Annual report pursuant to Section 13 and 15(d)

Business Segment Information (Details)

v2.4.1.9
Business Segment Information (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Cost of product sold      
Net gain (loss) on undesignated commodity derivative contracts $ (35.3)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet $ (2.1)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet $ (4.3)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Amortization of favorable interim supply agreement (40.0)us-gaap_AdjustmentForAmortization (15.5)us-gaap_AdjustmentForAmortization (7.2)us-gaap_AdjustmentForAmortization
Total cost of product sold (3,449.4)us-gaap_CostOfGoodsSold (2,876.0)us-gaap_CostOfGoodsSold (1,687.8)us-gaap_CostOfGoodsSold
Selling, general and administrative expenses      
Total selling, general and administrative expenses (1,078.4)us-gaap_SellingGeneralAndAdministrativeExpense (895.1)us-gaap_SellingGeneralAndAdministrativeExpense (585.4)us-gaap_SellingGeneralAndAdministrativeExpense
Impairment of goodwill and intangible assets 0us-gaap_GoodwillAndIntangibleAssetImpairment (300.9)us-gaap_GoodwillAndIntangibleAssetImpairment 0us-gaap_GoodwillAndIntangibleAssetImpairment
Gain on remeasurement to fair value of equity method investment 0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain 1,642.0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain 0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
Unusual Items [Member]      
Cost of product sold      
Amortization of favorable interim supply agreement (28.4)us-gaap_AdjustmentForAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(6.0)us-gaap_AdjustmentForAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0us-gaap_AdjustmentForAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Flow through of inventory step-up 0stz_FlowThroughOfInventoryStepUp
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(11.0)stz_FlowThroughOfInventoryStepUp
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(7.8)stz_FlowThroughOfInventoryStepUp
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Other losses (2.8)stz_CostOfProductSoldOther
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0stz_CostOfProductSoldOther
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0stz_CostOfProductSoldOther
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Total cost of product sold (59.5)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(16.0)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(7.8)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Selling, general and administrative expenses      
Transaction, integration and other acquisition-related costs (30.5)us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(51.5)us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(27.7)us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Other gains (losses) 7.2us-gaap_OtherGeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(4.2)us-gaap_OtherGeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
1.7us-gaap_OtherGeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Total selling, general and administrative expenses (23.3)us-gaap_SellingGeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(55.7)us-gaap_SellingGeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(26.0)us-gaap_SellingGeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Impairment of goodwill and intangible assets 0us-gaap_GoodwillAndIntangibleAssetImpairment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(300.9)us-gaap_GoodwillAndIntangibleAssetImpairment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0us-gaap_GoodwillAndIntangibleAssetImpairment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Gain on remeasurement to fair value of equity method investment 0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
1,642.0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Unusual Items, Operating income (loss) (82.8)us-gaap_UnusualOrInfrequentItemNetGainLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
1,269.4us-gaap_UnusualOrInfrequentItemNetGainLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(33.8)us-gaap_UnusualOrInfrequentItemNetGainLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Unusual Items [Member] | Commodity derivative contracts [Member]      
Cost of product sold      
Net gain (loss) on undesignated commodity derivative contracts (32.7)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
1.5us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
0us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Settlements of undesignated commodity derivative contracts $ 4.4stz_SettlementsOfUndesignatedCommoditySwapContracts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
$ (0.5)stz_SettlementsOfUndesignatedCommoditySwapContracts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
$ 0stz_SettlementsOfUndesignatedCommoditySwapContracts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember