CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenues	$ 1,145.6	$ 2.1	$ 5.3
Cost of sales	1,070.7
Gross profit	74.9	2.1	5.3
Selling, general and administrative expenses	56.0	10.0	12.9
Losses on derivative financial instruments	4.2
Amortization of intangibles	2.0	0.1
Other operating expense, net	2.5	0.4	0.1
Operating profit (loss)	10.2	(8.4)	(7.7)
Nonoperating expense (income):
Interest expense (income), net	34.9	(0.1)	2.0
Change in fair value of common stock warrant liability	1.5	(3.7)	6.9
Acquisition-related costs and expenses	14.8	3.4
Foreign exchange loss on intercompany loans	1.3
Other, net	(1.5)	0.5	(0.1)
Total nonoperating expense	51.0	0.1	8.8
Loss from continuing operations before income taxes	(40.8)	(8.5)	(16.5)
Income tax benefit	(9.1)	(8.4)	(2.3)
Loss from continuing operations	(31.7)	(0.1)	(14.2)
Earnings from discontinued operations, net of income taxes	24.9	5.5	4.2
Net earnings (loss)	(6.8)	5.4	(10.0)
Earnings (loss) from continuing operations attributable to noncontrolling interest	0.1	(0.1)
Net earnings (loss) attributable to Real Industry, Inc.	(6.9)	5.5	(10.0)
EARNINGS (LOSS) PER SHARE
Net earnings (loss) attributable to Real Industry, Inc.	(6.9)	5.5	(10.0)
Dividends and accretion on Redeemable Preferred Stock	(2.3)
Net earnings (loss) available to common stockholders	$ (9.2)	$ 5.5	$ (10.0)
Basic and diluted earnings (loss) per share:
Continuing operations	$ (1.28)		$ (1.11)
Discontinued operations	0.93	$ 0.41	0.32
Basic and diluted earnings (loss) per share	$ (0.35)	$ 0.41	$ (0.79)