Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Components of income (loss) from continuing operations before income taxes
Domestic									$ 6.8	$ 2.2	$ (60.5)
Foreign									8.9	6.5	3.4
Income (loss) from continuing operations before income taxes									15.7	8.7	(57.1)
Federal income taxes:
Current									(0.2)	(0.4)	(2.9)
Deferred									(3.9)	(1.8)	(9.0)
Total Federal									(4.1)	(2.2)	(11.9)
State and local income taxes
Current									1.0	0.4	0.5
Deferred									(0.9)	1.4	(0.3)
Total State and local									0.1	1.8	0.2
Foreign income taxes:
Current									9.0	4.8	2.0
Deferred									(0.2)	0.2	(0.5)
Total Foreign									8.8	5.0	1.5
Total	$ 1.0	$ 2.8	$ 2.5	$ (1.5)	$ 0.2	$ 3.4	$ 0.1	$ 0.9	$ 4.8	$ 4.6	$ (10.2)