Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (11.2)	$ (3.9)	$ (54.3)	$ (14.3)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(21.8)	(15.8)	(42.4)	(28.3)
Unrecognized post-retirement plan (loss) gain	(0.2)	0.1	0.3	(0.2)
Unrealized gain (loss) on hedging activities	1.0	(1.8)	2.4	0.5
Total other comprehensive loss, net of tax	(21.0)	(17.5)	(39.7)	(28.0)
Comprehensive loss	(32.2)	(21.4)	(94.0)	(42.3)
Less: Comprehensive loss attributable to noncontrolling interest	0.0	0.0	0.0	0.1
Comprehensive loss attributable to Milacron Holdings Corp.	$ (32.2)	$ (21.4)	$ (94.0)	$ (42.2)