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Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2022
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
AEP |  |  |  |  |  |  |  |  |  |
|  | Cash Flow Hedges |  | Pension and OPEB |  |
For the Year Ended December 31, 2022 |  | Commodity |  | Interest Rate |  | Amortization of Deferred Costs |  | Changes in Funded Status |  | Total
|  | (in millions)
Balance in AOCI as of December 31, 2021 |  | $ | 163.7 |  |  | $ | (21.3) |  |  | $ | 115.6 |  |  | $ | (73.2) |  |  | $ | 184.8 |
Change in Fair Value Recognized in AOCI, Net of Tax |  | 477.3 |  |  | 18.4 |  | (a) | — |  |  | (155.4) |  |  | 340.3 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Generation & Marketing Revenues (b) |  | 0.1 |  |  | — |  |  | — |  |  | — |  |  | 0.1 |
Purchased Electricity for Resale (b) |  | (528.6) |  |  | — |  |  | — |  |  | — |  |  | (528.6) |
Interest Expense (b) |  | — |  |  | 4.0 |  |  | — |  |  | — |  |  | 4.0 |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  | (21.8) |  |  | — |  |  | (21.8) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  | 8.6 |  |  | — |  |  | 8.6 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | (528.5) |  |  | 4.0 |  |  | (13.2) |  |  | — |  |  | (537.7) |
Income Tax (Expense) Benefit |  | (111.0) |  |  | 0.8 |  |  | (2.8) |  |  | — |  |  | (113.0) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | (417.5) |  |  | 3.2 |  |  | (10.4) |  |  | — |  |  | (424.7) |
Reclassifications of KPCo Pension and OPEB Regulatory Assets to AOCI |  | — |  |  | — |  |  | — |  |  | (21.1) |  |  | (21.1) |
Income Tax (Expense) Benefit |  | — |  |  | — |  |  | — |  |  | (4.4) |  |  | (4.4) |
Reclassifications of KPCo Pension and OPEB Regulatory Assets to AOCI, Net of Income Tax (Expense) Benefit |  | — |  |  | — |  |  | — |  |  | (16.7) |  |  | (16.7) |
Net Current Period Other Comprehensive Income (Loss) |  | 59.8 |  |  | 21.6 |  |  | (10.4) |  |  | (172.1) |  |  | (101.1) |
Balance in AOCI as of December 31, 2022 |  | $ | 223.5 |  |  | $ | 0.3 |  |  | $ | 105.2 |  |  | $ | (245.3) |  |  | $ | 83.7 |
AEP |  |  |  |  |  |  |  |  |  |  |  |
|  | Cash Flow Hedges |  |  |  | Pension and OPEB |  |
For the Year Ended December 31, 2021 |  | Commodity |  | Interest Rate |  |  |  | Amortization of Deferred Costs |  | Changes in Funded Status |  | Total
|  | (in millions)
Balance in AOCI as of December 31, 2020 |  | $ | (60.6) |  |  | $ | (47.5) |  |  |  |  | $ | 123.7 |  |  | $ | (100.7) |  |  | $ | (85.1) |
Change in Fair Value Recognized in AOCI, Net of Tax |  | 488.2 |  |  | 21.1 |  | (a) |  |  | — |  |  | 27.5 |  |  | 536.8 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |  |  |
Generation & Marketing Revenues (b) |  | 0.7 |  |  | — |  |  |  |  | — |  |  | — |  |  | 0.7 |
Purchased Electricity for Resale (b) |  | (334.8) |  |  | — |  |  |  |  | — |  |  | — |  |  | (334.8) |
Interest Expense (b) |  | — |  |  | 6.5 |  |  |  |  | — |  |  | — |  |  | 6.5 |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  |  |  | (19.4) |  |  | — |  |  | (19.4) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  |  |  | 9.1 |  |  | — |  |  | 9.1 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | (334.1) |  |  | 6.5 |  |  |  |  | (10.3) |  |  | — |  |  | (337.9) |
Income Tax (Expense) Benefit |  | (70.2) |  |  | 1.4 |  |  |  |  | (2.2) |  |  | — |  |  | (71.0) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | (263.9) |  |  | 5.1 |  |  |  |  | (8.1) |  |  | — |  |  | (266.9) |
Net Current Period Other Comprehensive Income (Loss) |  | 224.3 |  |  | 26.2 |  |  |  |  | (8.1) |  |  | 27.5 |  |  | 269.9 |
Balance in AOCI as of December 31, 2021 |  | $ | 163.7 |  |  | $ | (21.3) |  |  |  |  | $ | 115.6 |  |  | $ | (73.2) |  |  | $ | 184.8 |
|  | Cash Flow Hedges |  |  |  | Pension and OPEB |  |
For the Year Ended December 31, 2020 |  | Commodity |  | Interest Rate |  |  |  | Amortization of Deferred Costs |  | Changes in Funded Status |  | Total
|  | (in millions)
Balance in AOCI as of December 31, 2019 |  | $ | (103.5) |  |  | $ | (11.5) |  |  |  |  | $ | 130.7 |  |  | $ | (163.4) |  |  | $ | (147.7) |
Change in Fair Value Recognized in AOCI, Net of Tax |  | (89.2) |  |  | (39.9) |  | (a) |  |  | — |  |  | 62.7 |  |  | (66.4) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |  |  |
Generation & Marketing Revenues (b) |  | (0.4) |  |  | — |  |  |  |  | — |  |  | — |  |  | (0.4) |
Purchased Electricity for Resale (b) |  | 167.6 |  |  | — |  |  |  |  | — |  |  | — |  |  | 167.6 |
Interest Expense (b) |  | — |  |  | 4.9 |  |  |  |  | — |  |  | — |  |  | 4.9 |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  |  |  | (19.2) |  |  | — |  |  | (19.2) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  |  |  | 10.3 |  |  | — |  |  | 10.3 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | 167.2 |  |  | 4.9 |  |  |  |  | (8.9) |  |  | — |  |  | 163.2 |
Income Tax (Expense) Benefit |  | 35.1 |  |  | 1.0 |  |  |  |  | (1.9) |  |  | — |  |  | 34.2 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | 132.1 |  |  | 3.9 |  |  |  |  | (7.0) |  |  | — |  |  | 129.0 |
Net Current Period Other Comprehensive Income (Loss) |  | 42.9 |  |  | (36.0) |  |  |  |  | (7.0) |  |  | 62.7 |  |  | 62.6 |
Balance in AOCI as of December 31, 2020 |  | $ | (60.6) |  |  | $ | (47.5) |  |  |  |  | $ | 123.7 |  |  | $ | (100.7) |  |  | $ | (85.1) |
AEP Texas |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2022 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  | (in millions)
Balance in AOCI as of December 31, 2021 |  |  |  | $ | (1.3) |  |  | $ | 5.3 |  |  | $ | (10.5) |  |  | $ | (6.5) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | (3.2) |  |  | (3.2) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 1.3 |  |  | — |  |  | — |  |  | 1.3 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (0.1) |  |  | — |  |  | (0.1) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.2 |  |  | — |  |  | 0.2 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 1.3 |  |  | 0.1 |  |  | — |  |  | 1.4 |
Income Tax (Expense) Benefit |  |  |  | 0.3 |  |  | — |  |  | — |  |  | 0.3 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.0 |  |  | 0.1 |  |  | — |  |  | 1.1 |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.0 |  |  | 0.1 |  |  | (3.2) |  |  | (2.1) |
Balance in AOCI as of December 31, 2022 |  |  |  | $ | (0.3) |  |  | $ | 5.4 |  |  | $ | (13.7) |  |  | $ | (8.6) |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2021 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  | (in millions)
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (2.3) |  |  | $ | 5.1 |  |  | $ | (11.7) |  |  | $ | (8.9) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | 0.1 |  |  | — |  |  | 1.2 |  |  | 1.3 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 1.2 |  |  | — |  |  | — |  |  | 1.2 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (0.1) |  |  | — |  |  | (0.1) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.3 |  |  | — |  |  | 0.3 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 1.2 |  |  | 0.2 |  |  | — |  |  | 1.4 |
Income Tax (Expense) Benefit |  |  |  | 0.3 |  |  | — |  |  | — |  |  | 0.3 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 0.9 |  |  | 0.2 |  |  | — |  |  | 1.1 |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.0 |  |  | 0.2 |  |  | 1.2 |  |  | 2.4 |
Balance in AOCI as of December 31, 2021 |  |  |  | $ | (1.3) |  |  | $ | 5.3 |  |  | $ | (10.5) |  |  | $ | (6.5) |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2020 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  | (in millions)
Balance in AOCI as of December 31, 2019 |  |  |  | $ | (3.4) |  |  | $ | 4.9 |  |  | $ | (14.3) |  |  | $ | (12.8) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | 0.1 |  |  | — |  |  | 2.6 |  |  | 2.7 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 1.3 |  |  | — |  |  | — |  |  | 1.3 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (0.1) |  |  | — |  |  | (0.1) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.3 |  |  | — |  |  | 0.3 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 1.3 |  |  | 0.2 |  |  | — |  |  | 1.5 |
