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Share-Based Awards, Purchase Plans and Compensation Cost (Narrative) (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 27, 2024 USD ($) plan $ / shares shares	Dec. 29, 2023 USD ($) shares	Dec. 30, 2022 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award
Award expiration period	10 years
Stock Appreciation Plan Expense | $	$ 2.0	$ 2.0	$ 0.2
Intrinsic value of exercisable option shares | $	$ 243.0
Document Period End Date	Dec. 27, 2024
Exercisable option weighted average contractual term	4 years
Share options vested and expected to vest	9,100,000
Aggregate intrinsic value of share options vested and expected to vest | $	$ 265.0
Weighted average exercise price of share options vested and expected to vest (per share) | $ / shares	$ 55.60
Weighted average contractual term of share options vested and expected to vest	5 years 2 months 12 days
Employee stock purchase plan shares granted	330,413	322,764	316,250
Total shares authorized	36,000,000
Available for future issuance	20,205,000
Unrecognized compensation cost related to unvested options | $	$ 16.0
Weighted average recognition period for unvested options	2 years 2 months 12 days
Stock Incentive Plan (2019)
Share-based Compensation Arrangement by Share-based Payment Award
Total shares authorized	15,000,000
Available for future issuance	9,095,000
Employee Stock Purchase Plan (2006)
Share-based Compensation Arrangement by Share-based Payment Award
Share purchase price as percentage of fair value	85.00%
Total shares authorized	21,000,000
Available for future issuance	11,110,000
Stock purchase plan discount percentage	15.00%
Previous Share-Based Plans
Share-based Compensation Arrangement by Share-based Payment Award
Number of plans replaced by subsequent plans | plan	2
Available for future issuance	0
Director | Stock Incentive Plan (2019)
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued under the plan	9,940	11,150	12,055
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	3 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	4 years

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