Summary of Significant Accounting Policies - Receivables and Investments (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Summary of Significant Accounting Policies | |||
| Balance, beginning of period | $ 3 | $ 2 | $ 3 |
| Provision charged to expense | 4 | 1 | 1 |
| Write-offs, net of recoveries | (4) | (2) | |
| Balance, end of period | $ 3 | $ 3 | $ 2 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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