Retirement Benefits - Components of Net Periodic Benefit Cost and Estimated Future Benefit Payments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Postretirement Benefits [Member]
Components of net periodic
Service cost	$ 21,000	$ 24,000	$ 21,000
Interest cost	79,000	74,000	85,000
Expected return on plan assets	(59,000)	(56,000)	(60,000)
Net amortization	6,000	21,000	20,000
Net periodic benefit cost	47,000	63,000	66,000
Benefit Payments
Benefit Payments, 2015	118,000
Benefit Payments, 2016	124,000
Benefit Payments, 2017	129,000
Benefit Payments, 2018	132,000
Benefit Payments, 2019	134,000
Benefit Payments, 2020 to 2024	670,000
Subsidy Receipts
Subsidy Receipts, 2015	(10,000)
Subsidy Receipts, 2016	(11,000)
Subsidy Receipts, 2017	(12,000)
Subsidy Receipts, 2018	(13,000)
Subsidy Receipts, 2019	(15,000)
Subsidy Receipts, 2020 to 2024	(79,000)
Benefit Payments and Subsidy Receipts, Total
Benefit Payments and Subsidy Receipts, 2015	108,000
Benefit Payments and Subsidy Receipts, 2016	113,000
Benefit Payments and Subsidy Receipts, 2017	117,000
Benefit Payments and Subsidy Receipts, 2018	119,000
Benefit Payments and Subsidy Receipts, 2019	119,000
Benefit Payments and Subsidy Receipts, 2020 to 2024	591,000
Pension Plans [Member]
Components of net periodic
Service cost	213,000	232,000	198,000
Interest cost	435,000	389,000	393,000
Expected return on plan assets	(645,000)	(603,000)	(581,000)
Recognized net (gain) loss	110,000	200,000	95,000
Net amortization	26,000	27,000	30,000
Net periodic benefit cost	139,000	245,000	135,000
Benefit Payments
Benefit Payments, 2015	522,000
Benefit Payments, 2016	450,000
Benefit Payments, 2017	478,000
Benefit Payments, 2018	499,000
Benefit Payments, 2019	524,000
Benefit Payments, 2020 to 2024	2,962,000
Alabama Power [Member] \| Other Postretirement Benefits [Member]
Components of net periodic
Service cost	5,000	6,000	5,000
Interest cost	20,000	19,000	22,000
Expected return on plan assets	(25,000)	(23,000)	(23,000)
Net amortization	4,000	5,000	6,000
Net periodic benefit cost	4,000	7,000	10,000
Benefit Payments
Benefit Payments, 2015	31,000
Benefit Payments, 2016	32,000
Benefit Payments, 2017	32,000
Benefit Payments, 2018	34,000
Benefit Payments, 2019	34,000
Benefit Payments, 2020 to 2024	172,000
Subsidy Receipts
Subsidy Receipts, 2015	(3,000)
Subsidy Receipts, 2016	(3,000)
Subsidy Receipts, 2017	(4,000)
Subsidy Receipts, 2018	(4,000)
Subsidy Receipts, 2019	(4,000)
Subsidy Receipts, 2020 to 2024	(22,000)
Benefit Payments and Subsidy Receipts, Total
Benefit Payments and Subsidy Receipts, 2015	28,000
Benefit Payments and Subsidy Receipts, 2016	29,000
Benefit Payments and Subsidy Receipts, 2017	28,000
Benefit Payments and Subsidy Receipts, 2018	30,000
Benefit Payments and Subsidy Receipts, 2019	30,000
Benefit Payments and Subsidy Receipts, 2020 to 2024	150,000
Alabama Power [Member] \| Pension Plans [Member]
Components of net periodic
Service cost	48,000	52,000	44,000
Interest cost	103,000	93,000	94,000
Expected return on plan assets	(168,000)	(157,000)	(162,000)
Recognized net (gain) loss	31,000	52,000	23,000
Net amortization	7,000	7,000	7,000
Net periodic benefit cost	21,000	47,000	6,000
Benefit Payments
Benefit Payments, 2015	127,000
Benefit Payments, 2016	114,000
Benefit Payments, 2017	120,000
Benefit Payments, 2018	125,000
Benefit Payments, 2019	129,000
Benefit Payments, 2020 to 2024	708,000
Georgia Power [Member] \| Other Postretirement Benefits [Member]
Components of net periodic
Service cost	6,000	7,000	7,000
Interest cost	34,000	31,000	37,000
Expected return on plan assets	(25,000)	(24,000)	(29,000)
Net amortization	2,000	12,000	10,000
Net periodic benefit cost	17,000	26,000	25,000
Benefit Payments
Benefit Payments, 2015	53,000
Benefit Payments, 2016	56,000
Benefit Payments, 2017	57,000
Benefit Payments, 2018	59,000
Benefit Payments, 2019	59,000
Benefit Payments, 2020 to 2024	289,000
Subsidy Receipts
Subsidy Receipts, 2015	(4,000)
Subsidy Receipts, 2016	(5,000)
Subsidy Receipts, 2017	(5,000)
Subsidy Receipts, 2018	(6,000)
Subsidy Receipts, 2019	(6,000)
Subsidy Receipts, 2020 to 2024	(32,000)
Benefit Payments and Subsidy Receipts, Total
Benefit Payments and Subsidy Receipts, 2015	49,000
