Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
Feb. 29, 2024
Feb. 28, 2023
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]    
Operating loss carryforwards $ 3,700.0  
Operating loss carryforwards subject to expire by fiscal 2027 2,200.0  
Operating loss carryforwards subject to expire between fiscal 2028 and fiscal 2041 900.0  
Operating loss carryforwards not subject to expiration 600.0  
Capital loss carryforwards 1,600.0  
Unrecognized tax benefit liabilities 488.5 $ 402.3
Unrecognized tax benefit liabilities that would impact effective tax rate if recognized 416.1 $ 344.3
Minimum    
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]    
Estimate of change in unrecognized tax benefit liabilities reasonably possible as a result of examination or expiration of statutes of limitation 70.0  
Maximum    
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]    
Estimate of change in unrecognized tax benefit liabilities reasonably possible as a result of examination or expiration of statutes of limitation $ 160.0