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Basis Of Presentation Financial Instruments - Fair Value Indebtedness Table (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 | Jan. 27, 2021
--- | --- | --- | ---
Long-term debt principal amount |  | $ 2,716 |  |  |
Secured Debt | Term Loan A Facility |  |  |  |  |
Long-term debt principal amount |  | 202 | [1],[2] | $ 206 | $ 237
Long-term debt fair value | [3] | 201 |  | 205 |
Secured Debt | 7.00% Senior Secured Second Lien Notes |  |  |  |  |
Long-term debt principal amount |  | 640 |  | 640 |
Long-term debt fair value | [3] | 568 |  | 590 |
Senior Notes | 5.75% Senior Notes |  |  |  |  |
Long-term debt principal amount |  | 576 |  | 576 |
Long-term debt fair value | [3] | 407 |  | 448 |
Senior Notes | 5.25% Senior Notes |  |  |  |  |
Long-term debt principal amount |  | 457 |  | 457 |
Long-term debt fair value | [3] | 311 |  | 336 |
Convertible Debt | 0.25% Exchangeable Senior Notes |  |  |  |  |
Long-term debt principal amount |  | 403 |  | 403 |
Long-term debt fair value | [3] | 320 |  | 314 |
Line of Credit | Revolving Credit Facility |  |  |  |  |
Line of credit facility outstanding |  | 438 | [4],[5],[6] | 285 |
Line of credit facility fair value | [3] | $ 438 |  | $ 285 |
[1] | The i nterest rate with respect to outstanding borrowings under the Term Loan A Facility at March 31, 2024 is based on, at the Company's option, Term SOFR plus a 10 basis point credit spread adjustment or ABR, plus (in each case) an additional margin subject to adjustment based on the then current senior secured leverage ratio. Based on the previous quarter's senior secured leverage ratio, the SOFR margin was 1.75% and the ABR margin was 0.75% for the three months ended March 31, 2024.
[2] | The Term Loan A Facility provides for quarterly amortization payments based on a percentage of the original principal amount of $237 million as follows: 1.25% per quarter from June 30, 2022 to March 31, 2023; 1.875% per quarter from June 30, 2023 to March 31, 2024; and 2.50% per quarter for periods ending on or after June 30, 2024, with the balance of the Term Loan A Facility due at maturity on February 8, 2025.
[3] | The fair value of the Company's indebtedness is categorized as Level II.
[4] | The maturity date of the Revolving Credit Facility is July 27, 2027 and may spring forward to an earlier date as follows: (i) if on or before March 16, 2026, the 0.25% Exchangeable Senior Notes have not been extended, refinanced or replaced to have a maturity date after October 26, 2027 (or are not otherwise discharged, defeased or repaid by March 16, 2026), the maturity date of the Revolving Credit Facility will be March 16, 2026; and (ii) if on or before November 9, 2024, the "term A loans" under the Term Loan A Agreement have not been extended, refinanced or replaced to have a maturity date after October 26, 2027 (or are not otherwise repaid by November 9, 2024), the maturity date of the Revolving Credit Facility will be November 9, 2024.
[5] | As of March 31, 2024, the Company had $1,100 million of borrowing capacity under its Revolving Credit Facility. As of March 31, 2024, there were $438 million of outstanding borrowings under the Revolving Credit Facility and $33 million of outstanding undrawn letters of credit. On April 24, 2024, the Company had $525 million of outstanding borrowings under the Revolving Credit Facility and $34 million of outstanding undrawn letters of credit.
[6] | The interest rate with respect to revolving loans under the Revolving Credit Facility at March 31, 2024 is based on, at the Company's option, Term Secured Overnight Financing Rate (" SOFR") plus a 10 basis point credit spread adjustment or JP Morgan Chase Bank, N.A.'s prime rate ("ABR") plus (in each case) an additional margin subject to adjustment based on the then current senior secured leverage ratio. Based on the previous quarter's senior secured leverage ratio, the SOFR margin was 1.75% and the ABR margin was 0.75% for the three months ended March 31, 2024.

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