CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Consolidated net income	$ 42.5	$ 30.3	$ 99.6	$ 93.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	1.2	(35.8)	2.0	(66.1)
Pension and postretirement plan adjustments	1.2	1.6	3.8	4.6
Cash flow hedges:
Net derivative gains (losses) arising during the period	0.4	0.0	(0.3)	0.0
Total other comprehensive income (loss), net of tax	2.8	(34.2)	5.5	(61.5)
Total comprehensive income including non-controlling interests	45.3	(3.9)	105.1	32.4
Comprehensive income attributable to non-controlling interest	(0.4)	(0.2)	(2.2)	(1.9)
Comprehensive income attributable to MTI	$ 44.9	$ (4.1)	$ 102.9	$ 30.5