Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 190.9	$ 195.5	$ 215.6
Other comprehensive income (loss):
Foreign exchange translation adjustment		(24.6)	(83.6)	(58.2)
Hedge activity, net of tax		3.9	(1.4)	(2.0)
Pension and postretirement benefit adjustments, net of tax		(17.3)	(5.0)	(97.5)
Net other comprehensive income (loss)	[1]	(38.0)	(90.0)	(157.7)
Comprehensive income		152.9	105.5	57.9
Noncontrolling interest		0.0	0.3	2.1
Comprehensive income attributable to Teledyne, net of tax		152.9	105.8	60.0
Other comprehensive income (loss), income tax expense (benefit)		$ (8.0)	$ (3.5)	$ 22.6

[1] Net of income tax benefit of $8.0 million in 2016, income tax benefit of $3.5 million for 2015 and income tax expense of $22.6 million for 2014.