Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 50.3	$ 59.4
Other comprehensive income (loss):
Defined benefit pension and other postretirement plans, net of income taxes	(0.1)	0.1
Currency translation adjustments	(2.1)	(6.4)
Gain (loss) from hedging activities, net of income taxes	0.7	0.4
Gain on securities available for sale	0.1	0
Total other comprehensive income (loss) attributable to noncontrolling interests	0.1	0.2
Total other comprehensive income	(1.3)	(5.7)
Comprehensive income	49.0	53.7
Less: comprehensive income attributable to noncontrolling interests	(0.3)	(0.5)
Comprehensive income attributable to W. R. Grace & Co. shareholders	$ 48.7	$ 53.2