Commitment, Contingencies And Guarantees: Unconditional Purchase Obligations (Details) $ in Millions |
Dec. 31, 2025
USD ($)
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|---|---|
| PPAs | |
| Unrecorded Unconditional Purchase Obligation [Line Items] | |
| 2026 | $ 1.7 |
| 2027 | 126.9 |
| 2028 | 33.6 |
| 2029 | 0.0 |
| 2030 | 0.0 |
| Thereafter | 0.0 |
| Total future commitments | 162.2 |
| Transmission Services Agreements | |
| Unrecorded Unconditional Purchase Obligation [Line Items] | |
| 2026 | 33.5 |
| 2027 | 44.8 |
| 2028 | 44.8 |
| 2029 | 44.8 |
| 2030 | 44.8 |
| Thereafter | 0.0 |
| Total future commitments | 212.7 |
| Natural gas supply, transportation and storage agreements | |
| Unrecorded Unconditional Purchase Obligation [Line Items] | |
| 2026 | 225.0 |
| 2027 | 200.9 |
| 2028 | 134.5 |
| 2029 | 39.9 |
| 2030 | 32.6 |
| Thereafter | 111.7 |
| Total future commitments | $ 744.6 |
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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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