Income Tax (Expense) Benefit |  |  |  | 0.3 |  |  | — |  |  | — |  |  | 0.3 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.0 |  |  | 0.2 |  |  | — |  |  | 1.2 |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.1 |  |  | 0.2 |  |  | 2.6 |  |  | 3.9 |
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (2.3) |  |  | $ | 5.1 |  |  | $ | (11.7) |  |  | $ | (8.9) |
APCo |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2022 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  | (in millions)
Balance in AOCI as of December 31, 2021 |  |  |  | $ | 7.5 |  |  | $ | 1.2 |  |  | $ | 15.7 |  |  | $ | 24.4 |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | (24.1) |  |  | (24.1) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | (1.0) |  |  | — |  |  | — |  |  | (1.0) |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (5.4) |  |  | — |  |  | (5.4) |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | (1.0) |  |  | (5.4) |  |  | — |  |  | (6.4) |
Income Tax (Expense) Benefit |  |  |  | (0.2) |  |  | (1.1) |  |  | — |  |  | (1.3) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | (0.8) |  |  | (4.3) |  |  | — |  |  | (5.1) |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | (0.8) |  |  | (4.3) |  |  | (24.1) |  |  | (29.2) |
Balance in AOCI as of December 31, 2022 |  |  |  | $ | 6.7 |  |  | $ | (3.1) |  |  | $ | (8.4) |  |  | $ | (4.8) |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedges - |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2021 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (0.8) |  |  | $ | 5.4 |  |  | $ | 2.6 |  |  | $ | 7.2 |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | 9.2 |  |  | — |  |  | 13.1 |  |  | 22.3 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | (1.1) |  |  | — |  |  | — |  |  | (1.1) |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (5.3) |  |  | — |  |  | (5.3) |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | (1.1) |  |  | (5.3) |  |  | — |  |  | (6.4) |
Income Tax (Expense) Benefit |  |  |  | (0.2) |  |  | (1.1) |  |  | — |  |  | (1.3) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | (0.9) |  |  | (4.2) |  |  | — |  |  | (5.1) |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 8.3 |  |  | (4.2) |  |  | 13.1 |  |  | 17.2 |
Balance in AOCI as of December 31, 2021 |  |  |  | $ | 7.5 |  |  | $ | 1.2 |  |  | $ | 15.7 |  |  | $ | 24.4 |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedges - |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2020 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2019 |  |  |  | $ | 0.9 |  |  | $ | 9.2 |  |  | $ | (5.1) |  |  | $ | 5.0 |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | (0.7) |  |  | — |  |  | 7.7 |  |  | 7.0 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | (1.3) |  |  | — |  |  | — |  |  | (1.3) |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (5.3) |  |  | — |  |  | (5.3) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.5 |  |  | — |  |  | 0.5 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | (1.3) |  |  | (4.8) |  |  | — |  |  | (6.1) |
Income Tax (Expense) Benefit |  |  |  | (0.3) |  |  | (1.0) |  |  | — |  |  | (1.3) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | (1.0) |  |  | (3.8) |  |  | — |  |  | (4.8) |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | (1.7) |  |  | (3.8) |  |  | 7.7 |  |  | 2.2 |
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (0.8) |  |  | $ | 5.4 |  |  | $ | 2.6 |  |  | $ | 7.2 |
I&M |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2022 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2021 |  |  |  | $ | (6.7) |  |  | $ | 4.7 |  |  | $ | 0.7 |  |  | $ | (1.3) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | (0.3) |  |  | (0.3) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 2.0 |  |  | — |  |  | — |  |  | 2.0 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (0.8) |  |  | — |  |  | (0.8) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.4 |  |  | — |  |  | 0.4 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 2.0 |  |  | (0.4) |  |  | — |  |  | 1.6 |
