Schedule II - Valuation and Qualifying Accounts and Reserves (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ (83.9)	[1]	$ (64.7)	[1]	$ (60.7)	[1]
Charges to costs and expense	(70.7)	[1]	(54.0)	[1]	(45.2)	[1]
Deductions from reserves	76.1	[1]	31.7	[1]	40.4	[1]
Other	(1.2)	[1],[2]	3.1	[1],[2]	0.8	[1],[2]
Balance at end of period	$ (79.7)	[1]	$ (83.9)	[1]	$ (64.7)	[1]

[1] Principally consisting of reserves for uncollectable accounts and sales returns and allowances.

[2] Principally consisting of foreign currency translation.