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Debt and Letters of Credit - 2028 Notes (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2018 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Line of Credit Facility [Line Items] |  |  |  |
Proceeds from issuance of 2029 Notes, net of issuance costs |  | $ 560,000,000 | $ 0 | $ 0
2029 Notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt instrument, face amount | $ 600,000,000 |  |  |
Interest rate | 4.25% |  |  |
Proceeds from issuance of 2029 Notes, net of issuance costs | $ 595,000,000 |  |  |
2029 Notes | Prior to June 15, 2028 |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Redemption price (as a percent) |  | 100.00% |  |
Senior Notes Due 2018, 2016 and 2014 |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Redemption price (as a percent) |  | 101.00% |  |

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