Goodwill and Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Schedule of the balance of goodwill by segment and the activity occurring in the past two fiscal years
Balance at beginning of the period	$ 69.5	$ 70.9
Change in goodwill relating to:
Sale of business		(0.2)
Foreign exchange translation	0.7	(1.2)
Total changes	0.7	(1.4)
Balance at ending of the period	70.2	69.5
Performance Materials [Member]
Schedule of the balance of goodwill by segment and the activity occurring in the past two fiscal years
Balance at beginning of the period	17.4	18.2
Change in goodwill relating to:
Sale of business		0
Foreign exchange translation	0.4	(0.8)
Total changes	0.4	(0.8)
Balance at ending of the period	17.8	17.4
Construction Technologies [Member]
Schedule of the balance of goodwill by segment and the activity occurring in the past two fiscal years
Balance at beginning of the period	21.1	21.7
Change in goodwill relating to:
Sale of business		(0.2)
Foreign exchange translation	0.3	(0.4)
Total changes	0.3	(0.6)
Balance at ending of the period	21.4	21.1
Energy Services [Member]
Schedule of the balance of goodwill by segment and the activity occurring in the past two fiscal years
Balance at beginning of the period	31.0	31.0
Change in goodwill relating to:
Sale of business		0
Foreign exchange translation	0	0
Total changes	0	0
Balance at ending of the period	$ 31.0	$ 31.0