Condensed Consolidated Balance Sheets $ in Millions	Mar. 28, 2025 USD ($) $ / shares shares	Dec. 27, 2024 USD ($) $ / shares shares
Cash and cash equivalents	$ 422.2	$ 382.6
Accounts receivable, less allowance for doubtful accounts of $4.1 and $6.2	402.7	395.3
Inventories	633.7	664.9
Prepaid expenses and other current assets	175.8	186.3
Total current assets	1,634.4	1,629.1
Property, plant and equipment, net	404.1	390.6
Intangible assets, net	406.1	419.4
Other assets	203.1	211.7
Total Assets	3,309.5	3,302.6
Current maturities of long-term debt	3.9	3.9
Accounts payable	79.0	57.8
Accrued payroll and payroll-related costs	52.1	108.1
Accrued interest	26.9	9.2
Medicaid lawsuit liability	21.3	21.3
Accrued and other current liabilities	274.5	231.1
Total current liabilities	457.7	431.4
Long-term debt	905.4	909.5
Acthar Gel-Related Settlement, Non-current	131.4	126.5
Pension and postretirement benefits	26.5	26.5
Environmental liabilities	34.3	34.3
Other income tax liabilities	26.2	25.7
Other liabilities	98.0	102.9
Other liabilities	1,679.5	1,656.8
Ordinary A shares	0.0	0.0
Ordinary shares	$ 0.2	$ 0.2
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	$ 661.8	$ 651.8
Ordinary shares, shares issued (in shares) | shares	19,762,306	19,696,335
Ordinary shares, shares authorized (in shares) | shares	500,000,000	500,000,000
Common Stock, Shares, Outstanding | shares	19,736,759	19,696,335
Ordinary shares, par value (in usd per share) | $ / shares	$ 0.01	$ 0.01
Ordinary shares held in treasury at cost	$ (1.9)	$ 0.0
Additional Paid in Capital	1,209.6	1,199.8
Accumulated Other Comprehensive Income (Loss), Net of Tax	9.2	6.1
Retained earnings	412.9	439.7
Total Shareholders' Equity	1,630.0	1,645.8
Total Liabilities and Shareholders' Equity	$ 3,309.5	$ 3,302.6
Ordinary A
Ordinary shares, shares issued (in shares) | shares	0	0.00
Ordinary shares, shares authorized (in shares) | shares	25,000	25,000
Common Stock, Shares, Outstanding | shares	0	0