Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 25, 2020	Dec. 27, 2019
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 4.5	$ 4.0	$ 5.0
Charged to Operations	1.2	1.2	1.5
Additions and Other	0.0	0.0	0.0
Deductions	(1.0)	(0.7)	(2.5)
Balance at End of Period	4.7	4.5	4.0
Sales Returns and Allowances
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	235.4	337.4	405.4
Charged to Operations	2,166.0	2,154.3	2,437.7
Additions and Other	0.0	536.0	0.0
Deductions	(2,128.6)	(2,792.3)	(2,505.7)
Balance at End of Period	272.8	235.4	337.4
Tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	6,110.8	3,131.5	2,604.9
Charged to Operations	233.4	2,979.3	526.6
Additions and Other	0.0	0.0	0.0
Deductions	0.0	0.0	0.0
Balance at End of Period	$ 6,344.2	$ 6,110.8	$ 3,131.5