Share-Based Awards - Total Compensation Expense Related to Stock Options, Restricted Stock Units and Stock Performance Awards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Dec. 25, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	$ 50.8	$ 71.9	$ 81.3
Income tax benefit	7.2	9.2	9.0
Total stock compensation expense after income taxes	43.6	62.7	72.3
Stock performance awards
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	(6.4)	15.8	9.6
Restricted stock units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	51.0	47.8	60.7
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	4.4	7.0	8.9
Non-employee awards
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	1.8	1.3	2.1
Product development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	10.2	7.0	4.8
Selling, distribution and administration
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense before income taxes	$ 40.6	$ 64.9	$ 76.5