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Fair Value Disclosures - Fair Value Option Election Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 30, 2019
Nov. 30, 2021
Nov. 30, 2020
Oct. 10, 2019
Sep. 16, 2019
Nov. 30, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]            
Loans and other receivables on nonaccrual status and/or 90 days or greater past due   $ 56.9 $ 69.7      
Loans and other receivables 90 days or greater past due   $ 23.5 $ 3.8      
Spectrum Brands            
Fair Value, Option, Quantitative Disclosures [Line Items]            
Shares owned, number (in shares)           7,514,477
Ownership percentage       15.00%   15.00%
Changes in fair value of investments reflected as principal transactions $ 80.0          
Dividends payable         $ 451.1