Debt (Schedule of Applicable Interest Rates on Variable-rate Debt) (Details) - USD ($) $ in Millions		Jun. 28, 2024	Dec. 29, 2023	Nov. 14, 2023
Schedule of Applicable Interest Rate on Variable-rate Debt [Line Items]
Total Debt		$ 1,748.8	$ 1,765.3
Debt Instrument, Face Amount		$ 1,643.5	$ 1,647.8
Fourteen Point Seven Five Percent Second-Out Takeback Notes
Schedule of Applicable Interest Rate on Variable-rate Debt [Line Items]
Debt Instrument, Face Amount				$ 778.6
First-Out Takeback Term Loan Due November 2028
Schedule of Applicable Interest Rate on Variable-rate Debt [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	[1]	11.34%
Debt Instrument, Face Amount				229.4
Second-Out Takeback Term Loan Due November 2028
Schedule of Applicable Interest Rate on Variable-rate Debt [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	[1]	13.34%
Debt Instrument, Face Amount				$ 642.0
Fixed-rate instruments
Schedule of Applicable Interest Rate on Variable-rate Debt [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time		14.75%

[1] Includes the impact of the interest rate cap agreement, which is discussed further in Note 13.