LONG-TERM AND SHORT-TERM DEBT (Tables)
|
12 Months Ended |
Dec. 31, 2018 |
|---|
| Debt Instrument [Line Items] |
|
| Schedule of Debt [Table Text Block] |
: | | | | | | | | | | | | | | | | | | | | The Company | | | | | | | | | | | | | December 31, | | | | | | 2018 | | 2017 | Dollars in millions | | Maturity | | Balance | | Rate | | Balance | | Rate | SCANA Medium Term Notes (unsecured) | | 2020 | - | 2022 | | $ | 800 |
| | 5.42 | % | | $ | 800 |
| | 5.42 | % | SCANA Senior Notes (unsecured) (a) | | 2019 | - | 2034 | | 70 |
| | 3.44 | % | | 75 |
| | 2.18 | % | SCE&G First Mortgage Bonds (secured) | | 2021 | - | 2065 | | 4,990 |
| | 5.52 | % | | 4,840 |
| | 5.80 | % | GENCO Notes (secured) | | 2019 | - | 2024 | | 40 |
| | 5.49 | % | | 207 |
| | 5.94 | % | Industrial and Pollution Control Bonds (b) | | 2028 | - | 2038 | | 122 |
| | 3.52 | % | | 122 |
| | 3.52 | % | PSNC Energy Senior Debentures and Notes | | 2020 | - | 2047 | | 700 |
| | 5.07 | % | | 600 |
| | 5.19 | % | Other | | 2019 | - | 2027 | | 73 |
| | 3.46 | % | | 28 |
| | 2.83 | % | Total debt | | | | | | 6,795 |
| | | | 6,672 |
| | | Current maturities of long-term debt | | | | | | (59 | ) | | | | (727 | ) | | | Unamortized discount, net | | | | | | (2 | ) | | | | (1 | ) | | | Unamortized debt issuance costs | | | | | | (39 | ) | | | | (38 | ) | | | Total long-term debt, net | | | | | | $ | 6,695 |
| | | | $ | 5,906 |
| | |
|
|
| Schedule of Line of Credit Facilities [Text Block] |
| | | | | | | | | | | | | | | | | | December 31, 2017 | | | | | | | | | Lines of credit: | | | | | | | | | Five-year, expiring December 2020 | | $ | 1,300.0 |
| | $ | 400.0 |
| | $ | 700.0 |
| | $ | 200.0 |
| Fuel Company five-year, expiring December 2020 | | 500.0 |
| | — |
| | 500.0 |
| | — |
| Three-year, expiring December 2018 | | 200.0 |
| | — |
| | 200.0 |
| | — |
| Total committed long-term | | 2,000.0 |
| | 400.0 |
| | 1,400.0 |
| | 200.0 |
| Outstanding commercial paper (270 or fewer days) | | 350.3 |
| | — |
| | 251.6 |
| | 98.7 |
| Weighted average interest rate | | | | | | 1.92 | % | | 1.93 | % | Letters of credit supported by LOC | | 3.3 |
| | 3.0 |
| | 0.3 |
| | — |
| Available | | $ | 1,646.4 |
| | $ | 397.0 |
| | $ | 1,148.1 |
| | $ | 101.3 |
|
: | | | | | | | | | | | | | | | | | | Millions of dollars | | Total | | SCANA | | SCE&G | | PSNC Energy | December 31, 2018 | | | | | | | | | Lines of credit: | | | | |
| | | | | Five-year, expiring December 2020 | | $ | 1,300.0 |
| | $ | 400.0 |
| | $ | 700.0 |
| | $ | 200.0 |
| Fuel Company five-year, expiring December 2020 | | 500.0 |
| | — |
| | 500.0 |
| | — |
| Total committed long-term | | 1,800.0 |
| | 400.0 |
| | 1,200.0 |
| | 200.0 |
| LOC advances | | 40.0 |
| | 40.0 |
| | — |
| | — |
| Weighted average interest rate | | | | 3.87 | % | | | | | Outstanding commercial paper (270 or fewer days) | | 172.9 |
| | 2.0 |
| | 73.2 |
| | 97.7 |
| Weighted average interest rate | | | | 3.65 | % | | 3.82 | % | | 3.49 | % | Letters of credit supported by LOC | | 37.6 |
