CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Consolidated net income	$ 111.6	$ 95.5	$ 83.4
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(76.6)	(51.5)	(16.5)
Pension and postretirement plan adjustments	7.3	(31.1)	34.3
Unrealized gains (losses) on cash flow hedges	0.0	0.0	0.5
Total other comprehensive income (loss), net of tax	(69.3)	(82.6)	18.3
Total comprehensive income including non-controlling interests	42.3	12.9	101.7
Less: Net income (loss) attributable to non-controlling interests	3.7	3.1	3.1
Less: Foreign currency translation adjustments attributable to non-controlling interest	(1.3)	(1.0)	(1.7)
Comprehensive income (loss) attributable to non-controlling interest	2.4	2.1	1.4
Comprehensive income attributable to MTI	$ 39.9	$ 10.8	$ 100.3