Balance and Transactions Between Company (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Armand Products Company
Related Party Transaction [Line Items]
Purchases by Company	$ 17.1		$ 17.8
Sales by Company	0		0
Outstanding Accounts Receivable	0.5		0.1
Outstanding Accounts Payable	2.0		2.2
Administration & Management Oversight Services	1.4	[1]	1.2	[1]
Armakleen Company
Related Party Transaction [Line Items]
Purchases by Company	0		0
Sales by Company	1.0		3.9
Outstanding Accounts Receivable	0.4		0.5
Outstanding Accounts Payable	0		0
Administration & Management Oversight Services	1.6	[1]	1.6	[1]
Natronx LLC
Related Party Transaction [Line Items]
Purchases by Company	0		0
Sales by Company	1.3		2.0
Outstanding Accounts Receivable	0.1		0.2
Outstanding Accounts Payable	0		0
Administration & Management Oversight Services	$ 0.9	[1]	$ 0.7	[1]

[1] Billed by Company and recorded as a reduction of selling, general and administrative expenses.