v3.26.1
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES - Toggle Senior Secured Exchangeable Notes due 2030 and Senior Secured Exchangeable Notes due 2030 (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 23, 2026
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES        
Principal balance   $ 4,019.2   $ 4,024.2
Discount   (64.4)   (68.5)
Debt issuance costs   (76.7)   (64.4)
Accrued paid-in-kind interest   18.1   2.7
Discount, (Increase) Decrease to Net Earnings (Loss)   4.1 $ 4.2  
Debt issuance costs, (Increase) Decrease to Net Earnings (Loss)   5.0 1.9  
Bifurcated embedded derivative, (Increase) Decrease to Net Earnings (Loss)   (59.5) (45.1)  
6.00%/8.00% Cash/PIK Toggle Senior Secured Exchangeable Notes due 2030        
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES        
Principal balance   111.6   111.6
Discount   (25.8)   (26.4)
Debt issuance costs   (5.1)   (5.2)
Accrued paid-in-kind interest   2.6   0.4
Bifurcated embedded derivative   5.5   12.6
Carrying value   88.8   $ 93.0
Discount, (Increase) Decrease to Net Earnings (Loss)   0.6    
Debt issuance costs, (Increase) Decrease to Net Earnings (Loss)   0.1    
Accrued paid-in-kind interest, (Increase) Decrease to Net Earnings (Loss)   2.2    
Bifurcated embedded derivative, (Increase) Decrease to Net Earnings (Loss)   (7.1) $ (45.1)  
Carrying value, (Increase) Decrease to Net Earnings (Loss)   $ (4.2)    
Interest rate cash (as a percent)   6.00% 6.00% 6.00%
PIK interest rate (as a percent)   8.00% 8.00% 8.00%
Effective interest rate   15.12%    
Senior Secured Exchangeable Notes due 2030        
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES        
Principal balance   $ 155.8   $ 155.8
Discount   (55.0)   (57.4)
Debt issuance costs   (12.6)   (14.8)
Bifurcated embedded derivative   62.2   131.9
Carrying value   150.4   $ 215.5
Discount, (Increase) Decrease to Net Earnings (Loss)   2.4    
Debt issuance costs, (Increase) Decrease to Net Earnings (Loss)   0.6    
Bifurcated embedded derivative, (Increase) Decrease to Net Earnings (Loss)   (52.4)    
Carrying value, (Increase) Decrease to Net Earnings (Loss)   (49.4)    
Debt issuance costs, Deferred Charges Activity   1.6    
Bifurcated embedded derivative, Deferred Charges Activity   (1.6)    
Carrying value, Deferred Charges Activity   0.0    
Bifurcated embedded derivative, Consent Fee Paid With Common Stock   (15.7)    
Carrying value, Consent Fee Paid With Common Stock   $ (15.7)    
Interest rate cash (as a percent)   1.50%   1.50%
Effective interest rate   16.54%    
Consent fees paid in shares (in shares) 15,378,194