Represents the minimum percentage of the original principal amount of the debt instrument that must remain outstanding after the entity has redeemed a portion of the debt instrument with net cash proceeds from qualified equity offerings.

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Represents the number of series of senior notes outstanding.

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Represents the maximum redemption period for the entity to redeem the debt instrument following the receipt of net proceeds from qualified equity offerings.

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Represents the redemption price of the debt instrument as a percentage of the principal amount.

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Represents the redemption price of the debt instrument as a percentage of the principal amount if redeemed with net proceeds from qualified equity offerings.

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Represents the maximum percentage of the original principal amount of the debt instruments that the entity may redeem with net cash proceeds from qualified equity offerings.

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Represents weighted average interest rates, including interest rate swaps, for the term loans.

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Represents the number of years following the trade date that the interest rate derivatives of the Senior Notes may be terminated.

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Represents the minimum percentage of the principal amount outstanding on the Senior Notes which entitles the holders to declare the debt instrument due and payable immediately in the event of default.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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Interest rate stated in the contractual debt agreement.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Subparagraph (SX 210.5-02.22(a)(1))

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 24

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-SubTopic 25

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Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.

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-Publisher FASB

-Name Accounting Standards Codification

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Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 28

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-Name Accounting Standards Codification

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-Subparagraph (SX 210.5-03.8)

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Debt (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended			12 Months Ended	24 Months Ended			1 Months Ended	9 Months Ended	12 Months Ended		24 Months Ended	36 Months Ended				1 Months Ended	9 Months Ended	12 Months Ended			24 Months Ended	36 Months Ended						9 Months Ended
	Sep. 30, 2010	Sep. 30, 2011 segment M party D note Y	Sep. 30, 2010	Dec. 31, 2010	Oct. 31, 2011 Senior Notes 7.125% due 2013	Oct. 31, 2013 Senior Notes 7.125% due 2013	Sep. 30, 2011 Senior Notes 7.125% due 2013	Dec. 31, 2010 Senior Notes 7.125% due 2013	Feb. 28, 2010 Senior Notes 9.5 % due 2018	Sep. 30, 2011 Senior Notes 9.5 % due 2018	Feb. 14, 2016 Senior Notes 9.5 % due 2018	Feb. 14, 2015 Senior Notes 9.5 % due 2018	Feb. 14, 2018 Senior Notes 9.5 % due 2018	Feb. 14, 2013 Senior Notes 9.5 % due 2018 D	Feb. 15, 2013 Senior Notes 9.5 % due 2018	Dec. 31, 2010 Senior Notes 9.5 % due 2018	Feb. 03, 2010 Senior Notes 9.5 % due 2018	Oct. 31, 2010 Senior Notes 8.5 % due 2020	Sep. 30, 2011 Senior Notes 8.5 % due 2020	Oct. 31, 2018 Senior Notes 8.5 % due 2020	Oct. 31, 2017 Senior Notes 8.5 % due 2020	Oct. 31, 2016 Senior Notes 8.5 % due 2020	Oct. 31, 2020 Senior Notes 8.5 % due 2020	Oct. 31, 2013 Senior Notes 8.5 % due 2020 D	Nov. 01, 2013 Senior Notes 8.5 % due 2020	Dec. 31, 2010 Senior Notes 8.5 % due 2020	Oct. 18, 2010 Senior Notes 8.5 % due 2020	Sep. 30, 2011 Other	Dec. 31, 2010 Other	Sep. 30, 2011 Interest rate cap contracts
Debt:
Loss on debt extinguishment	$ 1.1	$ 27.8	$ 16.8
Write-off of deferred financing fees		14.2
Financing fees related to unwinding of related interest rate swaps		13.6
Number of Senior Notes outstanding		3
Event of default, minimum percentage of Senior Notes held required to declare debt due and payable (as a percent)		25.00%
Carrying amount		2,100.4		1,997.4			150.0	150.0		407.0						392.9			611.2							585.3		73.5	47.2
Interest rate, stated percentage (as a percent)							7.125%			9.50%							9.50%		8.50%								8.50%
Redemption price of debt instrument (as a percent)					101.188%	100.00%					102.375%	104.75%	100.00%							101.417%	102.833%	104.25%	100.00%
Face amount of debt																	400.0										600.0
Proceeds from long-term debt used to pay down debt									392.0									583.7
Maximum percentage of the principal amount of the debt instrument which the entity may redeem with proceeds from qualified equity offerings (as a percent)										35.00%					35.00%				35.00%						35.00%
Redemption price of debt instrument if redeemed with proceeds from qualified equity offerings (as a percent)														109.50%										108.50%
Minimum percentage of the principal amount of the debt instrument which must remain outstanding after the entity has redeemed a portion of the debt instrument with proceeds from qualified equity offerings (as a percent)										65.00%					65.00%				65.00%						65.00%
Maximum redemption period for the entity to redeem the debt instrument following the receipt of proceeds from qualified equity offerings (in number of days)														90										90
Weighted average interest rate (as a percent)																												6.40%
Debt instrument, hedged portion										125.0									200.0
Notional amount of interest rate derivative contracts																														$ 450.0
Percentage added to reference rate (as a percent)										7.48%									6.05%
Reference rate description										six-month LIBOR in arrears									six-month LIBOR in arrears											LIBOR rate of 3.00%
Weighted average interest rate, including interest rate swaps (as a percent)										9.01%									7.83%
Number of years from the trade date that the interest rate derivatives of the Senior Notes may be terminated (in years)		5