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Accounts Receivable, Net Accounts Receivable, Net (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Power receivables | $ 1,480 |  | $ 1,401
Other receivables | 86 |  | 128
Allowance for uncollectible accounts | (1) | [1] | (1)
Accounts receivable, net | 1,566 |  | 1,529
Available Credit on Public Power Support and Stabilization Program |  |  | $ 1,000
Subsequent Credit on Public Power Support and Stabilization Program | $ 1 |  |
[1] | Allowance for uncollectible accounts was less than $1 million at September 30, 2021 and 2020, and therefore is not represented in the table above. The allowance at September 30, 2021 includes the impact from adopting CECL on October 1, 2020.

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