Annual report pursuant to Section 13 and 15(d)

Significant Customers and Concentration of Credit Risk (Details)

v3.19.1
Significant Customers and Concentration of Credit Risk (Details)
12 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2017
Net sales [Member] | Customer concentration risk [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 32.70% 32.50% 32.60%
Net sales [Member] | Customer concentration risk [Member] | Southern Glazer's Wine and Spirits [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 12.90% 13.00% 14.10%
Accounts receivable [Member] | Credit concentration risk [Member] | Southern Glazer's Wine and Spirits [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 30.80% 28.10% 32.10%