Compensation Plans - Compensation Cost (Details) - USD ($) $ in Millions	12 Months Ended
Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs	$ 442.2	$ 507.3	$ 348.6
Profit sharing plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs	7.8	7.8	7.2
Restricted cash awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs	375.5	474.3	314.7
Accelerated amortization	188.3	179.6
Stock options and Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs	41.3	0.0	0.0
Restricted stock and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs	17.6	25.2	26.7
Restricted stock and RSUs \| Deferred Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted cash awards	$ 0.4	$ 0.3	$ 0.4

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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