Debt (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 30, 2022	Jun. 16, 2022
Debt Instrument
Debt Instrument, Face Amount	$ 3,512.0	$ 3,534.1
10.00% First Lien Senior Notes
Debt Instrument
Debt Instrument, Face Amount			$ 495.0
2017 Replacement Term Loan
Debt Instrument
Debt Instrument, Face Amount	1,356.7
2018 Replacement Term Loan
Debt Instrument
Debt Instrument, Face Amount	$ 360.1