v3.24.1.u1
Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 28, 2024
Dec. 31, 2023
Mar. 30, 2023
Dec. 31, 2023
Operating activities        
Net loss $ (616.7)   $ (281.2)  
Adjustments to reconcile net loss to net cash used in operating activities        
Depreciation and amortization expense 77.9   79.9  
Amortization of deferred financing fees 1.7   1.7  
Accretion of customer supply agreement 0.8   0.6  
Employee Benefit and Share-based Payment Arrangement, Noncash 10.8   9.0  
Loss on Derivative Instruments, Pretax (1.2)   3.4  
(Gain) loss from foreign currency transactions (5.9)   4.0  
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property (0.7)   (0.1)  
Deferred taxes 9.0   (16.4)  
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits (2.8)   63.6  
Grant liability amortization (0.3)   (0.3)  
Unrealized Gain (Loss) on Investments 0.1   0.7  
Increase (Decrease) in Forward Provision 378.1   6.9  
Changes in assets and liabilities        
Accounts receivable, net 7.4   (116.6)  
Inventory, net (34.8)   (75.8)  
Accounts payable and accrued liabilities 99.7   152.9  
Profit sharing/deferred compensation 6.7   (18.4)  
Advance payments 12.2   (3.3)  
Income taxes receivable/payable 2.7   11.8  
Pension plans employer contributions (0.5)   (3.0)  
Other (2.3)   (8.4)  
Net cash used in operating activities (415.6)   (46.2)  
Investing activities        
Purchase of property, plant, and equipment (28.7)   (22.9)  
Payments to Acquire Businesses, Net of Cash Acquired   $ (31.3)    
Net cash used in investing activities (28.7)   (22.9)  
Financing activities        
Proceeds from Lines of Credit 0.0   0.7  
Principal payments of debt (16.5)   (15.5)  
Payment, Tax Withholding, Share-based Payment Arrangement (4.5)   (4.8)  
Debt issuance and financing costs (0.5)   (0.5)  
Proceeds from Other Debt       $ 180.0
Net cash used in financing activities (21.5)   (20.1)  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect (466.1)   (88.3)  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance 845.9   678.4 678.4
Cash, cash equivalents, and restricted cash, end of period 379.8 845.9 590.1 845.9
Cash and Cash Equivalents, at Carrying Value, Ending Balance 352.0 823.5 567.8 823.5
Reconciliation of Cash, Cash Equivalents, and Restricted Cash [Abstract]        
Restricted Cash, Current 0.1 0.1 0.2 0.1
Restricted Cash, Noncurrent 27.7 22.3 22.1 $ 22.3
Increase (Decrease) in Income Taxes Payable 2.7   11.8  
Increase (Decrease) in Contract with Customer, Liability (48.0)   (13.8)  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan (0.7)   179.0  
Payments to Acquire Businesses, Net of Cash Acquired   $ 31.3    
Increase (Decrease) in Contract with Customer, Asset 309.8   22.0  
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations (0.3)   0.9  
Gain (Loss) on Contract Termination (0.5)   (0.5)  
Increase (Decrease) in Deferred Liabilities (0.5)   (3.0)  
Proceeds from Lines of Credit 0.0   0.7  
Increase (Decrease) in Customer Advances 12.2   (3.3)  
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest $ (616.6)   $ (281.3)