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Receivables, Loans, Notes Receivable, and Others (Notes) | 3 Months Ended
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Dec. 31, 2020
Receivables [Abstract] |
Accounts and Nontrade Receivable | Accounts Receivable, Net Receivables consist of amounts billed and currently due from customers and unbilled costs and accrued profits related to revenues on long-term contracts that have been recognized for accounting purposes but not yet billed to customers. The Company extends credit to customers in the normal course of business and maintains an allowance for expected credit losses resulting from the inability or unwillingness of customers to make required payments. The allowance for expected credit losses is based on historical experience, existing economic conditions, reasonable and supportable forecasts, and any specific customer collection issues the Company has identified. The Company evaluates the reasonableness of the allowance for credit losses on a quarterly basis. The Company enters into supply chain financing programs to sell certain accounts receivable without recourse to third-party financial institutions. Sales of accounts receivable are reflected as a reduction of accounts receivable in the consolidated statements of financial position and the proceeds are included in cash flows from operating activities in the consolidated statements of cash flows. Accounts receivable, net consisted of the following (in millions):
|  | December 31, 2020 |  | September 30, 2020 |  |
Accounts receivable |  | $ | 5,350 |  |  | $ | 5,467 |  |  |
Less: Allowance for expected credit losses (1) |  | (173) |  |  | (173) |  |  |
Accounts receivable, net |  | $ | 5,177 |  |  | $ | 5,294 |  |  |
(1) Allowance for doubtful accounts as of September 30, 2020, prior to the adoption of ASU 2016-13. The changes in the allowance for expected credit losses related to Accounts receivable for the three month period ended December 31, 2020 were as follows (in millions):
|  | Three Months Ended December 31,
|  | 2020 |  |
Balance as of September 30, 2020 |  | $ | 173 |  |  |
Provision for expected credit losses |  | 7 |  |  |
Write-offs charged against the allowance for expected credit losses |  | (12) |  |  |
Other (including impact of adoption of ASU 2016-13) |  | 5 |  |  |
Balance as of December 31, 2020 |  | $ | 173 |  |  |

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- Definition The entire disclosure for accounts receivable, contract receivable, receivable held-for-sale, and nontrade receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -URI http://asc.fasb.org/topic&trid=82887179 + Details
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- References No definition available. + Details
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