Income Tax (Expense) Benefit |  |  |  | 0.4 |  |  | (0.1) |  |  | — |  |  | 0.3 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.6 |  |  | (0.3) |  |  | — |  |  | 1.3 |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.6 |  |  | (0.3) |  |  | (0.3) |  |  | 1.0 |
Balance in AOCI as of December 31, 2022 |  |  |  | $ | (5.1) |  |  | $ | 4.4 |  |  | $ | 0.4 |  |  | $ | (0.3) |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2021 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (8.3) |  |  | $ | 4.8 |  |  | $ | (3.5) |  |  | $ | (7.0) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | 4.2 |  |  | 4.2 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 2.0 |  |  | — |  |  | — |  |  | 2.0 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (0.8) |  |  | — |  |  | (0.8) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.7 |  |  | — |  |  | 0.7 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 2.0 |  |  | (0.1) |  |  | — |  |  | 1.9 |
Income Tax (Expense) Benefit |  |  |  | 0.4 |  |  | — |  |  | — |  |  | 0.4 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.6 |  |  | (0.1) |  |  | — |  |  | 1.5 |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.6 |  |  | (0.1) |  |  | 4.2 |  |  | 5.7 |
Balance in AOCI as of December 31, 2021 |  |  |  | $ | (6.7) |  |  | $ | 4.7 |  |  | $ | 0.7 |  |  | $ | (1.3) |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2020 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2019 |  |  |  | $ | (9.9) |  |  | $ | 4.9 |  |  | $ | (6.6) |  |  | $ | (11.6) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | 3.1 |  |  | 3.1 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 2.0 |  |  | — |  |  | — |  |  | 2.0 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (0.8) |  |  | — |  |  | (0.8) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.7 |  |  | — |  |  | 0.7 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 2.0 |  |  | (0.1) |  |  | — |  |  | 1.9 |
Income Tax (Expense) Benefit |  |  |  | 0.4 |  |  | — |  |  | — |  |  | 0.4 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.6 |  |  | (0.1) |  |  | — |  |  | 1.5 |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.6 |  |  | (0.1) |  |  | 3.1 |  |  | 4.6 |
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (8.3) |  |  | $ | 4.8 |  |  | $ | (3.5) |  |  | $ | (7.0) |
PSO
|  |  |  | Cash Flow Hedge – |  |  |  |  |  |
For the Year Ended December 31, 2022 |  |  |  | Interest Rate |  |  |  |  |  |
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2021 |  |  |  | $ | — |  |  |  |  |  |  |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | 1.3 |  |  |  |  |  |  |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | — |  |  |  |  |  |  |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | — |  |  |  |  |  |  |
Income Tax (Expense) Benefit |  |  |  | — |  |  |  |  |  |  |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | — |  |  |  |  |  |  |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.3 |  |  |  |  |  |  |
Balance in AOCI as of December 31, 2022 |  |  |  | $ | 1.3 |  |  |  |  |  |  |
|  |  |  | Cash Flow Hedge – |  |  |  |  |  |
For the Year Ended December 31, 2021 |  |  |  | Interest Rate |  |  |  |  |  |
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2020 |  |  |  | $ | 0.1 |  |  |  |  |  |  |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  |  |  |  |  |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | (0.1) |  |  |  |  |  |  |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | (0.1) |  |  |  |  |  |  |
Income Tax (Expense) Benefit |  |  |  | — |  |  |  |  |  |  |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | (0.1) |  |  |  |  |  |  |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | (0.1) |  |  |  |  |  |  |
Balance in AOCI as of December 31, 2021 |  |  |  | $ | — |  |  |  |  |  |  |
|  |  |  | Cash Flow Hedge – |  |  |  |  |  |
For the Year Ended December 31, 2020 |  |  |  | Interest Rate |  |  |  |  |  |
