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Share-Based Awards, Purchase Plans and Compensation Cost (Narrative) (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 29, 2023 USD ($) plan $ / shares shares	Dec. 30, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Apr. 30, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award
Award expiration period	10 years
Stock Appreciation Plan Expense | $	$ 2.0	$ (0.2)	$ 3.1
Intrinsic value of exercisable option shares | $	$ 329.6
Document Period End Date	Dec. 29, 2023
Exercisable option weighted average contractual term	4 years 2 months 12 days
Share options vested and expected to vest	9,900,000
Aggregate intrinsic value of share options vested and expected to vest | $	$ 373.2
Weighted average exercise price of share options vested and expected to vest (per share) | $ / shares	$ 49.09
Weighted average contractual term of share options vested and expected to vest	6 years 3 months 18 days
Employee stock purchase plan shares granted	322,764	316,250	415,995
Total shares authorized	31,000,000
Available for future issuance	16,166,000
Unrecognized compensation cost related to unvested options | $	$ 17.3
Weighted average recognition period for unvested options	2 years 3 months 18 days
Stock Incentive Plan (2019)
Share-based Compensation Arrangement by Share-based Payment Award
Total shares authorized	10,000,000			10,000,000
Available for future issuance	4,743,000
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	11,423,000
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	11,150	12,055	12,070
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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