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Leases - Information Related to Our Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Feb. 01, 2019 | Apr. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cash paid for operating lease liabilities |  | $ 16,184
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities |  | $ 295,950
Operating leases, Weighted Average Remaining Lease Term (in years) |  | 6 years 1 month 6 days
Operating leases, Weighted Average Discount Rate, Percent |  | 3.53%
Accounting Standards Update 2016-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities | $ 279,000 |
Accounting Standards Update 2016-02, Commenced Subsequent To Adoption |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities |  | $ 17,000

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