SCHEDULE II CONDENSED FINANCIAL INFORMATION OF REGISTRANT PARENT COMPANY ONLY (STATEMENTS OF INCOME) (Parenthetical) (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 28, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements Captions [Line Items]
Income from discontinued operation, income tax expense		$ 0.5		$ (0.2)
Chaucer [Member]
Condensed Financial Statements Captions [Line Items]
Income from discontinued operation, income tax expense	$ (42.5)		$ 5.3	$ (42.5)	[1]

[1] The income tax expense represents the current tax obligation on the sale and the derecognition of deferred tax assets that were no longer likely to be realized.