Accounts receivable

No definition available.

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- Definition

Balance of appropriated funds advanced and property transferred to/from the reporting entity by the U.S. government as an investment in its power program.

+ References

No definition available.

+ Details

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- Definition

The population of the company's service area.

+ References

No definition available.

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- Definition

Population of Service Area [Line Items]

+ References

No definition available.

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- Definition

Recorded cost for emission allowances granted by the Environmental Protection Agency

+ References

No definition available.

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- Definition

Reimbursements from DOE

+ References

No definition available.

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- References

No definition available.

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- Definition

Amount of allowance for credit loss on financing receivable, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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- Definition

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

+ References

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Summary of Significant Accounting Policies - General (Details) $ in Millions	12 Months Ended
	Sep. 30, 2021 USD ($) People	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2014 USD ($)
Accounting Policies [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 499	$ 500
Allowance for uncollectible accounts - loans	4	1
Recorded cost for emission allowances granted by the Environmental Protection Agency	0
Reimbursements from DOE	137
Restricted Cash and Investments, Noncurrent	19	21
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	518	521	$ 322	$ 322
Accounts receivable from DOE	11
Appropriation-investment power program	$ 258	258			$ 1,000
Population of Service Area [Line Items]
Population of service area \| People	10,000,000
Cash and Cash Equivalents, at Carrying Value	$ 499	500
Restricted Cash and Investments, Noncurrent	$ 19	$ 21