Amortization Period For Line Of Credit Facility

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- Definition

Amount of variable rate pollution control revenue bonds outstanding requiring liquidity support.

+ References

No definition available.

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- Definition

Amount of Fixed rate pollution control revenue bonds outstanding requiring liquidity support.

+ References

No definition available.

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- Definition

Promissory Note

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No definition available.

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- Definition

Senior Note Issuances

+ References

No definition available.

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- Definition

Working Capital

+ References

No definition available.

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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

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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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

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16)(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Represents the current and noncurrent portions of a debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03.16)
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- Definition

Carrying value as of the balance sheet date of the portion of long-term notes having the highest claim on the assets of the issuer in case of bankruptcy or liquidation, due within one year or the normal operating cycle, if longer. Senior note holders are paid off in full before any payments are made to debt holders having a lesser priority of repayment.

+ References

+ Details

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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Financing - Narrative (Details) - USD ($)				1 Months Ended	3 Months Ended
Financing - Narrative (Details) - USD ($)	Feb. 28, 2017	Jun. 03, 2015	Feb. 20, 2014	Mar. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Short-term debt				$ 2,818,000,000	$ 2,818,000,000	$ 2,241,000,000
Variable rate pollution control revenue bonds outstanding				1,900,000,000	1,900,000,000
Maximum borrowing capacity				8,443,000,000	8,443,000,000
Senior Note Issuances					1,400,000,000
Mississippi Power [Member]
Debt Instrument [Line Items]
Working capital				1,200,000,000	1,200,000,000
Senior notes, current				35,000,000	35,000,000
Short-term debt				36,000,000	36,000,000	23,000,000
Long-term pollution control bond				50,000,000	50,000,000
Variable rate pollution control revenue bonds outstanding				40,000,000	40,000,000
Fixed rate pollution control revenue bonds outstanding				50,000,000	50,000,000
Maximum borrowing capacity				173,000,000	173,000,000
Promissory note		$ 301,000,000
Mississippi Power [Member] \| Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Short-term debt				36,000,000	36,000,000
Mississippi Power [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Loans payable to bank				1,200,000,000	1,200,000,000
Mississippi Power [Member] \| Tax-Exempt Variable Rate Demand Obligations [Member]
Debt Instrument [Line Items]
Short-term debt				40,000,000	40,000,000
Mississippi Power [Member] \| Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Debt face amount				$ 9,000,000	$ 9,000,000
Debt stated interest rate				5.00%	5.00%
Georgia Power [Member]
Debt Instrument [Line Items]
Short-term debt				$ 0	$ 0	391,000,000
Debt instrument, basis spread on variable rate			0.375%
Amortization period for line of credit facility			5 years
Variable rate pollution control revenue bonds outstanding				868,000,000	868,000,000
Fixed rate pollution control revenue bonds outstanding				250,000,000	250,000,000
Maximum borrowing capacity				1,750,000,000	1,750,000,000
Senior Note Issuances					850,000,000
Georgia Power [Member] \| Senior Notes [Member] \| Series 2017A [Member]
Debt Instrument [Line Items]
Debt face amount				$ 450,000,000	$ 450,000,000
Debt stated interest rate				2.00%	2.00%
Georgia Power [Member] \| Senior Notes [Member] \| Series 2017B [Member]
Debt Instrument [Line Items]
Debt face amount				$ 400,000,000	$ 400,000,000
Debt stated interest rate				3.25%	3.25%
Alabama Power [Member]
Debt Instrument [Line Items]
Variable rate pollution control revenue bonds outstanding				$ 890,000,000	$ 890,000,000
Maximum borrowing capacity				1,335,000,000	1,335,000,000
Senior Note Issuances					550,000,000
Alabama Power [Member] \| Senior Notes [Member] \| Series 2017A [Member]
Debt Instrument [Line Items]
Debt face amount				$ 550,000,000	$ 550,000,000
Debt stated interest rate				2.45%	2.45%
Gulf Power [Member]
Debt Instrument [Line Items]
Short-term debt				$ 100,000,000	$ 100,000,000	268,000,000
Variable rate pollution control revenue bonds outstanding				82,000,000	82,000,000
Fixed rate pollution control revenue bonds outstanding				86,000,000	86,000,000
Maximum borrowing capacity				280,000,000	280,000,000
Senior Note Issuances					0
Gulf Power [Member] \| Bank Loans [Member]
Debt Instrument [Line Items]
Debt face amount				100,000,000	100,000,000
Traditional Operating Companies [Member]
Debt Instrument [Line Items]
Fixed rate pollution control revenue bonds outstanding				386,000,000	386,000,000
Southern Power [Member]
Debt Instrument [Line Items]
Short-term debt				380,000,000	380,000,000	$ 209,000,000
Maximum borrowing capacity				600,000,000	600,000,000
Senior Note Issuances					0
Southern Company [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				2,250,000,000	2,250,000,000
Senior Note Issuances					$ 0
Southern Company [Member] \| Bank Loans [Member]
Debt Instrument [Line Items]
Senior Note Issuances				$ 400,000,000
Debt Instrument, Term				18 months
Southern Company [Member] \| Mississippi Power [Member]
Debt Instrument [Line Items]
Promissory note	$ 551,000,000