Earnings Per Share and Stock Issuances - Common Stock Activity (Details) - shares shares in Millions	3 Months Ended	9 Months Ended
Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019
Stock Options And Restricted Stock Units
Employee Stock Purchase Plan [Line Items]
Shares issued under stock options, RSUs, LTPP and employee stock purchase plans	0.3	0.5	0.8	1.4
Share Repurchase Program
Employee Stock Purchase Plan [Line Items]
Shares repurchased under the stock repurchase program and shares withheld for taxes under stock options, RSUs, LTPP and employee stock purchase programs	0.1	0.1	0.3	0.6

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration