Total Debt Outstanding (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
Short-term borrowings	$ 49.0		$ 34.5
Current portion of long-term debt	402.0		1.9
Total current debt	451.0		36.4
Credit facility amount outstanding	49.0		34.5
Other	2.9		2.8
Long-term debt, less current portion	4,486.3		4,966.7
Total debt(4)	4,937.3	[1]	5,003.1	[1]
Multicurrency term A facility tranche [Member]
Debt Instrument [Line Items]
Credit facility amount outstanding	875.1	[2]	945.7	[2]
Multicurrency term B facility tranche [Member]
Debt Instrument [Line Items]
Credit facility amount outstanding	1,111.2	[2]	1,118.8	[2]
5.625 % Senior Notes due July 2013 [Member]
Debt Instrument [Line Items]
Senior notes	400.5	[3]	401.0	[3],[4],[5]
12% Senior Notes due February 2014 [Member]
Debt Instrument [Line Items]
Senior notes	154.2	[3],[5]	156.3	[3],[5]
7.875% Senior Notes due June 2017 [Member]
Debt Instrument [Line Items]
Senior notes	394.3		393.5
8.125% Senior Notes due 2019 [Member]
Debt Instrument [Line Items]
Senior notes	750.0		750.0
8.375% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Senior notes	750.0		750.0
6.875% Senior Notes due July 2033 [Member]
Debt Instrument [Line Items]
Senior notes	$ 448.6		$ 448.6

[1] The weighted average interest rate on our outstanding debt was 6.4% as of September 30, 2012 and 2.6% as of December 31, 2011.

[2] In the nine months ended September 30, 2012, we prepaid our 2013 Term Loan A ($78 million) and Term Loan B ($8 million) installments.

[3] The carrying value of such debt includes adjustments due to interest rate swaps. The fair value of such debt includes adjustments due to outstanding interest rate swaps. See Note 12, "Derivatives and Hedging Activities."

[4] Our 5.625% Senior Notes mature in July 2013. Accordingly, we reclassed the carrying value of these notes to current portion of long-term debt from long-term debt, less current portion in July 2012.

[5] Amount includes adjustments due to interest rate swaps. See "Interest Rate Swaps," of Note 12, "Derivatives and Hedging Activities," for further discussion.