v3.26.3
Comprehensive Income (Loss) Attributable to CBI - Accumulated Other Comprehensive Income (Loss), Net of Income Tax Effect (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Aug. 31, 2026
May 31, 2026
Aug. 31, 2025
May 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]            
Stockholders' equity, beginning of period   $ 8,082.4     $ 8,082.4  
Other comprehensive income (loss):            
Other comprehensive income (loss) attributable to CBI, net of tax amount $ 158.5 (88.8) $ 228.9 $ 364.3    
Stockholders' equity, period end 8,586.9       8,586.9  
Accumulated Other Comprehensive Income (Loss)            
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]            
Stockholders' equity, beginning of period   423.2     423.2  
Other comprehensive income (loss):            
Other comprehensive income (loss) before reclassification adjustments         134.7  
Amounts reclassified from accumulated other comprehensive income (loss)         (68.4)  
Other comprehensive income (loss) attributable to CBI, net of tax amount 151.7 (85.4) 219.7 $ 350.7 66.3 $ 570.4
Stockholders' equity, period end 489.5       489.5  
Accumulated Other Comprehensive Income (Loss) | Share of OCI of Equity Method Investments            
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]            
Stockholders' equity, beginning of period   (0.5)     (0.5)  
Other comprehensive income (loss):            
Other comprehensive income (loss) before reclassification adjustments 0.0   0.0   0.0 0.0
Amounts reclassified from accumulated other comprehensive income (loss) 0.1   (1.3)   0.6 (1.1)
Other comprehensive income (loss) attributable to CBI, net of tax amount 0.1   (1.3)   0.6 (1.1)
Stockholders' equity, period end 0.1       0.1  
Foreign Currency Translation Adjustments            
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]            
Stockholders' equity, beginning of period   143.8     143.8  
Other comprehensive income (loss):            
Other comprehensive income (loss) before reclassification adjustments 119.1   164.8   55.0 408.3
Amounts reclassified from accumulated other comprehensive income (loss) 0.0   0.0   0.0 0.0
Other comprehensive income (loss) attributable to CBI, net of tax amount 119.1   164.8   55.0 408.3
Stockholders' equity, period end 198.8       198.8  
Unrealized Net Gain (Loss) on Derivative Instruments            
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]            
Stockholders' equity, beginning of period   285.4     285.4  
Other comprehensive income (loss):            
Other comprehensive income (loss) before reclassification adjustments         79.7  
Amounts reclassified from accumulated other comprehensive income (loss)         (69.0)  
Other comprehensive income (loss) attributable to CBI, net of tax amount         10.7  
Stockholders' equity, period end 296.1       296.1  
Pension/ Postretirement Adjustments            
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]            
Stockholders' equity, beginning of period   $ (5.5)     (5.5)  
Other comprehensive income (loss):            
Other comprehensive income (loss) before reclassification adjustments (0.1)   (0.1)   0.0 (0.1)
Amounts reclassified from accumulated other comprehensive income (loss) 0.0   0.0   0.0 0.0
Other comprehensive income (loss) attributable to CBI, net of tax amount (0.1)   $ (0.1)   0.0 $ (0.1)
Stockholders' equity, period end $ (5.5)       $ (5.5)