Debt (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013	Mar. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Total debt		$ 3,866.4		$ 3,798.1
Less: current portion		(520.2)		(504.7)
Total long-term debt		3,346.2		3,293.4
Senior Secured Credit Facility Term Loans
Debt Instrument [Line Items]
Total debt		1,466.2		1,235.5
8% Senior Notes Due 2016
Debt Instrument [Line Items]
Total debt		129.7	[1]	295.7	[1]
Interest rate of debt instrument	8.00%	8.00%		8.00%
Debt instrument maturity year	2016	2016		2016
6 1/8% Senior Notes Due 2022
Debt Instrument [Line Items]
Total debt		300.0	[1]	300.0	[1]
Interest rate of debt instrument		6.125%		6.125%
Debt instrument maturity year		2022		2022
7 1/2% Senior Subordinated Notes Due 2017
Debt Instrument [Line Items]
Total debt		654.9	[2]	655.3	[2]
Interest rate of debt instrument		7.50%		7.50%
Debt instrument maturity year		2017		2017
7 1/2% Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Total debt		463.8	[2]	468.4	[2]
Interest rate of debt instrument		7.50%		7.50%
Debt instrument maturity year		2020		2020
1 7/8% Senior Subordinated Convertible Notes due 2018
Debt Instrument [Line Items]
Total debt		423.8		420.9
Interest rate of debt instrument		1.875%		1.875%
Debt instrument maturity year		2018		2018
Securitization Facility
Debt Instrument [Line Items]
Total debt		381.8		383.8
Non-U.S. Borrowings
Debt Instrument [Line Items]
Total debt		40.1		31.8
Other
Debt Instrument [Line Items]
Total debt		$ 6.1		$ 6.7

[1] Collectively, the "Senior Notes."

[2] Collectively, the "Senior Subordinated Notes."