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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Accounts Receivable, Allowance for Credit Loss
The following table represents the activity in the allowance for credit losses for the years ended December 31, 2023, 2022, and 2021:
Year Ended December 31,
(In millions)202320222021
Beginning balance$133 $683 $67 
Acquired balance from Vivint Smart Home22 — — 
Acquired balance from Direct Energy— — 112 
Provision for credit losses(a)
251 11 698 
Write-offs(313)(593)(224)
Recoveries collected39 32 30 
Other13 — — 
Ending balance(a)
$145 $133 $683 
(a)Includes bilateral finance hedging risk of $(70) million and $403 million accounted for under ASC 815 for the years ended December 31, 2022 and December 31, 2021, respectively
Reconciliation of cash, cash equivalents, and restricted cash and cash equivalents
The following table provides a reconciliation of cash and cash equivalents, restricted cash and funds deposited by counterparties reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the statements of cash flows.
 Year Ended December 31,
(In millions)202320222021
Cash and cash equivalents$541 $430 $250 
Funds deposited by counterparties84 1,708 845 
Restricted cash24 40 15 
Cash and cash equivalents, funds deposited by counterparties and restricted cash shown in the statements of cash flows
$649 $2,178 $1,110 
Detail of supplemental disclosures of cash flow and non-cash investing and financing information was:
 Year Ended December 31,
 (In millions)202320222021
Interest paid, net of amount capitalized$548 $383 $433 
Income taxes paid, net of refunds48 66 32 
Non-cash investing activities:
Decreases to fixed assets for accrued capital expenditures— (68)(16)