Business Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	May 31, 2018	May 31, 2017
Cost of product sold
Net gain (loss) on undesignated commodity derivative contracts	$ 13.5	$ 1.6
Total cost of product sold	(998.5)	(940.2)
Selling, general and administrative expenses
Total selling, general and administrative expenses	(423.2)	(427.2)
Comparable Adjustments [Member]
Cost of product sold
Accelerated depreciation	(3.4)	0.0
Loss on inventory write-down	(1.5)	0.0
Flow through of inventory step-up	(0.6)	(7.0)
Total cost of product sold	8.4	(7.7)
Selling, general and administrative expenses
Deferred compensation	(16.3)	0.0
Restructuring and other strategic business development costs	(4.3)	(1.4)
Impairment of intangible assets	0.0	(86.8)
Costs associated with the sale of the Canadian wine business and related activities	0.0	(3.2)
Transaction, integration and other acquisition-related costs	0.0	(1.6)
Total selling, general and administrative expenses	(20.6)	(93.0)
Comparable Adjustments, Operating loss	(12.2)	(100.7)
Comparable Adjustments [Member] | Commodity derivative contracts [Member]
Cost of product sold
Net gain (loss) on undesignated commodity derivative contracts	15.4	(3.1)
Settlements of undesignated commodity derivative contracts	$ (1.5)	$ 2.4