CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2023	Apr. 03, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interest	$ 178.8	$ 212.6
Other comprehensive income (loss):
Foreign exchange translation adjustment	(4.3)	(32.6)
Hedge activity, net of tax	2.5	6.5
Pension and postretirement benefit adjustments, net of tax	1.5	4.2
Other comprehensive income (loss)	(0.3)	(21.9)
Comprehensive income (loss) including noncontrolling interest	178.5	190.7
Comprehensive (income) loss attributable to noncontrolling interest	0.1	0.0
Comprehensive income (loss) attributable to Teledyne	$ 178.4	$ 190.7