Net (Loss) Income per Common Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Numerator (in millions of U.S. dollars):
Net loss from continuing operations	$ (10.2)	$ (27.4)
Net income from discontinued operations	0.0	30.9
Net (loss) income	$ (10.2)	$ 3.5
Denominator (in thousands):
Weighted average common shares outstanding - basic (in shares)	160,634	141,139
Basic Earnings Per Share:
Continuing operations (in USD per share)	$ (0.06)	$ (0.19)
Discontinued operations (in USD per share)	0	0.22
Net (loss) income (in USD per share)	$ (0.06)	$ 0.02
Denominator (in thousands):
Weighted average common shares outstanding - basic (in shares)	160,634	141,139
Weighted average common shares outstanding - diluted (in shares)	160,634	141,139
Continued operations (in USD per share)	$ (0.06)	$ (0.19)
Discontinued operations (in USD per share)	0	0.22
Net (loss) income (in USD per share)	$ (0.06)	$ 0.02
Performance-based RSUs
Denominator (in thousands):
Dilutive effect (in shares)	0	0
Time-based RSUs
Denominator (in thousands):
Dilutive effect (in shares)	0	0
Stock Options
Denominator (in thousands):
Dilutive effect (in shares)	0	0