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Summary of Significant Accounting Policies Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2020 | Jan. 31, 2020 | Aug. 01, 2019 | Jul. 31, 2019 | Jan. 31, 2019
Interest Rate Swap Notional Amount |  | $ 400,000 |  |  |
Operating Lease, Right-of-Use Asset | $ 227,394 | 227,394 | $ 225,600 | $ 0 | $ 0
Operating Lease, Liability | 264,124 | 264,124 | 258,000 |  |
Operating Lease, Liability, Noncurrent | 228,474 | 228,474 | 223,100 | 0 | 0
Operating Lease, Liability, Current | 35,700 | 35,700 | 34,900 |  |
Other Long Term Liabilities Noncurrent | 245,375 | 245,375 |  | $ 283,601 | $ 274,998
Unfavorable Lease Obligation Net |  |  | $ 32,400 |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 4,900 | 4,600 |  |  |
Interest Rate Cash Flow Hedge Liability at Fair Value | $ 4,563 | $ 4,563 |  |  |

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