v3.25.1
Income Taxes (Details Textual) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Income Tax Details [Line Items]          
Deferred tax assets, valuation allowance $ (628) $ (628) $ (696) $ (711) $ (763)
Income tax provision (benefit)   159 218 147  
Net operating loss carryforwards 635 635      
Tax credit carryforward 152 152 164    
Operating loss carryforwards, valuation allowance 431 431 485    
Tax credit carryforward, valuation allowance 102 102 115    
Other deferred taxes, valuation allowance 95 95 96    
Operating loss carryforwards     683    
Undistributed earnings of foreign subsidiaries (outside Canada) 4,000 4,000      
Other deferred tax assets 38 38 38    
Unrecognized tax benefits 68 68 80 73 $ 71
Accrued income tax penalties and interest 7 7 9 9  
Taxes payable 64 64 131    
Taxes payable, current $ 48 48 80    
Tax credits   (35) (36) (36)  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount   29      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 25.00%        
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability   10      
New York          
Income Tax Details [Line Items]          
Income tax credits and adjustments   3      
Deferred tax assets, valuation allowance $ (3) (3)      
Canada          
Income Tax Details [Line Items]          
Income tax credits and adjustments   18      
Deferred tax assets, valuation allowance (414) (414)      
Income tax provision (benefit)   (74)      
Tax credit carryforward 13 13      
Operating loss carryforwards 308 308      
Other deferred tax assets $ 93 93      
Brazil          
Income Tax Details [Line Items]          
Income tax provision (benefit)     $ (13) $ (15)  
United States          
Income Tax Details [Line Items]          
Income tax credits and adjustments   10      
ITALY          
Income Tax Details [Line Items]          
Income tax provision (benefit)   $ 10