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v3.24.3

Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2024
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
|  | Cash Flow Hedges |  | Pension |  |
Three Months Ended September 30, 2024 |  | Commodity |  | Interest Rate |  | and OPEB |  | Total
|  | (in millions)
Balance in AOCI as of June 30, 2024 |  | $ | 103.7 |  |  | $ | 9.3 |  |  | $ | (153.0) |  |  | $ | (40.0) |
Change in Fair Value Recognized in AOCI, Net of Tax |  | (28.8) |  |  | (24.5) |  |  | — |  |  | (53.3) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation (a) |  | 0.1 |  |  | — |  |  | — |  |  | 0.1 |
Interest Expense (a) |  | — |  |  | 8.8 |  |  | — |  |  | 8.8 |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  | (1.4) |  |  | (1.4) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  | 0.7 |  |  | 0.7 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | 0.1 |  |  | 8.8 |  |  | (0.7) |  |  | 8.2 |
Income Tax (Expense) Benefit |  | 0.1 |  |  | 1.8 |  |  | (0.1) |  |  | 1.8 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | — |  |  | 7.0 |  |  | (0.6) |  |  | 6.4 |
Net Current Period Other Comprehensive Loss |  | (28.8) |  |  | (17.5) |  |  | (0.6) |  |  | (46.9) |
Balance in AOCI as of September 30, 2024 |  | $ | 74.9 |  |  | $ | (8.2) |  |  | $ | (153.6) |  |  | $ | (86.9) |
|  | Cash Flow Hedges |  | Pension |  |
Three Months Ended September 30, 2023 |  | Commodity |  | Interest Rate |  | and OPEB |  | Total
|  | (in millions)
Balance in AOCI as of June 30, 2023 |  | $ | 93.5 |  |  | $ | 12.7 |  |  | $ | (142.6) |  |  | $ | (36.4) |
Change in Fair Value Recognized in AOCI, Net of Tax |  | 19.3 |  |  | (6.9) |  |  | — |  |  | 12.4 |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation (a) |  | (15.6) |  |  | — |  |  | — |  |  | (15.6) |
Interest Expense (a) |  | — |  |  | (1.3) |  |  | — |  |  | (1.3) |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  | (5.3) |  |  | (5.3) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  | 1.3 |  |  | 1.3 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | (15.6) |  |  | (1.3) |  |  | (4.0) |  |  | (20.9) |
Income Tax (Expense) Benefit |  | (3.4) |  |  | (0.2) |  |  | (0.8) |  |  | (4.4) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | (12.2) |  |  | (1.1) |  |  | (3.2) |  |  | (16.5) |
Net Current Period Other Comprehensive Income (Loss) |  | 7.1 |  |  | (8.0) |  |  | (3.2) |  |  | (4.1) |
Balance in AOCI as of September 30, 2023 |  | $ | 100.6 |  |  | $ | 4.7 |  |  | $ | (145.8) |  |  | $ | (40.5) |
|  | Cash Flow Hedges |  | Pension |  |
Nine Months Ended September 30, 2024 |  | Commodity |  | Interest Rate |  | and OPEB |  | Total
|  | (in millions)
Balance in AOCI as of December 31, 2023 |  | $ | 104.9 |  |  | $ | (8.1) |  |  | $ | (152.3) |  |  | $ | (55.5) |
Change in Fair Value Recognized in AOCI, Net of Tax |  | (16.3) |  |  | (5.2) |  |  | — |  |  | (21.5) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation (a) |  | (17.4) |  |  | — |  |  | — |  |  | (17.4) |
Interest Expense (a) |  | — |  |  | 6.5 |  |  | — |  |  | 6.5 |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  | (4.0) |  |  | (4.0) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  | 2.4 |  |  | 2.4 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | (17.4) |  |  | 6.5 |  |  | (1.6) |  |  | (12.5) |
Income Tax (Expense) Benefit |  | (3.7) |  |  | 1.4 |  |  | (0.3) |  |  | (2.6) |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | (13.7) |  |  | 5.1 |  |  | (1.3) |  |  | (9.9) |
Net Current Period Other Comprehensive Loss |  | (30.0) |  |  | (0.1) |  |  | (1.3) |  |  | (31.4) |
Balance in AOCI as of September 30, 2024 |  | $ | 74.9 |  |  | $ | (8.2) |  |  | $ | (153.6) |  |  | $ | (86.9) |
|  | Cash Flow Hedges |  | Pension |  |
Nine Months Ended September 30, 2023 |  | Commodity |  | Interest Rate |  | and OPEB |  | Total
|  | (in millions)
Balance in AOCI as of December 31, 2022 |  | $ | 223.5 |  |  | $ | 0.3 |  |  | $ | (140.1) |  |  | $ | 83.7 |
Change in Fair Value Recognized in AOCI, Net of Tax |  | (170.1) |  |  | 5.3 |  |  | (12.9) |  |  | (177.7) |
Amount of (Gain) Loss Reclassified from AOCI |  |  |  |  |  |  |  |
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation (a) |  | 59.7 |  |  | — |  |  | — |  |  | 59.7 |
Interest Expense (a) |  | — |  |  | (1.1) |  |  | — |  |  | (1.1) |
Amortization of Prior Service Cost (Credit) |  | — |  |  | — |  |  | (15.9) |  |  | (15.9) |
Amortization of Actuarial (Gains) Losses |  | — |  |  | — |  |  | 3.9 |  |  | 3.9 |
Reclassifications from AOCI, before Income Tax (Expense) Benefit |  | 59.7 |  |  | (1.1) |  |  | (12.0) |  |  | 46.6 |
Income Tax (Expense) Benefit |  | 12.5 |  |  | (0.2) |  |  | (2.5) |  |  | 9.8 |
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit |  | 47.2 |  |  | (0.9) |  |  | (9.5) |  |  | 36.8 |
Reclassifications of KPCo Pension and OPEB Regulatory Assets from AOCI, before Income Tax (Expense) Benefit |  | — |  |  | — |  |  | 21.1 |  |  | 21.1 |
Income Tax (Expense) Benefit |  | — |  |  | — |  |  | 4.4 |  |  | 4.4 |
Reclassifications of KPCo Pension and OPEB Regulatory Assets from AOCI, Net of Income Tax (Expense) Benefit |  | — |  |  | — |  |  | 16.7 |  |  | 16.7 |
Net Current Period Other Comprehensive Income (Loss) |  | (122.9) |  |  | 4.4 |  |  | (5.7) |  |  | (124.2) |
Balance in AOCI as of September 30, 2023 |  | $ | 100.6 |  |  | $ | 4.7 |  |  | $ | (145.8) |  |  | $ | (40.5) |
(a)Amounts reclassified to the referenced line item on the statements of income.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
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