Schedule II - Valuation and Qualifying Accounts and Reserves (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ (97.0)	[1]	$ (79.7)	[1]	$ (83.9)	[1]
Charges to costs and expense	(93.1)	[1]	(92.5)	[1]	(70.7)	[1]
Deductions from reserves	67.4	[1]	74.9	[1]	76.1	[1]
Other	3.0	[1],[2]	0.3	[1],[2]	(1.2)	[1],[2]
Balance at end of period	$ (119.7)	[1]	$ (97.0)	[1]	$ (79.7)	[1]

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

[2] Principally consisting of foreign currency translation.