The amount represents the guarantee obligations maximum exposure received.

No definition available.

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- Definition

Represents the amount of interest to be accrued and payable prior to a specified period, which will be reflected as additional borrowings under the Facility.

+ References

No definition available.

+ Details

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- Definition

Represents the number of future advance promissory notes.

+ References

No definition available.

+ Details

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- Definition

The required percentage of ownership to continue construction.

+ References

No definition available.

+ Details

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- Definition

Represents the period of cessation of construction activities which would result in prepayment of outstanding principal.

+ References

No definition available.

+ Details

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- Definition

Represents the period of failure to fund operation and maintenance expenses which would result in prepayment of outstanding principal.

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 1
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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Debt - Department of Energy Loan Guarantee (Details)	9 Months Ended
Debt - Department of Energy Loan Guarantee (Details)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Mar. 22, 2019 USD ($)	Mar. 07, 2019 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Feb. 20, 2014 USD ($) item
Debt
Long-term debt proceeds	$ 683,008,000	$ 280,257,000
Vogtle Units No. 3 & No. 4
Debt
Guarantee Obligations Maximum Exposure Received					$ 1,104,000,000
Loan Guarantee Agreement
Debt
Term of debt	5 years
Period of cessation of construction activities which would result in prepayment of outstanding principal	12 months
Period of failure to fund operation and maintenance expenses which would result in prepayment of outstanding principal	12 months
Long-term debt
Debt
Ownership interests voting required to continue construction (as a percent)	90.00%
Long-term debt \| FFB
Debt
Number of future advance promissory notes \| item							2
Maximum borrowing capacity	$ 3,057,069,461		$ 4,676,749,167				$ 3,057,069,461
Capitalized interest	335,471,604
Aggregate borrowings including capitalized interest	0			$ 585,000,000
Long-term debt \| FFB \| Department of Energy guarantee
Debt
Maximum borrowing capacity			$ 1,619,679,706
Aggregate borrowings including capitalized interest	$ 2,435,490,000					$ 1,619,679,706
Long-term debt \| FFB \| US Treasury Securities, Current Yield
Debt
Spread on variable rate (as a percent)	0.375%