Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Information (Unaudited) (Details)

v2.4.1.9
Selected Quarterly Financial Information (Unaudited) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Feb. 28, 2015
Nov. 30, 2014
Aug. 31, 2014
May 31, 2014
Feb. 28, 2014
Nov. 30, 2013
Aug. 31, 2013
May 31, 2013
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Summary of selected quarterly financial information                      
Net sales $ 1,356.2stz_SalesRevenueNetOfExciseTaxes $ 1,541.7stz_SalesRevenueNetOfExciseTaxes $ 1,604.1stz_SalesRevenueNetOfExciseTaxes $ 1,526.0stz_SalesRevenueNetOfExciseTaxes $ 1,291.2stz_SalesRevenueNetOfExciseTaxes $ 1,443.3stz_SalesRevenueNetOfExciseTaxes $ 1,459.8stz_SalesRevenueNetOfExciseTaxes $ 673.4stz_SalesRevenueNetOfExciseTaxes $ 6,028.0stz_SalesRevenueNetOfExciseTaxes $ 4,867.7stz_SalesRevenueNetOfExciseTaxes $ 2,796.1stz_SalesRevenueNetOfExciseTaxes
Gross profit 597.6us-gaap_GrossProfit 638.9us-gaap_GrossProfit 672.0us-gaap_GrossProfit 670.1us-gaap_GrossProfit 548.9us-gaap_GrossProfit 609.7us-gaap_GrossProfit 577.0us-gaap_GrossProfit 256.1us-gaap_GrossProfit 2,578.6us-gaap_GrossProfit 1,991.7us-gaap_GrossProfit 1,108.3us-gaap_GrossProfit
Net income attributable to CBI $ 214.6us-gaap_NetIncomeLoss $ 222.2us-gaap_NetIncomeLoss $ 195.8us-gaap_NetIncomeLoss $ 206.7us-gaap_NetIncomeLoss $ 157.2us-gaap_NetIncomeLoss $ 211.0us-gaap_NetIncomeLoss $ 1,522.0us-gaap_NetIncomeLoss $ 52.9us-gaap_NetIncomeLoss $ 839.3us-gaap_NetIncomeLoss $ 1,943.1us-gaap_NetIncomeLoss $ 387.8us-gaap_NetIncomeLoss
Class A Common Stock [Member]                      
Net income per common share attributable to CBI:                      
Net income per common share attributable to CBI, basic (in dollars per share) $ 1.12us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.16us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.03us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.09us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 0.84us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.13us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 8.18us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 0.29us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 4.40us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 10.45us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 2.15us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Net income per common share attributable to CBI, diluted (in dollars per share) $ 1.06us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.10us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 0.98us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.03us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 0.79us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 1.07us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 7.74us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 0.27us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 4.17us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 9.83us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 2.04us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Class B Convertible Common Stock [Member]                      
Net income per common share attributable to CBI:                      
Net income per common share attributable to CBI, basic (in dollars per share) $ 1.02us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 1.06us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.93us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.99us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.76us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 1.03us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 7.43us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.26us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 4.00us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 9.50us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 1.96us-gaap_EarningsPerShareBasic
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Net income per common share attributable to CBI, diluted (in dollars per share) $ 0.98us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 1.01us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.90us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.95us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.73us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.98us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 7.11us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 0.25us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 3.83us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 9.04us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
$ 1.87us-gaap_EarningsPerShareDiluted
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember