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Financing and Leases - Schedule of Credit Arrangements (Details) $ in Millions | Jun. 30, 2024 USD ($)
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Line of Credit Facility [Line Items] |
Expires, 2025 | $ 580
Expires, 2026 | 650
Expires, 2027 | 275
Expires, 2028 | 6,400
Total | 7,905
Unused | 7,877
Expires within One Year | 580
Southern Company parent |
Line of Credit Facility [Line Items] |
Expires, 2025 | 150
Expires, 2026 | 0
Expires, 2027 | 0
Expires, 2028 | 1,850
Total | 2,000
Unused | 1,998
Expires within One Year | 150
ALABAMA POWER CO |
Line of Credit Facility [Line Items] |
Expires, 2025 | 0
Expires, 2026 | 650
Expires, 2027 | 0
Expires, 2028 | 700
Total | 1,350
Unused | 1,350
Expires within One Year | 0
GEORGIA POWER CO |
Line of Credit Facility [Line Items] |
Expires, 2025 | 300
Expires, 2026 | 0
Expires, 2027 | 0
Expires, 2028 | 1,750
Total | 2,050
Unused | 2,026
Expires within One Year | 300
MISSISSIPPI POWER CO |
Line of Credit Facility [Line Items] |
Expires, 2025 | 0
Expires, 2026 | 0
Expires, 2027 | 275
Expires, 2028 | 0
Total | 275
Unused | 275
Expires within One Year | 0
SOUTHERN POWER CO |
Line of Credit Facility [Line Items] |
Expires, 2025 | 0
Expires, 2026 | 0
Expires, 2027 | 0
Expires, 2028 | 600
Total | 600
Unused | 600
Expires within One Year | 0
SOUTHERN POWER CO | Continuing Letter of Credit Facility A |
Line of Credit Facility [Line Items] |
Expires, 2025 | 75
Expires, 2026 | 100
Unused | 10
SOUTHERN POWER CO | Continuing Letter of Credit Facility B |
Line of Credit Facility [Line Items] |
Unused | 11
SOUTHERN Co GAS |
Line of Credit Facility [Line Items] |
Expires, 2025 | 100
Expires, 2026 | 0
Expires, 2027 | 0
Expires, 2028 | 1,500
Total | 1,600
Unused | 1,598
Expires within One Year | 100
SEGCO |
Line of Credit Facility [Line Items] |
Expires, 2025 | 30
Expires, 2026 | 0
Expires, 2027 | 0
Expires, 2028 | 0
Total | 30
Unused | 30
Expires within One Year | 30
Southern Company and Southern Power |
Line of Credit Facility [Line Items] |
Expires, 2028 | 2,450
Southern Company Gas Capital |
Line of Credit Facility [Line Items] |
Expires, 2028 | 800
Nicor Gas |
Line of Credit Facility [Line Items] |
Expires, 2024 | 100
Expires, 2028 | $ 700

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