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Balance Sheets - APC (Parenthetical) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Common Stockholders' Equity: |  |
Common stock, par value (in dollars per share) | $ 5 | $ 5
Common stock, shares authorized (in shares) | 1,500,000,000 | 1,500,000,000
Redeemable Preferred Stock |  |
Cumulative preferred stock |  |
Annual dividend requirement | $ 15,000,000 | $ 15,000,000
Redeemable Preferred Stock, $100 par or stated value |  |
Cumulative preferred stock |  |
Par value (in dollars per share) | $ 100 | $ 100
Shares authorized (in shares) | 10,000,000 | 10,000,000
Shares outstanding (in shares) | 500,000 | 500,000
Redeemable Preferred Stock, $100 par or stated value | Minimum |  |
Cumulative preferred stock |  |
Dividend rate | 4.20% | 4.20%
Redeemable Preferred Stock, $100 par or stated value | Maximum |  |
Cumulative preferred stock |  |
Dividend rate | 4.92% | 4.92%
Redeemable Preferred Stock, $1 par value |  |
Cumulative preferred stock |  |
Par value (in dollars per share) | $ 1 | $ 1
Dividend rate | 5.00% | 5.00%
Shares authorized (in shares) | 28,000,000 | 28,000,000
Shares outstanding (in shares) | 10,000,000 | 10,000,000
Alabama Power |  |
Common Stockholders' Equity: |  |
Common stock, par value (in dollars per share) | $ 40 | $ 40
Common stock, shares authorized (in shares) | 40,000,000 | 40,000,000
Common stock, shares outstanding (in shares) | 31,000,000 | 31,000,000
Alabama Power | Redeemable Preferred Stock |  |
Cumulative preferred stock |  |
Annual dividend requirement | $ 15,000,000 | $ 15,000,000
Alabama Power | Redeemable Preferred Stock, $100 par or stated value |  |
Cumulative preferred stock |  |
Par value (in dollars per share) | $ 100 | $ 100
Shares authorized (in shares) | 3,900,000 | 3,900,000
Shares outstanding (in shares) | 500,000 | 500,000
Alabama Power | Redeemable Preferred Stock, $100 par or stated value | Minimum |  |
Cumulative preferred stock |  |
Dividend rate | 4.20% | 4.20%
Alabama Power | Redeemable Preferred Stock, $100 par or stated value | Maximum |  |
Cumulative preferred stock |  |
Dividend rate | 4.92% | 4.92%
Alabama Power | Redeemable Preferred Stock, $1 par value |  |
Cumulative preferred stock |  |
Par value (in dollars per share) | $ 1 | $ 1
Dividend rate | 5.00% | 5.00%
Shares authorized (in shares) | 27,500,000 | 27,500,000
Shares outstanding (in shares) | 10,000,000 | 10,000,000
Alabama Power | Redeemable Preferred Stock, $25 stated value |  |
Cumulative preferred stock |  |
Par value (in dollars per share) | $ 25 | $ 25

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