Debt and Credit Facilities - Total Debt Outstanding (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Short-term borrowings	$ 75.2	$ 39.2
Current portion of long-term debt	180.0	1.8
Total current debt	255.2	41.0
Credit facility amount outstanding	75.2	39.2
Other	2.6	3.8
Total long-term debt, less current portion	4,335.2	4,540.8
Total debt	4,590.4	4,581.8
Term Loan A Facility due October 2016
Debt Instrument [Line Items]
Credit facility amount outstanding	761.5	843.9
Term Loan B Facility due October 2018
Debt Instrument [Line Items]
Credit facility amount outstanding	772.5	771.6
5.25% Senior Notes due April 2023
Debt Instrument [Line Items]
Senior Notes	425.0
12% Senior Notes due February 2014
Debt Instrument [Line Items]
Senior Notes	151.1	153.4
7.875% Senior Notes due June 2017
Debt Instrument [Line Items]
Senior Notes		394.5
8.125% Senior Notes due September 2019
Debt Instrument [Line Items]
Senior Notes	750.0	750.0
6.50% Senior Notes due December 2020
Debt Instrument [Line Items]
Senior Notes	425.0	425.0
8.375% Senior Notes due September 2021
Debt Instrument [Line Items]
Senior Notes	750.0	750.0
6.875% Senior Notes due July 2033
Debt Instrument [Line Items]
Senior Notes	$ 448.6	$ 448.6

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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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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

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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 and capital leases due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of debt not otherwise defined (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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