Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Information (Unaudited) (Details)

v3.19.1
Selected Quarterly Financial Information (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Feb. 28, 2019
Nov. 30, 2018
Aug. 31, 2018
May 31, 2018
Feb. 28, 2018
Nov. 30, 2017
Aug. 31, 2017
May 31, 2017
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2017
Summary of selected quarterly financial information                      
Net sales $ 1,797.2 $ 1,972.6 $ 2,299.1 $ 2,047.1 $ 1,762.0 $ 1,801.9 $ 2,087.9 $ 1,928.5 $ 8,116.0 $ 7,580.3 $ 7,321.1
Gross profit 893.5 970.0 1,168.2 1,048.6 845.2 910.3 1,068.7 988.3 4,080.3 3,812.5 3,519.0
Net income attributable to CBI 1,239.5 303.1 1,149.5 743.8 910.5 492.8 501.6 398.5 3,435.9 2,303.4 1,528.6
Earnings Per Share [Abstract]                      
Unrealized net gain (loss) on securities measured at fair value, net of income tax effect 911.7 (168.4) 595.1 224.1 264.0 138.7 0.0 0.0      
Net gain (loss) on sale of unconsolidated investment, net of income tax effect 0.0 0.0 (1.6) 99.5              
Impairment of intangible assets, net of income tax effect $ (81.0) $ 0.0 $ 0.0 $ 0.0 0.0 0.0 0.0 (54.4)      
Net income tax benefit related to the Tax Cuts and Jobs Act         $ (351.2) $ 0.0 $ 0.0 $ 0.0   (351.2) 0.0
Class A Common Stock [Member]                      
Summary of selected quarterly financial information                      
Net income attributable to CBI                 $ 3,049.5 $ 2,049.9 $ 1,364.3
Earnings Per Share [Abstract]                      
Net income per common share attributable to CBI, basic (in dollars per share) $ 6.57 $ 1.62 $ 6.11 $ 3.93 $ 4.76 $ 2.55 $ 2.59 $ 2.07 $ 18.24 $ 11.96 $ 7.76
Net income per common share attributable to CBI, diluted (in dollars per share) 6.37 1.56 5.87 3.77 4.56 2.45 2.49 1.98 $ 17.57 $ 11.47 $ 7.49
Class B Convertible Common Stock [Member]                      
Summary of selected quarterly financial information                      
Net income attributable to CBI                 $ 386.4 $ 253.5 $ 164.3
Earnings Per Share [Abstract]                      
Net income per common share attributable to CBI, basic (in dollars per share) 5.97 1.47 5.55 3.57 4.32 2.32 2.36 1.88 $ 16.57 $ 10.86 $ 7.04
Net income per common share attributable to CBI, diluted (in dollars per share) $ 5.87 $ 1.45 $ 5.41 $ 3.48 $ 4.21 $ 2.26 $ 2.30 $ 1.83 $ 16.21 $ 10.59 $ 6.90