Balance and Transactions Between Company (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Armand Products Company
Related Party Transaction [Line Items]
Purchases by Company	$ 10.1		$ 10.4
Sales by Company	0		0
Outstanding Accounts Receivable	1.9		0.9
Outstanding Accounts Payable	1.9		2.5
Administration & Management Oversight Services	0.8	[1]	0.8	[1]
Armakleen Company
Related Party Transaction [Line Items]
Purchases by Company	0		0
Sales by Company	0.6		2.5
Outstanding Accounts Receivable	1.2		0.1
Outstanding Accounts Payable	0		0
Administration & Management Oversight Services	1.1	[1]	1.1	[1]
Natronx LLC
Related Party Transaction [Line Items]
Purchases by Company	0		0
Sales by Company	0.8		1.4
Outstanding Accounts Receivable	0.4		0.2
Outstanding Accounts Payable	0		0
Administration & Management Oversight Services	$ 0.7	[1]	$ 0.5	[1]

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