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Acquisitions and Dispositions (Scheduled Principal Payments of Long-Term Debt) (Detail) $ in Millions | Dec. 31, 2018 USD ($)
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Debt Instrument [Line Items] |
Weighted- average Coupon, 2019 | 3.23%
Weighted- average Coupon, 2020 | 2.80%
Weighted- average Coupon, 2021 | 3.64%
Weighted- average Coupon, 2022 | 3.02%
Weighted- average Coupon, 2023 | 3.41%
Weighted- average Coupon, Thereafter | 4.51%
SCANA |
Debt Instrument [Line Items] |
2019 | $ 59
2020 | 368
2021 | 797
2022 | 266
2023 | 14
Thereafter | 5,291
Total | $ 6,795
Weighted- average Coupon, 2019 | 3.91%
Weighted- average Coupon, 2020 | 6.26%
Weighted- average Coupon, 2021 | 4.20%
Weighted- average Coupon, 2022 | 5.22%
Weighted- average Coupon, 2023 | 3.29%
Weighted- average Coupon, Thereafter | 5.51%
Weighted- average Coupon, Total | 5.36%
SCANA | Unsecured Senior Notes |
Debt Instrument [Line Items] |
2019 | $ 4
2020 | 4
2021 | 4
2022 | 4
2023 | 4
Thereafter | 50
Total | 70
SCANA | Unsecured Medium-term Notes [Member] |
Debt Instrument [Line Items] |
2020 | 250
2021 | 300
2022 | 250
Total | 800
SCANA | First Mortgage Bonds [Member] |
Debt Instrument [Line Items] |
2021 | 330
Thereafter | 4,660
Total | 4,990
SCANA | PSNC Senior Notes And Debentures [Member] |
Debt Instrument [Line Items] |
2020 | 100
2021 | 150
Thereafter | 450
Total | 700
SCANA | Senior Notes |
Debt Instrument [Line Items] |
2019 | 7
2020 | 7
2021 | 7
2022 | 7
2023 | 7
Thereafter | 5
Total | 40
SCANA | Industrial and Pollution Control Bonds [Member] |
Debt Instrument [Line Items] |
Thereafter | 122
Total | 122
SCANA | Other Long Term Debt [Member] |
Debt Instrument [Line Items] |
2019 | 48
2020 | 7
2021 | 6
2022 | 5
2023 | 3
Thereafter | 4
Total | $ 73

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