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Long-Term Debt - Narrative (Details) - USD ($) |  |  | 9 Months Ended
--- | --- | --- | ---
Jul. 01, 2021 | Mar. 19, 2021 | Sep. 30, 2021 | Sep. 30, 2020
Debt Instrument [Line Items] |  |  |  |
Redemption of debt |  |  | $ 1,575,997,000 | $ 0
Loss on extinguishment of long-term borrowings |  |  | $ 101,695,000 | $ 0
Senior Notes | 2021 Senior Notes due April 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal of debt instrument |  | $ 600,000,000 |  |
Interest rate |  | 3.375% |  |
Senior Notes | 2021 Senior Notes due April 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal of debt instrument |  | $ 600,000,000 |  |
Interest rate |  | 3.75% |  |
Senior Notes | 2017/2018 Senior Notes due December 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate |  | 6.75% |  |
Redemption of debt | $ 275,000,000 | $ 1,225,000,000 |  |
Loss on extinguishment of long-term borrowings | 18,500,000 | 83,200,000 |  |
Debt prepayment premium costs | 14,000,000 | 62,000,000 |  |
Write-off of unamortized debt issuance costs | $ 4,500,000 | $ 21,200,000 |  |

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