Segment Information - Capital Expenditure by Segment (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
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| Segment Reporting [Line Items] | ||||
| Consolidated capital expenditures | $ 27,913 | $ 20,800 | $ 48,147 | $ 45,162 |
| Operating Segments | U.S. Gas | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated capital expenditures | 17,112 | 7,915 | 22,856 | 18,103 |
| Operating Segments | Canadian Operations | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated capital expenditures | 1,267 | 162 | 3,582 | 784 |
| Operating Segments | Union Electric | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated capital expenditures | 7,027 | 4,011 | 16,828 | 7,716 |
| Operating Segments | Non-Union Electric | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated capital expenditures | 2,448 | 8,702 | 4,567 | 18,547 |
| Other | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated capital expenditures | $ 59 | $ 10 | $ 314 | $ 12 |
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- Definition Amount of expenditure for addition to long-lived asset included in determination of segment asset by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Long-lived asset excludes financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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