Condensed Consolidated Balance Sheets $ in Millions	Jun. 30, 2023 USD ($) $ / shares shares	Dec. 30, 2022 USD ($) $ / shares shares
Cash and cash equivalents	$ 480.6	$ 409.5
Accounts receivable, less allowance for doubtful accounts of $4.0 and $4.4	391.2	405.3
Inventories	860.5	947.6
Prepaid expenses and other current assets	123.2	273.4
Assets, Current	1,855.5	2,035.8
Property, plant and equipment, net	453.2	457.6
Intangible assets, net	2,581.3	2,843.8
Other assets	216.9	201.1
Assets	5,106.9	6,013.8
Current maturities of long-term debt	2,361.0	44.1
Accounts payable	83.4	114.0
Accrued payroll and payroll-related costs	51.7	49.5
Accrued interest	81.0	29.0
Medicaid lawsuit liability	21.4	16.5
Opioid-Related Litigation Settlement liability, Current	400.0	200.0
Accrued and other current liabilities	256.8	290.7
Liabilities, Current	3,255.3	743.8
Long-term debt	737.6	3,027.7
Opioid-Related Litigation Settlement liability	258.0	379.9
Acthar Gel-Related Settlement, Non-current	65.8	75.0
Pension and postretirement benefits	41.0	41.0
Environmental liabilities	35.2	35.8
Other income tax liabilities	18.9	18.2
Other liabilities	69.7	78.7
Liabilities	4,481.5	4,400.1
Preferred shares	0.0	0.0
Ordinary A shares	0.0	0.0
Ordinary shares	$ 0.1	$ 0.1
Preferred shares, par value (in usd per share) | $ / shares	$ 0.01	$ 0.01
Preferred shares, shares authorized (in shares) | shares	500,000,000	500,000,000
Preferred shares, shares issued (in shares) | shares	0	0
Preferred shares, shares outstanding (in shares) | shares	0	0
Deferred Tax Assets, Net	$ 0.0	$ 475.5
Ordinary shares, shares issued (in shares) | shares	13,353,356	13,170,932
Ordinary shares, shares authorized (in shares) | shares	500,000,000	500,000,000
Common Stock, Shares, Outstanding | shares	13,289,180	13,170,932
Ordinary shares, par value (in usd per share) | $ / shares	$ 0.01	$ 0.01
Treasury Stock, Common, Shares | shares	64,176	0
Additional Paid in Capital	$ 2,196.1	$ 2,191.0
Accumulated Other Comprehensive Income (Loss), Net of Tax	14.6	10.8
Retained deficit	(1,585.3)	(588.2)
Stockholders' Equity Attributable to Parent	625.4	1,613.7
Liabilities and Equity	5,106.9	6,013.8
Ordinary shares held in treasury at cost	(0.1)	0.0
Current Assets:
Cash and cash equivalents	480.6	409.5
Accounts receivable, less allowance for doubtful accounts of $4.0 and $4.4	391.2	405.3
Inventories	860.5	947.6
Prepaid expenses and other current assets	123.2	273.4
Total current assets	1,855.5	2,035.8
Property, plant and equipment, net	453.2	457.6
Intangible assets, net	2,581.3	2,843.8
Other assets	216.9	201.1
Total Assets	5,106.9	6,013.8
Current Liabilities:
Current maturities of long-term debt	2,361.0	44.1
Accounts payable	83.4	114.0
Accrued payroll and payroll-related costs	51.7	49.5
Accrued interest	81.0	29.0
Accrued and other current liabilities	256.8	290.7
Total current liabilities	3,255.3	743.8
Pension and postretirement benefits	41.0	41.0
Environmental liabilities	35.2	35.8
Other income tax liabilities	18.9	18.2
Other liabilities	69.7	78.7
Total Liabilities and Shareholders' Equity	5,106.9	6,013.8
Other liabilities	4,481.5	4,400.1
Shareholders' Equity:
Preferred shares	$ 0.0	$ 0.0
Preferred shares, shares outstanding (in shares) | shares	0	0
Ordinary A shares	$ 0.0	$ 0.0
Ordinary shares	0.1	0.1
Additional Paid in Capital	2,196.1	2,191.0
Retained deficit	(1,585.3)	(588.2)
Accumulated Other Comprehensive Income (Loss), Net of Tax	14.6	10.8
Total Shareholders' Equity	$ 625.4	$ 1,613.7
Ordinary A
Ordinary shares, shares issued (in shares) | shares	0	0.00
Ordinary shares, shares authorized (in shares) | shares	40,000	40,000
Shareholders' Equity:
Ordinary A shares, shares outstanding (in shares) | shares	0	0