Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Dec. 30, 2022	Jun. 16, 2022	Dec. 31, 2021	Dec. 25, 2020
Restricted Cash and Investments, Current	$ 20.6	$ 113.0	$ 24.0	$ 20.2
Restricted Cash and Investments, Noncurrent	36.6	36.4	36.2	36.2
Cash and cash equivalents	409.5	297.9	1,345.0	1,070.6
Cash and Cash Equivalents, Including Restricted Cash	466.7	447.3	1,405.2	1,127.0
Effect of currency rate changes on cash	(1.1)	(3.9)	(1.9)	2.3
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	19.4	(957.9)	278.2	304.4
Cash Flows from Operating Activities:
Net loss	(598.1)	(313.1)	(717.4)	(944.6)
Adjustments to reconcile net cash provided by operating activities:
Depreciation and amortization	347.5	321.8	675.8	885.2
Share-based compensation	1.4	1.7	10.2	25.3
Deferred income taxes	(24.9)	(473.0)	(59.9)	385.3
Non-cash impairment charges	0.0	0.0	154.9	63.5
Losses (gains) on divestiture	0.0	0.0	(0.8)	(16.6)
Other non-cash items	16.8	35.3	(1.6)	(21.7)
Reorganization items, net	0.0	425.4	22.5	10.2
Accretion Expense	139.2	0.0	0.0	0.0
Changes in assets and liabilities, net of the effects of acquisitions:
Accounts receivable, net	(18.1)	49.8	(98.2)	37.9
Inventories	267.9	(33.2)	14.0	(51.1)
Accounts payable	8.1	(3.6)	(1.1)	15.7
Increase (Decrease) in Accrued Consulting	(90.7)	0.1	14.3	38.1
Income taxes	(30.1)	(26.9)	108.5	(433.8)
Opioid-related litigation settlement liability	0.0	0.0	125.0	0.0
Medicaid lawsuit	0.0	0.0	(4.2)	638.9
Payment of claims	0.0	(629.0)	0.0	0.0
Other	28.1	2.4	(43.4)	(133.4)
Net cash from operating activities	47.1	(642.3)	455.4	498.9
Cash Flows from Investing Activities:
Capital expenditures	(28.8)	(33.4)	(55.3)	(47.7)
Proceeds (payments) related to divestiture, net of cash	70.0	0.0	15.7	(0.7)
Other	(13.7)	0.4	(1.8)	37.2
Net cash from investing activities	27.5	(33.0)	(37.8)	(11.2)
Cash Flows from Financing Activities:
Issuance of external debt	0.0	650.0	0.0	0.0
Repayment of external debt	(50.1)	(904.6)	(137.5)	(139.5)
Debt financing costs	0.0	(24.1)	0.0	(9.4)
Other	(4.0)	0.0	0.0	(36.7)
Net Cash Provided by (Used in) Financing Activities	(54.1)	(278.7)	(137.5)	(185.6)
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	164.1	111.5	243.2	256.1
Cash paid (received) for income taxes, net	$ 3.0	$ 3.0	$ (160.0)	$ 39.9