Debt - Summary of debt (Details) - USD ($) $ in Millions |
Sep. 30, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Oct. 07, 2020 |
|---|---|---|---|---|
| Debt | ||||
| Outstanding Principal | $ 972 | $ 1,051 | ||
| Deferred financing costs | (2) | (1) | $ (1) | |
| Total debt | 985 | 1,069 | 1,021 | |
| Debt classified as current | (4) | (3) | (3) | |
| Total long-term debt | 981 | 1,066 | 1,018 | |
| Senior Notes | ||||
| Debt | ||||
| Outstanding Principal | 600 | 600 | $ 600 | |
| Carrying value | 615 | 619 | 623 | |
| Senior credit facility | ||||
| Debt | ||||
| Outstanding Principal | 368 | 447 | ||
| Carrying value | 368 | 447 | 394 | |
| Wells Fargo note payable | ||||
| Debt | ||||
| Outstanding Principal | 4 | 4 | ||
| Carrying value | $ 4 | $ 4 | $ 5 |
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- Definition Amount, after unamortized (discount) premium, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. No definition available.
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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