Debt and Credit Facilities - Total Debt Outstanding (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended																	0 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Term Loan A Facility Noncurrent [Member]	Dec. 31, 2013 Term Loan A Facility Noncurrent [Member]	Mar. 31, 2014 Term Loan B Facility Noncurrent [Member]	Dec. 31, 2013 Term Loan B Facility Noncurrent [Member]	Mar. 31, 2014 8.125% Senior Notes Due September 2019 [Member]	Dec. 31, 2013 8.125% Senior Notes Due September 2019 [Member]	Mar. 31, 2014 6.50% Senior Notes Due December 2020 [Member]	Dec. 31, 2013 6.50% Senior Notes Due December 2020 [Member]	Mar. 31, 2014 8.375% Senior Notes Due September 2021 [Member]	Dec. 31, 2013 8.375% Senior Notes Due September 2021 [Member]	Mar. 31, 2014 5.25% Senior Notes Due April 2023 [Member]	Dec. 31, 2013 5.25% Senior Notes Due April 2023 [Member]	Mar. 31, 2014 6.875% Senior Notes Due July 2033 [Member]	Dec. 31, 2013 6.875% Senior Notes Due July 2033 [Member]	Feb. 14, 2014 12% Senior Notes Due February 2014 [Member]	Mar. 31, 2014 12% Senior Notes Due February 2014 [Member]	Dec. 31, 2013 12% Senior Notes Due February 2014 [Member]	Mar. 31, 2014 Term Loan A Facility [Member]	Mar. 31, 2014 Term Loan B Facility Due October 2018 [Member]	Dec. 31, 2013 Term Loan B Facility Due October 2018 [Member]	Mar. 31, 2014 Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unamortized discount				$ 7.0	$ 8.4											$ 1.4	$ 1.4					$ 10.3	$ 10.8
Unamortized lender fees						7.0	7.3
Debt interest rate								8.125%	8.125%	6.50%	6.50%	8.375%	8.375%	5.25%	5.25%	6.875%	6.875%		12.00%	12.00%
Weighted average interest rate	5.60%		6.20%
Amount outstanding under accounts receivable securitization program	217
Revolving credit facilities																								385
Weighted average interest rate of borrowings	1.20%																							2.72%
Percentage of senior notes repaid																		12.00%
Current portion of long term debt	10.6		201.5																		9.0
Payments of long-term debt	$ 200.4	$ 428.0																			$ 50.0