XML 41 R33.htm IDEA: XBRL DOCUMENT
v3.24.3

Other Comprehensive Income (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2024
Statement of Comprehensive Income [Abstract] |
Reclassification out of Accumulated Other Comprehensive Income | The following table details reclassifications out of AOCI and into Net income. The amounts in parentheses below indicate decreases to Net income in the Consolidated Statements of Income for the period, net of tax:
|  | Amount Reclassified from AOCI |  | Amount Reclassified from AOCI |
| Location on the Consolidated Statements of Income | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2024 |  | 2023 |  | 2024 |  | 2023 |
|  | (in millions) |
Gains and (losses) on cash flow hedges: |  |  |  |  |  |  |  |  |
Interest rate swaps | Interest expense | $ | (0.8 | ) | $ | (0.7 | ) | $ | (2.2 | ) | $ | (2.1 | )
Commodity contracts | Fuel, purchased power, and cost of natural gas sold |  | - |  |  | - |  |  | (3.2 | ) |  | (2.5 | )
|  | $ | (0.8 | ) | $ | (0.7 | ) | $ | (5.4 | ) | $ | (4.6 | )
Income tax | Income tax expense |  | 0.2 |  |  | 0.1 |  |  | 1.2 |  |  | 1.1 |
Total reclassification adjustments related to cash flow hedges, net of tax |  | $ | (0.6 | ) | $ | (0.6 | ) | $ | (4.2 | ) | $ | (3.5 | )
Amortization of components of defined benefit plans: |  |  |  |  |  |  |  |  |
Actuarial (loss) | Operations and maintenance |  | - |  |  | - |  |  | (0.1 | ) |  | (0.1 | )
|  | $ | - |  | $ | - |  | $ | (0.1 | ) | $ | (0.1 | )
Income tax | Income tax expense |  | - |  |  | - |  |  | - |  |  | - |
Total reclassification adjustments related to defined benefit plans, net of tax |  | $ | - |  | $ | - |  | $ | (0.1 | ) | $ | (0.1 | )
Total reclassifications |  | $ | (0.6 | ) | $ | (0.6 | ) | $ | (4.3 | ) | $ | (3.6 | )
Schedule of Accumulated Other Comprehensive Income (Loss) | Balances by classification included within AOCI, net of tax on the accompanying Consolidated Balance Sheets were as follows:
| Derivatives Designated as Cash Flow Hedges |  |  |  |  |
| Interest Rate Swaps |  | Commodity Derivatives |  | Employee Benefit Plans |  | Total |
| (in millions) |
As of December 31, 2023 | $ | (6.1 | ) | $ | (2.5 | ) | $ | (6.2 | ) | $ | (14.8 | )
Other comprehensive income (loss) before reclassifications |  | - |  |  | (0.1 | ) |  | - |  |  | (0.1 | )
Amounts reclassified from AOCI |  | 1.7 |  |  | 2.5 |  |  | 0.1 |  |  | 4.3 |
As of September 30, 2024 | $ | (4.4 | ) | $ | (0.1 | ) | $ | (6.1 | ) | $ | (10.6 | )
| Derivatives Designated as Cash Flow Hedges |  |  |  |  |
| Interest Rate Swaps |  | Commodity Derivatives |  | Employee Benefit Plans |  | Total |
| (in millions) |
As of December 31, 2022 | $ | (8.3 | ) | $ | (1.2 | ) | $ | (6.1 | ) | $ | (15.6 | )
Other comprehensive income (loss) before reclassifications |  | - |  |  | (0.9 | ) |  | - |  |  | (0.9 | )
Amounts reclassified from AOCI |  | 1.7 |  |  | 1.8 |  |  | 0.1 |  |  | 3.6 |
As of September 30, 2023 | $ | (6.6 | ) | $ | (0.3 | ) | $ | (6.0 | ) | $ | (12.9 | )

X
- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
Name: | us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration