Stockholders' Equity (Details Textual) - 2018 Authorization [Member] - USD ($) |
3 Months Ended | ||
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May 31, 2018 |
May 31, 2018 |
Jan. 31, 2018 |
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| Class A and Class B [Member] | |||
| Equity, Class of Treasury Stock [Line Items] | |||
| Repurchase authorization | $ 3,000,000,000.0 | ||
| Class A Common Stock [Member] | |||
| Equity, Class of Treasury Stock [Line Items] | |||
| Number of shares repurchased | 2,730,375 | 450,508 | |
| Dollar value of shares repurchased | $ 591,600,000 | $ 100,000,000 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of stock repurchase plan authorized. No definition available.
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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