Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 16.7	$ (10.5)	$ (95.4)	$ 95.4
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax expense of $0.4, tax benefit of $0.2, tax expense of $0.0 and tax benefit of $0.1, respectively	5.1	(6.2)	0.4	(0.8)
Less: Reclassification adjustments included in net earnings	(1.5)	0.0	(1.5)	0.0
Foreign currency translation adjustments	3.6	(6.2)	(1.1)	(0.8)
Other comprehensive income (loss)	3.6	(6.2)	(1.1)	(0.8)
Comprehensive income (loss)	$ 20.3	$ (16.7)	$ (96.5)	$ 94.6