Stock-Based Employee Compensation - Weighted Average Grant-Date Fair Value of Performance Share Units (Details) - Long-Term Stock Incentive Plan - $ / shares |
12 Months Ended | ||
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Feb. 28, 2023 |
Feb. 28, 2022 |
Feb. 28, 2021 |
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| Performance Share Units | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] | |||
| Grant-date fair value (in dollars per share) | $ 395.55 | $ 318.71 | $ 202.53 |
| Performance Share Units, Market Condition | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] | |||
| Grant-date fair value (in dollars per share) | 395.47 | 318.71 | 202.53 |
| Grant-date price (in dollars per share) | $ 254.21 | $ 238.31 | $ 153.02 |
| Performance period | 2 years 10 months 24 days | 2 years 10 months 24 days | 2 years 10 months 24 days |
| Expected volatility | 32.10% | 35.00% | 31.70% |
| Risk-free interest rate | 2.80% | 0.30% | 0.20% |
| Expected dividend yield | 0.00% | 0.00% | 0.00% |
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- Definition Per share or unit weighted-average intrinsic value of award granted under share-based payment arrangement. Excludes share and unit options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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