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Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jul. 31, 2020
Jan. 31, 2020
Debt Instrument [Line Items]      
2021 (February 2021 through July 2021) $ 31,684    
2022 121,345    
2023 63,740    
2024 63,796    
2025 1,614,127    
Thereafter 1,097,465    
Total debt $ 2,992,157 $ 2,444,248 $ 1,866,566