Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Net loss	$ (20.0)	$ (41.3)	$ (59.1)	$ (142.5)
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	1.1	4.4	(7.7)	(6.4)
Other comprehensive income (loss), before tax	6.3	(5.4)	13.5	(55.2)
Income tax provision related to items of other comprehensive income (loss)	0.0	0.0	0.0	0.0
Other comprehensive income (loss), net of tax	6.3	(5.4)	13.5	(55.2)
Comprehensive loss	(13.7)	(46.7)	(45.6)	(197.7)
Foreign Currency Derivatives
Other comprehensive income (loss), before tax:
Derivatives	0.7	(3.7)	4.3	1.2
Interest Rate Derivatives
Other comprehensive income (loss), before tax:
Derivatives	$ 4.4	$ (6.1)	$ 16.8	$ (50.0)