Segment Information Summarized Financial Information by Reportable Segments (Footnote) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Jan. 12, 2015
Segment Reporting Information [Line Items]
Utilization of inventory markup	$ 48,200,000
Cost of goods sold
Segment Reporting Information [Line Items]
Utilization of inventory markup	40,300,000
Equity in net income of unconsolidated investments
Segment Reporting Information [Line Items]
Utilization of inventory markup	7,900,000
Rockwood Holdings, Inc.
Segment Reporting Information [Line Items]
Inventory markup		$ 103,000,000