Investments in Joint Ventures - Income Loss From Affiliates and Joint Ventures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 Ashapura AMCOL N.V. [Member]	Mar. 31, 2013 Novinda Corporation [Member]
Schedule of Equity and Cost Method Investments [Line Items]
Income from affiliates and joint ventures	$ 3.2	$ 3.9	$ 5.2
Gain (loss) from sale of joint venture and affiliated entities				2.1
Business acquisition cost					$ 5.0