Net Income (Loss) Per Common Share Attributable to CBI (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	May 31, 2025	May 31, 2024
Earnings per share reconciliation
Net income (loss) attributable to CBI	$ 516.1	$ 877.0
Class A Stock
Earnings per share reconciliation
Net income (loss) attributable to CBI	$ 516.1	$ 877.0
Weighted average number of shares outstanding reconciliation
Weighted average common shares outstanding - basic (in shares)	177,801	182,766
Stock-based awards, primarily stock options (in shares)	190	695
Weighted average common shares outstanding - diluted (in shares)	177,991	183,461
Basic and diluted net income (loss) per common share attributable to CBI
Net income (loss) per common share attributable to CBI - basic (in dollars per share)	$ 2.90	$ 4.80
Net income (loss) per common share attributable to CBI - diluted (in dollars per share)	$ 2.90	$ 4.78