Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 41.1	$ 83.8	$ (112.1)	$ 105.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax benefit of $0.5, tax expense of $0.0, tax benefit of $0.4 and tax expense of $0.1, respectively	2.7	6.9	(4.7)	5.4
Less: Reclassification adjustments included in net earnings	0.0	0.0	0.0	0.0
Foreign currency translation adjustments	2.7	6.9	(4.7)	5.4
Other comprehensive income (loss)	2.7	6.9	(4.7)	5.4
Comprehensive income (loss)	$ 43.8	$ 90.7	$ (116.8)	$ 111.3