Schedule II Valuation and Qualifying Accounts (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Allowance for cash discounts, returns and sales allowances
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 33.9		$ 32.7		$ 37.0
Charged to Expense	129.6		122.1		128.1
Write-offs, and Deductions	118.4	[1]	120.9	[1]	132.6	[1]
Balance at End of Period	45.1		33.9		32.7
Allowance for doubtful accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	5.8		7.9		8.6
Charged to Expense	1.3		0.5		1.2
Write-offs, and Deductions	1.7	[1]	2.6	[1]	1.9	[1]
Balance at End of Period	5.4		5.8		7.9
Allowance for deferred tax assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	19.8		18.8		26.6
Charged to Expense	(7.8)		1.0		(7.8)
Balance at End of Period	$ 12.0		$ 19.8		$ 18.8

[1] Net of recoveries of amounts written off in prior years and immaterial foreign currency impact.