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Stock-Based Compensation (Narrative) (Details) $ / shares in Units, $ in Millions | 12 Months Ended
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Nov. 30, 2020 USD ($) award_type $ / shares shares | Nov. 30, 2019 USD ($) $ / shares shares | Nov. 30, 2018 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of Stock-based Compensation Award Types | award_type | 4 |  |
Total stock-based compensation expense | $ 46.0 | $ 37.2 | $ 25.6
Unrecognized stock-based compensation expense | $ 23.2 |  |
Weighted average period for unrecognized stock-based compensation to be recognized | 1 year 3 months 18 days |  |
Common Stock, Capital Shares Reserved for Future Issuance | shares | 6,600,000 |  |
Intrinsic value of options outstanding | $ 178.7 |  |
Intrinsic value for exercisable options | 146.0 |  |
Total intrinsic value for all options exercised | $ 68.4 | $ 111.0 | $ 108.0
Dividend yield | 1.80% | 1.50% | 2.00%
Expected lives | 7 years 10 months 24 days | 7 years 6 months | 7 years 7 months 6 days
Restricted Stock Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Granted, Shares | shares | 296,000 | 258,000 | 556,000
Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Exercisable period | 10 years |  |
Weighted-average grant-date fair value of an option granted (usd per share) | $ / shares | $ 13.27 | $ 13.76 | $ 10.15
Long-term Performance Program [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average period for unrecognized stock-based compensation to be recognized | 3 years |  |
Granted, Shares | shares | 130,000 | 136,000 | 172,000
Price Vested Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized stock-based compensation expense | $ 23.3 |  |
Weighted average period for unrecognized stock-based compensation to be recognized | 3 years |  |
Exercisable period | 10 years |  |
Weighted-average grant-date fair value of an option granted (usd per share) | $ / shares | $ 93.49 |  |
Granted, Shares | shares | 2,482,000 |  |
Risk free interest rate, maximum | 0.85% |  |
Dividend yield | 1.50% |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 21.20% |  |
Price Vested Stock Options [Member] | Share-based Payment Arrangement, Tranche One |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted-average grant-date fair value of an option granted (usd per share) | $ / shares | $ 11.88 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 60.00% |  |
Price Vested Stock Options [Member] | Share-based Payment Arrangement, Tranche Two |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted-average grant-date fair value of an option granted (usd per share) | $ / shares | $ 9.26 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 80.00% |  |
Price Vested Stock Options [Member] | Share-based Payment Arrangement, Tranche Three |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted-average grant-date fair value of an option granted (usd per share) | $ / shares | $ 7.05 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 100.00% |  |
Price Vested Stock Options [Member] | Minimum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected lives | 5 years 7 months 6 days |  |
Price Vested Stock Options [Member] | Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected lives | 6 years 2 months 12 days |  |

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- Definition The number of grants made 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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