Consolidated Balance Sheets $ in Millions	Dec. 29, 2023 USD ($) $ / shares shares	Dec. 30, 2022 USD ($) $ / shares shares
Current Assets:
Cash and cash equivalents	$ 262.7	$ 409.5
Accounts receivable, less allowance for doubtful accounts of $6.5 and $4.4	377.5	405.3
Inventories	982.7	947.6
Prepaid expenses and other current assets	138.9	273.4
Total current assets	1,761.8	2,035.8
Property, plant and equipment, net	321.7	457.6
Intangible assets, net	608.4	2,843.8
Deferred income taxes	801.0	475.5
Other assets	240.7	201.1
Total Assets	3,733.6	6,013.8
Current Liabilities:
Current maturities of long-term debt	6.5	44.1
Accounts payable	100.4	114.0
Accrued payroll and payroll-related costs	82.8	49.5
Accrued interest	20.1	29.0
Acthar Gel-Related Settlement liability	21.5	16.5
Opioid-Related Litigation Settlement liability	0.0	200.0
Accrued and other current liabilities	269.9	290.7
Total current liabilities	501.2	743.8
Long-term debt	1,755.9	3,027.7
Acthar Gel-Related Settlement liability	128.5	75.0
Opioid-Related Litigation Settlement liability	0.0	379.9
Pension and postretirement benefits	40.6	41.0
Environmental liabilities	35.1	35.8
Deferred income taxes	0.0	0.3
Other income tax liabilities	19.6	18.2
Other liabilities	92.5	78.7
Total Liabilities	2,573.4	$ 4,400.1
Preferred shares, shares outstanding (in shares) | shares		0
Preferred shares, shares issued (in shares) | shares		0
Preferred shares, shares authorized (in shares) | shares		500,000,000
Preferred shares, par value (in usd per share) | $ / shares		$ 0.01
Shareholders' Equity:
Additional paid-in capital	1,194.6	$ 2,191.0
Retained deficit	(38.2)	(588.2)
Accumulated other comprehensive income	3.6	10.8
Total Shareholders' Equity	1,160.2	1,613.7
Total Liabilities and Shareholders' Equity	$ 3,733.6	$ 6,013.8
Ordinary A shares, shares authorized (in shares) | shares	25,000	40,000
Ordinary A shares, shares issued (in shares) | shares	0	0
Ordinary A shares, shares outstanding (in shares) | shares	0	0
Ordinary shares, shares authorized (in shares) | shares	500,000,000	500,000,000
Predecessor Reorganization
Current Liabilities:
Preferred shares, shares outstanding (in shares) | shares		0
Preferred shares, shares issued (in shares) | shares		0
Preferred shares, shares authorized (in shares) | shares		500,000,000
Preferred shares, par value (in usd per share) | $ / shares		$ 0.20
Shareholders' Equity:
Preferred Stock, Value, Outstanding	$ 0.0	$ 0.0
Common Stock, Other Value, Outstanding	0.0	0.0
Common Stock, Value, Outstanding	$ 0.0	$ 0.1
Ordinary shares, shares authorized (in shares) | shares		500,000,000
Successor
Current Liabilities:
Preferred shares, shares outstanding (in shares) | shares	0
Preferred shares, shares issued (in shares) | shares	0
Preferred shares, shares authorized (in shares) | shares	500,000,000
Preferred shares, par value (in usd per share) | $ / shares	$ 0.01
Shareholders' Equity:
Common Stock, Other Value, Outstanding	$ 0.0	$ 0.0
Common Stock, Value, Outstanding	$ 0.2	$ 0.0
Ordinary shares, shares authorized (in shares) | shares	500,000,000