Summary of Significant Accounting Policies - Accounts Receivable and Allowance for Credit Losses (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Summary of Significant Accounting Policies | ||
| Balance at beginning of year | $ 5 | $ 4 |
| Additions Charged to costs and expenses | 4 | 5 |
| Deductions Write-offs net of recoveries | (5) | (4) |
| Balance at end of year | $ 4 | $ 5 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. 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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