Fair Value Disclosures (Fair Value Hierarchy, Carrying Values, and Estimated Fair Values of Financial Instruments) (Details) - Level 2 - Senior Notes [Member] - USD ($) $ in Thousands |
May 31, 2020 |
Nov. 30, 2019 |
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Carrying Value [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Senior notes | [1] | $ 1,741,668 | $ 1,740,858 | |
Estimate of Fair Value [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Senior notes | $ 1,862,750 | $ 1,921,563 | ||
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