Inventories Breakdown of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Inventory Disclosure [Abstract]
Finished goods	$ 268,276		$ 340,863
Raw materials	58,896		47,784
Stores, supplies and other	40,739		47,402
Total inventories	$ 367,911	[1]	$ 436,049

[1] Decrease in Total inventories is primarily related to the sale of our antioxidant, ibuprofen and propofol businesses and assets which closed on September 1, 2014.