Supplemental Cash Flow Information Footnote (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flow Supplemental Disclosures [Line Items]
Foreign earnings repatriated	$ 1,400.0	$ 12.6	$ 12.3
Rockwood Holdings, Inc.
Cash Flow Supplemental Disclosures [Line Items]
Foreign earnings repatriated	$ 111.0