Benefit Payments and Subsidy Receipts, 2016	51,000
Benefit Payments and Subsidy Receipts, 2017	52,000
Benefit Payments and Subsidy Receipts, 2018	53,000
Benefit Payments and Subsidy Receipts, 2019	53,000
Benefit Payments and Subsidy Receipts, 2020 to 2024	257,000
Georgia Power [Member] \| Pension Plans [Member]
Components of net periodic
Service cost	62,000	69,000	60,000
Interest cost	153,000	138,000	141,000
Expected return on plan assets	(228,000)	(212,000)	(221,000)
Recognized net (gain) loss	41,000	74,000	33,000
Net amortization	10,000	10,000	12,000
Net periodic benefit cost	38,000	79,000	25,000
Benefit Payments
Benefit Payments, 2015	199,000
Benefit Payments, 2016	169,000
Benefit Payments, 2017	177,000
Benefit Payments, 2018	183,000
Benefit Payments, 2019	190,000
Benefit Payments, 2020 to 2024	1,042,000
Gulf Power [Member]
Components of net periodic
Service cost	10,181	11,128	9,101
Interest cost	19,433	17,321	17,199
Expected return on plan assets	(28,468)	(26,435)	(25,932)
Recognized net (gain) loss	4,559	8,385	3,913
Net amortization	1,115	1,164	1,262
Net periodic benefit cost	6,820	11,563	5,543
Gulf Power [Member] \| Other Postretirement Benefits [Member]
Components of net periodic
Service cost	1,163	1,355	1,167
Interest cost	3,235	2,982	3,367
Expected return on plan assets	(1,306)	(1,238)	(1,311)
Net amortization	162	186	379
Net periodic benefit cost	3,254	3,285	3,602
Benefit Payments
Benefit Payments, 2015	4,694
Benefit Payments, 2016	4,982
Benefit Payments, 2017	5,136
Benefit Payments, 2018	5,300
Benefit Payments, 2019	5,326
Benefit Payments, 2020 to 2024	27,399
Subsidy Receipts
Subsidy Receipts, 2015	(431)
Subsidy Receipts, 2016	(480)
Subsidy Receipts, 2017	(535)
Subsidy Receipts, 2018	(594)
Subsidy Receipts, 2019	(660)
Subsidy Receipts, 2020 to 2024	(3,430)
Benefit Payments and Subsidy Receipts, Total
Benefit Payments and Subsidy Receipts, 2015	4,263
Benefit Payments and Subsidy Receipts, 2016	4,502
Benefit Payments and Subsidy Receipts, 2017	4,601
Benefit Payments and Subsidy Receipts, 2018	4,706
Benefit Payments and Subsidy Receipts, 2019	4,666
Benefit Payments and Subsidy Receipts, 2020 to 2024	23,969
Gulf Power [Member] \| Pension Plans [Member]
Components of net periodic
Service cost	10,181	11,128
Interest cost	19,433	17,321
Benefit Payments
Benefit Payments, 2015	22,002
Benefit Payments, 2016	18,683
Benefit Payments, 2017	19,950
Benefit Payments, 2018	21,019
Benefit Payments, 2019	22,229
Benefit Payments, 2020 to 2024	129,877
Mississippi Power [Member]
Components of net periodic
Service cost	10,123	11,067	9,416
Interest cost	20,093	18,062	18,019
Expected return on plan assets	(28,742)	(26,849)	(24,121)
Recognized net (gain) loss	4,937	9,461	4,100
Net amortization	1,088	1,143	1,309
Net periodic benefit cost	7,499	12,884	8,723
Mississippi Power [Member] \| Other Postretirement Benefits [Member]
Components of net periodic
Service cost	1,025	1,151	1,038
Interest cost	3,812	3,619	4,155
Expected return on plan assets	(1,585)	(1,472)	(1,552)
Net amortization	(188)	471	470
Net periodic benefit cost	3,064	3,769	4,111
Benefit Payments
Benefit Payments, 2015	5,387
Benefit Payments, 2016	5,632
Benefit Payments, 2017	5,911
Benefit Payments, 2018	6,185
Benefit Payments, 2019	6,475
Benefit Payments, 2020 to 2024	34,139
Subsidy Receipts
Subsidy Receipts, 2015	(512)
Subsidy Receipts, 2016	(566)
Subsidy Receipts, 2017	(622)
Subsidy Receipts, 2018	(680)
Subsidy Receipts, 2019	(735)
Subsidy Receipts, 2020 to 2024	(3,744)
Benefit Payments and Subsidy Receipts, Total
Benefit Payments and Subsidy Receipts, 2015	4,875
Benefit Payments and Subsidy Receipts, 2016	5,066
Benefit Payments and Subsidy Receipts, 2017	5,289
Benefit Payments and Subsidy Receipts, 2018	5,505
Benefit Payments and Subsidy Receipts, 2019	5,740
Benefit Payments and Subsidy Receipts, 2020 to 2024	30,395
Mississippi Power [Member] \| Pension Plans [Member]
Components of net periodic
Service cost	10,123	11,067
Interest cost	20,093	18,062
Benefit Payments
Benefit Payments, 2015	23,304
Benefit Payments, 2016	19,551
Benefit Payments, 2017	20,816
Benefit Payments, 2018	21,905
Benefit Payments, 2019	23,337
Benefit Payments, 2020 to 2024	$ 135,320

