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Stock and Stock-Based Incentive Plans Stock and Stock-Based Incentive Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
May 31, 2018 | Feb. 28, 2018 | May 31, 2017
Share Repurchase Program |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Stock Repurchase Program, Authorized Amount | $ 2,750.0 |  |
Available for repurchase, as of end of period | $ 809.5 |  | $ 1,408.3
Stock Option |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 7 years |  |
Cash-settled restricted stock units |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 1,728,000 | 1,460,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ 58.01 | $ 59.36 |
Cash-settled restricted stock units | Maximum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Cash payment per cash settled restricted stock unit | 200.00% |  |
Cash-settled restricted stock units | Minimum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Cash payment per cash settled restricted stock unit | 75.00% |  |
Stock-settled market stock units |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Market Stock Units Converted To Common Stock Conversion Ratio Number Of Final Trading Days In Vesting Period | 40 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Conversion Ratio Quotient | 2 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 519,000 | 419,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ 74.19 | $ 74.04 |
Stock-settled market stock units | Maximum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Stock units converted to common stock for each unit granted | 2 |  |
Stock-settled market stock units | Minimum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Stock units converted to common stock for each unit granted | 0 |  |
Stock-settled performance stock units |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 156,680 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ 54.80 |  |
Stock-settled performance stock units | Maximum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Stock units converted to common stock for each unit granted | 2 |  |
PSU EBIT threshold for conversion | 200.00% |  |
Stock-settled performance stock units | Minimum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Stock units converted to common stock for each unit granted | 0 |  |
PSU EBIT threshold for conversion | 25.00% |  |
Restricted stock awards |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 36,211 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ 56.62 |  |
Restricted stock awards | Maximum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Restricted stock awards | Minimum |  |  |
Stock and Stock-Based Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 year |  |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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