Comprehensive Income (Loss) Attributable to CBI - Accumulated Other Comprehensive Income (Loss), Net of Income Tax Effect (Details) - USD ($) $ in Millions	3 Months Ended
	May 31, 2025	May 31, 2024
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]
Stockholders' equity, beginning of period	$ 6,882.0
Other comprehensive income (loss):
Other comprehensive income (loss) attributable to CBI, net of tax amount	364.3	$ (8.7)
Stockholders' equity, period end	7,265.5
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]
Stockholders' equity, beginning of period	(662.7)
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassification adjustments	355.7
Amounts reclassified from accumulated other comprehensive income (loss)	(5.0)
Other comprehensive income (loss) attributable to CBI, net of tax amount	350.7	(9.0)
Stockholders' equity, period end	(312.0)
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	(0.3)
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassification adjustments	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	0.2	(10.3)
Other comprehensive income (loss) attributable to CBI, net of tax amount	0.2	(10.3)
Stockholders' equity, period end	(0.1)
Foreign Currency Translation Adjustments
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]
Stockholders' equity, beginning of period	(683.8)
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassification adjustments	243.5	13.5
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Other comprehensive income (loss) attributable to CBI, net of tax amount	243.5	13.5
Stockholders' equity, period end	(440.3)
Unrealized Net Gain (Loss) on Derivative Instruments
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassification adjustments	114.5
Amounts reclassified from accumulated other comprehensive income (loss)	(5.2)
Other comprehensive income (loss) attributable to CBI, net of tax amount	109.3
Pension/ Postretirement Adjustments
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]
Stockholders' equity, beginning of period	(0.4)
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassification adjustments	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	0.0
Other comprehensive income (loss) attributable to CBI, net of tax amount	0.0
Stockholders' equity, period end	(0.4)
Accumulated Net Gain (Loss) on Derivative Instruments
Accumulated other comprehensive income (loss), net of income tax effect [Roll Forward]
Stockholders' equity, beginning of period	21.8
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassification adjustments	112.2	24.9
Amounts reclassified from accumulated other comprehensive income (loss)	(5.2)	(37.1)
Other comprehensive income (loss) attributable to CBI, net of tax amount	107.0	$ (12.2)
Stockholders' equity, period end	$ 128.8