Condensed Consolidated Balance Sheets $ in Millions	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 30, 2022 USD ($) $ / shares shares
Cash and cash equivalents	$ 480.0	$ 409.5
Accounts receivable, less allowance for doubtful accounts of $5.1 and $4.4	395.1	405.3
Inventories	895.4	947.6
Prepaid expenses and other current assets	120.7	273.4
Assets, Current	1,891.2	2,035.8
Property, plant and equipment, net	454.4	457.6
Intangible assets, net	2,710.6	2,843.8
Other assets	205.2	201.1
Assets	5,770.8	6,013.8
Current maturities of long-term debt	44.1	44.1
Accounts payable	86.4	114.0
Accrued payroll and payroll-related costs	35.4	49.5
Accrued interest	76.8	29.0
Medicaid lawsuit liability	16.5	16.5
Opioid-Related Litigation Settlement liability, Current	200.0	200.0
Accrued and other current liabilities	234.5	290.7
Liabilities, Current	693.7	743.8
Long-term debt	3,041.6	3,027.7
Opioid-Related Litigation Settlement liability	419.6	379.9
Acthar Gel-Related Settlement, Non-current	81.2	75.0
Pension and postretirement benefits	41.2	41.0
Environmental liabilities	35.6	35.8
Other income tax liabilities	18.5	18.2
Other liabilities	75.0	78.7
Liabilities	4,406.4	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	$ 509.4	$ 475.5
Ordinary shares, shares issued (in shares) | shares	13,170,932	13,170,932
Ordinary shares, shares authorized (in shares) | shares	500,000,000	500,000,000
Common Stock, Shares, Outstanding | shares	13,170,932	13,170,932
Ordinary shares, par value (in usd per share) | $ / shares	$ 0.01	$ 0.01
Additional Paid in Capital	$ 2,193.6	$ 2,191.0
Accumulated Other Comprehensive Income (Loss), Net of Tax	8.2	10.8
Retained deficit	(837.5)	(588.2)
Stockholders' Equity Attributable to Parent	1,364.4	1,613.7
Liabilities and Equity	5,770.8	6,013.8
Current Assets:
Cash and cash equivalents	480.0	409.5
Accounts receivable, less allowance for doubtful accounts of $5.1 and $4.4	395.1	405.3
Inventories	895.4	947.6
Prepaid expenses and other current assets	120.7	273.4
Total current assets	1,891.2	2,035.8
Property, plant and equipment, net	454.4	457.6
Intangible assets, net	2,710.6	2,843.8
Other assets	205.2	201.1
Total Assets	5,770.8	6,013.8
Current Liabilities:
Current maturities of long-term debt	44.1	44.1
Accounts payable	86.4	114.0
Accrued payroll and payroll-related costs	35.4	49.5
Accrued interest	76.8	29.0
Accrued and other current liabilities	234.5	290.7
Total current liabilities	693.7	743.8
Pension and postretirement benefits	41.2	41.0
Environmental liabilities	35.6	35.8
Other income tax liabilities	18.5	18.2
Other liabilities	75.0	78.7
Total Liabilities and Shareholders' Equity	5,770.8	6,013.8
Other liabilities	4,406.4	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	2,193.6	2,191.0
Retained deficit	(837.5)	(588.2)
Accumulated Other Comprehensive Income (Loss), Net of Tax	8.2	10.8
Total Shareholders' Equity	$ 1,364.4	$ 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