Gas -non regulated revenues

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- Definition

Total Operating Revenues Gas

+ References

No definition available.

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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- Definition

Revenue derived from the regulated (by a federal, state, or local government or agency) generation, transmission and distribution of electricity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(b))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

The total amount of regulated operating revenues recognized during the period.

+ References

No definition available.

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- Definition

The amount of regulated gas operating revenues recognized during the period.

+ References

No definition available.

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- Definition

The amount of regulated other operating revenues recognized during the period.

+ References

No definition available.

+ Details

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

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-Publisher FASB
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-Topic 606
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

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-Publisher FASB
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-Topic 606
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-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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REVENUE RECOGNITION (Details) - USD ($) $ in Millions	3 Months Ended
REVENUE RECOGNITION (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Electric Domestic Regulated Revenue	$ 546.0	$ 577.0
Regulated Operating Revenue, Gas	361.0	322.0
Capitalized Contract Cost, Net	15.9		$ 16.3
Total Operating Revenues Gas	361.0
Capitalized Contract Cost, Amortization	(0.4)
SCEG
Regulated Operating Revenue	702.0	719.0
Electric Operations
Electric Domestic Regulated Revenue	546.0	577.0
Electric Operations \| SCEG
Electric Domestic Regulated Revenue	547.0	$ 578.0
Disaggregation of Revenue [Table Text Block]	543.0
Other Revenues	3.0
Regulated Operating Revenue	546.0
Residential [Member]
Total Operating Revenues Gas	231.0
Gas -non regulated revenues	106.0
Residential [Member] \| SCEG
Electric Domestic Regulated Revenue	252.0
Regulated Operating Revenue, Gas	86.0
Residential [Member] \| PSNC Energy [Member]
Regulated Operating Revenue, Gas	145.0
Wholesale [Member]
Total Operating Revenues Gas	13.0
Gas -non regulated revenues	13.0
Wholesale [Member] \| SCEG
Electric Domestic Regulated Revenue	37.0
Regulated Operating Revenue, Gas	5.0
Wholesale [Member] \| PSNC Energy [Member]
Regulated Operating Revenue, Gas	8.0
Industrial [Member]
Total Operating Revenues Gas	30.0
Gas -non regulated revenues	120.0
Industrial [Member] \| SCEG
Electric Domestic Regulated Revenue	85.0
Regulated Operating Revenue, Gas	24.0
Industrial [Member] \| PSNC Energy [Member]
Regulated Operating Revenue, Gas	6.0
Commercial [Member]
Total Operating Revenues Gas	87.0
Gas -non regulated revenues	34.0
Commercial [Member] \| SCEG
Electric Domestic Regulated Revenue	169.0
Regulated Operating Revenue, Gas	39.0
Commercial [Member] \| PSNC Energy [Member]
Regulated Operating Revenue, Gas	48.0
Gas Distribution
Total Operating Revenues Gas	361.0
Other Revenues	0.0
Gas Distribution \| SCEG
Disaggregation of Revenue [Table Text Block]	154.0
Other Revenues	1.0
Regulated Operating Revenue	155.0
Gas Distribution \| PSNC Energy [Member]
Disaggregation of Revenue [Table Text Block]	207.0
Other Revenues	(1.0)
Regulated Operating Revenue	206.0
Gas Marketing segment [Member]
Disaggregation of Revenue [Table Text Block]	273.0
Other Revenues	0.0
Regulated Operating Revenue	$ 273.0