+ References

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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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- Definition

Represents the amount of expense recorded during the period due to the write-off of unamortized debt issuance costs.

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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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Increase of additional borrowings on existing and new debt instruments.

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Interest rate stated in the contractual debt agreement.

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Fair value amount of debt instrument that was repurchased.

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- Definition

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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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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The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

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

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