Carrying Amount and Estimated Fair Values of Debt (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other foreign loans fair value	$ 52.2		$ 37.4
Other domestic loans fair value	0.6		1.3
Fair Value	5,148.1		5,163.8
Credit facility amount outstanding	49.0		34.5
Other foreign loans carrying value	52.8		37.8
Other domestic loans carrying value	0.6		1.4
Carrying Amount	4,937.3	[1]	5,003.1	[1]
5.625 % Senior Notes due July 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Senior notes fair value	409.2	[2]	414.1	[2]
Senior notes	400.5	[2]	401.0	[2],[3],[4]
12% Senior Notes due February 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Senior notes fair value	172.6	[2]	179.8	[2]
Senior notes	154.2	[2],[4]	156.3	[2],[4]
Multicurrency term A facility tranche [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Credit facility amount outstanding fair value	875.1	[5]	945.7	[5]
Credit facility amount outstanding	875.1	[5]	945.7	[5]
7.875% Senior Notes due June 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Senior notes fair value	430.4		426.0
Senior notes	394.3		393.5
Multicurrency term B facility tranche [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Credit facility amount outstanding fair value	1,111.2	[5]	1,118.8	[5]
Credit facility amount outstanding	1,111.2	[5]	1,118.8	[5]
8.125% Senior Notes due 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Senior notes fair value	830.4		824.5
Senior notes	750.0		750.0
8.375% Senior Notes due 2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Senior notes fair value	841.2		826.9
Senior notes	750.0		750.0
6.875% Senior Notes due July 2033 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Senior notes fair value	425.2		389.3
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] 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."

[3] 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.

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

[5] Includes non-U.S. dollar tranches.