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v3.22.2

Significant Segment Financial Data (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | $ 98.9 | $ 96.6 | $ 291.5 | $ 235.4 |
Segment Profit (Loss) | 4.9 | 2.7 | 26.4 | 21.6 |
Identifiable Segment Assets | 1,547.1 | 1,477.1 | 1,547.1 | 1,477.1 | $ 1,540.3
Capital Expenditures | 29.9 | 28.4 | 45.3 | 42.5 |
Billed and Unbilled Revenue |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | 113.7 | 96.3 | 312.1 | 255.3 |
Rate Adjustment Mechanism Revenue |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | (14.8) | 0.3 | (20.6) | (19.9) |
Gas Segment |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | 44.6 | 40.0 | 148.0 | 118.7 |
Segment Profit (Loss) | 1.3 | (0.2) | 19.8 | 16.2 |
Identifiable Segment Assets | 936.0 | 878.3 | 936.0 | 878.3 |
Capital Expenditures | 22.0 | 18.9 | 31.0 | 23.2 |
Gas Segment | Billed and Unbilled Revenue |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | 49.6 | 38.0 | 163.3 | 131.2 |
Gas Segment | Rate Adjustment Mechanism Revenue |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | (5.0) | 2.0 | (15.3) | (12.5) |
Electric |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | 54.3 | 56.6 | 143.5 | 116.7 |
Segment Profit (Loss) | 3.9 | 3.4 | 7.3 | 6.3 |
Identifiable Segment Assets | 593.0 | 577.3 | 593.0 | 577.3 |
Capital Expenditures | 7.9 | 9.2 | 14.2 | 18.7 |
Electric | Billed and Unbilled Revenue |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | 64.1 | 58.3 | 148.8 | 124.1 |
Electric | Rate Adjustment Mechanism Revenue |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Total Operating Revenues | (9.8) | (1.7) | (5.3) | (7.4) |
All Other Segments |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Segment Profit (Loss) | (0.3) | (0.6) | (0.7) | (1.0) |
Identifiable Segment Assets | 18.1 | 21.5 | 18.1 | 21.5 |
Capital Expenditures | 0.0 | $ 0.3 | $ 0.1 | 0.6 |
Non- Regulated Operation |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Segment Profit (Loss) | $ 0.1 |  |  | $ 0.1 |

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