CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Consolidated net income	$ 41.1	$ 35.6
Other comprehensive income, net of tax:
Foreign currency translation adjustments	15.2	13.0
Pension and postretirement plan adjustments	1.9	1.2
Unrealized gains on cash flow hedges	1.6	0.1
Total other comprehensive income, net of tax	18.7	14.3
Total comprehensive income including non-controlling interests	59.8	49.9
Comprehensive income attributable to non-controlling interest	(1.8)	(1.5)
Comprehensive income attributable to MTI	$ 58.0	$ 48.4