UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues	$ 337.1	$ 309.4
Cost of sales	323.7	292.8
Gross profit	13.4	16.6
Selling, general and administrative expenses	14.4	15.4
Losses on derivative financial instruments, net	1.1	1.2
Amortization of identifiable intangible assets	0.6	0.6
Other operating expense, net	0.9	1.5
Operating loss	(3.6)	(2.1)
Nonoperating expense (income):
Interest expense, net	11.0	9.2
Change in fair value of common stock warrant liability	(2.5)	0.6
Income from equity method investment	(1.1)	0.0
Foreign exchange gains on intercompany loans	(0.8)	(2.6)
Other, net	0.3	0.0
Total nonoperating expense, net	6.9	7.2
Loss from continuing operations before income taxes	(10.5)	(9.3)
Income tax expense	0.8	0.7
Loss from continuing operations	(11.3)	(10.0)
Earnings (loss) from discontinued operations, net of income taxes	0.0	0.0
Net loss	(11.3)	(10.0)
Earnings from continuing operations attributable to noncontrolling interest	0.1	0.1
Net loss attributable to Real Industry, Inc.	(11.4)	(10.1)
LOSS PER SHARE
Net loss attributable to Real Industry, Inc.	(11.4)	(10.1)
Dividends on Redeemable Preferred Stock, in-kind	0.0	(0.5)
Dividends on Redeemable Preferred Stock, accrued	(0.6)	0.0
Accretion of fair value adjustment to Redeemable Preferred Stock	(0.2)	(0.2)
Net loss available to common stockholders	$ (12.2)	$ (10.8)
Basic and diluted loss per share:
Continuing operations	$ (0.43)	$ (0.38)
Discontinued operations	0	0
Basic and diluted loss per share	$ (0.43)	$ (0.38)