UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net earnings (loss)	$ 1.3	$ 0.8	$ (3.0)	$ 0.4
Other comprehensive loss:
Current period currency translation adjustments	(1.7)		(2.6)
Comprehensive income (loss)	(0.4)	0.8	(5.6)	0.4
Comprehensive income attributable to noncontrolling interest	0.1		0.3
Comprehensive income (loss) attributable to Real Industry, Inc.	$ (0.5)	$ 0.8	$ (5.9)	$ 0.4