Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 48.3	$ 54.9	$ 140.0	$ 156.7
Other comprehensive income (loss):
Foreign exchange translation adjustment	(33.9)	(35.8)	(62.3)	(28.7)
Hedge activity and interest rate swap, net of tax	(1.4)	(1.9)	(1.9)	(0.4)
Pension and postretirement benefit adjustments, net of tax	4.8	3.1	13.7	8.0
Other comprehensive loss	(30.5)	(34.6)	(50.5)	(21.1)
Comprehensive income	17.8	20.3	89.5	135.6
Noncontrolling interest	0.0	0.7	0.3	0.8
Comprehensive income attributable to Teledyne	$ 17.8	$ 21.0	$ 89.8	$ 136.4