Stock-Based Compensation - Summary of Stock Option Activity (Details) - Stock Options - $ / shares shares in Millions	3 Months Ended
Feb. 28, 2019	Feb. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Number of Shares	3.6	4.8
Exercised, Number of Shares	0.1	0.3
Outstanding at end of period, Number of Shares	3.5	4.5
Excercisable at end of the period, Number of Shares	2.7	3.5
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at beginning of period, Weighted-Average Exercise Price	$ 82.60	$ 71.91
Exercised, Weighted-Average Exercise Price	63.07	54.84
Outstanding at end of period, Weighted-Average Exercise Price	83.04	73.04
Exercisable at end of the period, Weighted-Average Exercise Price	$ 77.11	$ 66.37

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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