Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (27.2)	$ (2.1)	$ (43.1)	$ (10.4)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	2.7	2.3	(20.6)	(12.5)
Unrecognized post-retirement plan (loss) gain	(0.1)	(0.1)	0.5	(0.3)
Unrealized gain on hedging activities	0.4	1.5	1.4	2.3
Total other comprehensive income (loss), net of tax	3.0	3.7	(18.7)	(10.5)
Comprehensive (loss) income	(24.2)	1.6	(61.8)	(20.9)
Less: Comprehensive loss attributable to noncontrolling interest	0.0	0.0	0.0	0.1
Comprehensive (loss) income attributable to Milacron Holdings Corp.	$ (24.2)	$ 1.6	$ (61.8)	$ (20.8)