Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 52.0	$ 48.3	$ 137.9	$ 140.0
Other comprehensive (loss) income:
Foreign exchange translation adjustment	(7.7)	(33.9)	3.6	(62.3)
Hedge activity, net of tax	(0.9)	(1.4)	4.6	(1.9)
Pension and postretirement benefit adjustments, net of tax	3.3	4.8	10.8	13.7
Other comprehensive (loss) income	(5.3)	(30.5)	19.0	(50.5)
Comprehensive income	46.7	17.8	156.9	89.5
Noncontrolling interest	0.0	0.0	0.0	0.3
Comprehensive income attributable to Teledyne	$ 46.7	$ 17.8	$ 156.9	$ 89.8