Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions |
Jun. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Other intangible assets, amortization | $ 304 | $ 280 |
| SOUTHERN POWER CO | ||
| Other intangible assets, amortization | 79 | 69 |
| SOUTHERN Co GAS | ||
| Other intangible assets, amortization | $ 186 | $ 176 |