Defined benefit plan expected future benefit payments and subsidy receipts in five fiscal years thereafter.

No definition available.

Name:	so_DefinedBenefitPlanExpectedFutureBenefitPaymentsAndSubsidyReceiptsInFiveFiscalYearsThereAfter
Namespace Prefix:	so_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Defined benefit plan expected future benefit payments and subsidy receipts in year five.

+ References

No definition available.

+ Details

Name:	so_DefinedBenefitPlanExpectedFutureBenefitPaymentsAndSubsidyReceiptsInYearFive
Namespace Prefix:	so_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Defined benefit plan expected future benefit payments and subsidy receipts in year four.

+ References

No definition available.

+ Details

Name:	so_DefinedBenefitPlanExpectedFutureBenefitPaymentsAndSubsidyReceiptsInYearFour
Namespace Prefix:	so_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Defined benefit plan expected future benefit payments and subsidy receipts in year one.

+ References

No definition available.

+ Details

Name:	so_DefinedBenefitPlanExpectedFutureBenefitPaymentsAndSubsidyReceiptsInYearOne
Namespace Prefix:	so_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Defined benefit plan expected future benefit payments and subsidy receipts in year three.

+ References

No definition available.

+ Details

Name:	so_DefinedBenefitPlanExpectedFutureBenefitPaymentsAndSubsidyReceiptsInYearThree
Namespace Prefix:	so_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Defined benefit plan expected future benefit payments and subsidy receipts in year two.

+ References

No definition available.

+ Details

Name:	so_DefinedBenefitPlanExpectedFutureBenefitPaymentsAndSubsidyReceiptsInYearTwo
Namespace Prefix:	so_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	so_SummaryOfEstimationOfFutureBenefitPaymentsAndSubsidyReceiptsBasedOnAssumptionsUsedToMeasureAccumulatedBenefitObligationForPostretirementPlansAbstract
Namespace Prefix:	so_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512136

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 60

-Glossary Expected Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512171

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(3)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanInterestCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(1)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Service Cost (Component of Net Periodic Pension Cost)

-URI http://asc.fasb.org/extlink&oid=6525008

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanServiceCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DisclosureOfExpectedGrossPrescriptionDrugSubsidyReceiptsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the prescription drug subsidy receipts to be received after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts to be received in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts to be received in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearFive1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts to be received in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearFour1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts to be received in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearThree1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts to be received in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearTwo1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=so_AlabamaPowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=so_GeorgiaPowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=so_GulfPowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=so_MississippiPowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: