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Summary of Significant Accounting Policies - Schedule of Allowance for Uncollectible Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, January 1 | $ 111 | $ 120 | $ 130
Amounts charged to expense | 99 | 68 | 58
Recoveries | (3) | 0 | 0
Write-offs of uncollectible receivables | (73) | (77) | (68)
Balance, December 31 | $ 134 | $ 111 | $ 120

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