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 |
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| 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 |
| X | ||||||||||
- Definition Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment, Net of Tax [Line Items] No definition available.
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- Definition Gain (Loss) on Sale of Investments, Net of Tax No definition available.
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- Definition Goodwill and intangible assets impairment, net of tax No definition available.
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- Definition Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit) No definition available.
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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