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Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | $ 133 | $ 683 | $ 67
Provision for credit losses | 251 | 11 | 698
Write-offs | (313) | (593) | (224)
Recoveries collected | 39 | 32 | 30
Other | 13 | 0 | 0
Ending balance | 145 | 133 | 683
Provision for credit losses (decrease) increase due finance hedge risk |  | (70) | 403
Vivint Smart Home |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Acquired balance | 22 | 0 | 0
Direct Energy |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Acquired balance | $ 0 | $ 0 | $ 112

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