| | 37.3 |
| | 0.3 |
| | — |
| Available | | $ | 1,549.5 |
| | $ | 320.7 |
| | $ | 1,126.5 |
| | $ | 102.3 |
|
|
| SCE&G |
|
| Debt Instrument [Line Items] |
|
| Schedule of Debt [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | Consolidated SCE&G | | | | | | | | | | | | | December 31, | | | | | | 2018 | | 2017 | Dollars in millions | | Maturity | | Balance | | Rate | | Balance | | Rate | First Mortgage Bonds (secured) | | 2021 | - | 2065 | | $ | 4,990 |
| | 5.52 | % | | $ | 4,840 |
| | 5.80 | % | GENCO Notes (secured) | | 2019 | - | 2024 | | 40 |
| | 5.49 | % | | 207 |
| | 5.94 | % | Industrial and Pollution Control Bonds (b) | | 2028 | - | 2038 | | 122 |
| | 3.52 | % | | 122 |
| | 3.52 | % | Other | | 2019 | - | 2027 | | 30 |
| | 2.97 | % | | 28 |
| | 2.83 | % | Total debt | | | | | | 5,182 |
| | | | 5,197 |
| | |
| Current maturities of long-term debt | | | | | | (14 | ) | | | | (723 | ) | | |
| Unamortized premium (discount), net | | | | | | (1 | ) | | | | 1 |
| | |
| Unamortized debt issuance costs | | | | | | (35 | ) | | | | (34 | ) | | | Total long-term debt, net | | | | | | $ | 5,132 |
| | | | $ | 4,441 |
| | |
|
|
| Schedule of Line of Credit Facilities [Text Block] |
| | | | | | | | | | | | | | | | | | Millions of dollars | | Total | | SCANA | | SCE&G | | PSNC Energy | December 31, 2018 | | | | | | | | | Lines of credit: | | | | |
| | | | | Five-year, expiring December 2020 | | $ | 1,300.0 |
| | $ | 400.0 |
| | $ | 700.0 |
| | $ | 200.0 |
| Fuel Company five-year, expiring December 2020 | | 500.0 |
| | — |
| | 500.0 |
| | — |
| Total committed long-term | | 1,800.0 |
| | 400.0 |
| | 1,200.0 |
| | 200.0 |
| LOC advances | | 40.0 |
| | 40.0 |
| | — |
| | — |
| Weighted average interest rate | | | | 3.87 | % | | | | | Outstanding commercial paper (270 or fewer days) | | 172.9 |
| | 2.0 |
| | 73.2 |
| | 97.7 |
| Weighted average interest rate | | | | 3.65 | % | | 3.82 | % | | 3.49 | % | Letters of credit supported by LOC | | 37.6 |
| | 37.3 |
| | 0.3 |
| | — |
| Available | | $ | 1,549.5 |
| | $ | 320.7 |
| | $ | 1,126.5 |
| | $ | 102.3 |
|
| | | | | | | | | | | | | | | | | | December 31, 2017 | | | | | | | | | Lines of credit: | | | | | | | | | Five-year, expiring December 2020 | | $ | 1,300.0 |
| | $ | 400.0 |
| | $ | 700.0 |
| | $ | 200.0 |
| Fuel Company five-year, expiring December 2020 | | 500.0 |
| | — |
| | 500.0 |
| | — |
| Three-year, expiring December 2018 | | 200.0 |
| | — |
| | 200.0 |
| | — |
| Total committed long-term | | 2,000.0 |
| | 400.0 |
| | 1,400.0 |
| | 200.0 |
| Outstanding commercial paper (270 or fewer days) | | 350.3 |
| | — |
| | 251.6 |
| | 98.7 |
| Weighted average interest rate | | | | | | 1.92 | % | | 1.93 | % | Letters of credit supported by LOC | | 3.3 |
| | 3.0 |
| | 0.3 |
| | — |
| Available | | $ | 1,646.4 |
| | $ | 397.0 |
| | $ | 1,148.1 |
| | $ | 101.3 |
|
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