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Product Warranty (Schedule of Product Warranty Reserve) (Details) - USD ($)
$ in Thousands
3 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty reserve, beginning of the period $ 294,138 $ 319,109
Warranties issued 38,271 33,971
Adjustments to pre-existing warranties from changes in estimates 5,904 (9,527)
Payments (50,900) (47,931)
Warranty reserve, end of period $ 287,413 $ 295,622