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Debt Senior Notes (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended | 24 Months Ended | 48 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 30, 2020 | Jan. 31, 2026 | Jan. 31, 2025 | Jul. 31, 2023 | Jul. 31, 2022 | Feb. 01, 2028 | Jul. 31, 2025 | Jan. 31, 2024 | Jul. 31, 2021 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted Payments Basket | $ 328,600 |  |  |  |  |  |  |  |  | $ 264,500
2028 Senior Notes [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 400,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.95% |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date | Feb. 01, 2028 |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 101.238% | 102.475% |  |  | 100.00% |  | 103.713% |  |
2021 Senior Notes [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 300,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.75% |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  |  |  | 100.00% |  |  |  |
2025 Senior Notes [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 250,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.625% |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date | Aug. 01, 2025 |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 101.406% | 102.813% |  | 100.00% |  | 104.219% |
Base of restricted payments basket income calculation [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Other Restrictions on Payment of Dividends | $ 125,000 |  |  |  |  |  |  |  |  |
Percentage of our aggregate consolidated net income added to base amount of calculation [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent restrictions on payment of dividends | 50.00% |  |  |  |  |  |  |  |  |
Percentage of our aggregate consolidated net income subtracted from base amount of calculation [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent restrictions on payment of dividends | 100.00% |  |  |  |  |  |  |  |  |
Percentage of net cash proceeds from sale of qualified equity interests added to base and income/loss amount in calculation [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent restrictions on payment of dividends | 100.00% |  |  |  |  |  |  |  |  |

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