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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2012
Subsequent Events [Abstract]
Subsequent Events	NOTE R. Subsequent Events On April 2, 2012, the Company acquired 100 percent of the share capital of Carmeuse Industrial Sands, which is the producer of Hickory sand that is primarily used as proppant for fracture stimulating oil and gas wells in the United States. Upon acquisition, the Company changed the name of the acquired entity to Premier Silica LLC ("Premier Silica"). The aggregate purchase price of Premier Silica was approximately $297.0 million, before normal closing adjustments, and was funded from available cash and borrowings under the Company's credit facility.