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2019 |  |  |  | $ | 1.1 |  |  |  |  |  |  |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  |  |  |  |  |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | (1.3) |  |  |  |  |  |  |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | (1.3) |  |  |  |  |  |  |
Income Tax (Expense) Benefit |  |  |  | (0.3) |  |  |  |  |  |  |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | (1.0) |  |  |  |  |  |  |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | (1.0) |  |  |  |  |  |  |
Balance in AOCI as of December 31, 2020 |  |  |  | $ | 0.1 |  |  |  |  |  |  |
SWEPCo |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2022 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2021 |  |  |  | $ | 1.2 |  |  | $ | (4.4) |  |  | $ | 9.9 |  |  | $ | 6.7 |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | (9.2) |  |  | (9.2) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | (0.1) |  |  | — |  |  | — |  |  | (0.1) |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (2.0) |  |  | — |  |  | (2.0) |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | (0.1) |  |  | (2.0) |  |  | — |  |  | (2.1) |
Income Tax (Expense) Benefit |  |  |  | — |  |  | (0.4) |  |  | — |  |  | (0.4) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | (0.1) |  |  | (1.6) |  |  | — |  |  | (1.7) |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | (0.1) |  |  | (1.6) |  |  | (9.2) |  |  | (10.9) |
Balance in AOCI as of December 31, 2022 |  |  |  | $ | 1.1 |  |  | $ | (6.0) |  |  | $ | 0.7 |  |  | $ | (4.2) |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2021 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (0.3) |  |  | $ | (2.8) |  |  | $ | 5.0 |  |  | $ | 1.9 |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | 4.9 |  |  | 4.9 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 1.9 |  |  | — |  |  | — |  |  | 1.9 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (2.0) |  |  | — |  |  | (2.0) |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 1.9 |  |  | (2.0) |  |  | — |  |  | (0.1) |
Income Tax (Expense) Benefit |  |  |  | 0.4 |  |  | (0.4) |  |  | — |  |  | — |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.5 |  |  | (1.6) |  |  | — |  |  | (0.1) |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.5 |  |  | (1.6) |  |  | 4.9 |  |  | 4.8 |
Balance in AOCI as of December 31, 2021 |  |  |  | $ | 1.2 |  |  | $ | (4.4) |  |  | $ | 9.9 |  |  | $ | 6.7 |
|  |  |  |  |  | Pension and OPEB |  |
|  |  |  |  |  | Amortization |  | Changes in |  |
|  |  |  | Cash Flow Hedge – |  | of Deferred |  | Funded |  |
For the Year Ended December 31, 2020 |  |  |  | Interest Rate |  | Costs |  | Status |  | Total
|  |  |  | (in millions)
Balance in AOCI as of December 31, 2019 |  |  |  | $ | (1.8) |  |  | $ | (1.3) |  |  | $ | 1.8 |  |  | $ | (1.3) |
Change in Fair Value Recognized in AOCI, Net of Tax |  |  |  | — |  |  | — |  |  | 3.2 |  |  | 3.2 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |  |  |
Interest Expense (b) |  |  |  | 1.9 |  |  | — |  |  | — |  |  | 1.9 |
Amortization of Prior Service Cost (Credit) |  |  |  | — |  |  | (2.0) |  |  | — |  |  | (2.0) |
Amortization of Actuarial (Gains) Losses |  |  |  | — |  |  | 0.1 |  |  | — |  |  | 0.1 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  |  |  | 1.9 |  |  | (1.9) |  |  | — |  |  | — |
Income Tax (Expense) Benefit |  |  |  | 0.4 |  |  | (0.4) |  |  | — |  |  | — |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  |  |  | 1.5 |  |  | (1.5) |  |  | — |  |  | — |
Net Current Period Other Comprehensive Income (Loss) |  |  |  | 1.5 |  |  | (1.5) |  |  | 3.2 |  |  | 3.2 |
Balance in AOCI as of December 31, 2020 |  |  |  | $ | (0.3) |  |  | $ | (2.8) |  |  | $ | 5.0 |  |  | $ | 1.9 |
(a)The change in fair value includes $(10) million, $(7) million and $6 million for the years ended December 31, 2022, 2021 and 2020, respectively, related to AEP's investment in joint venture wind farms acquired as part of the purchase of Sempra Renewables LLC. (b)Amounts reclassified to the referenced line item on the statements of income.

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