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Commitments and Contingencies - Unrecorded Unconditional Purchase Obligations Disclosure (Details) $ in Millions | Dec. 31, 2022 USD ($)
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Loss Contingencies [Line Items] |
Purchase Obligation, Due in Next Twelve Months | $ 168.7
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 163.3
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 126.1
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 99.0
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 106.1
Unrecorded Unconditional Purchase Obligation, Total | 663.2
OG&E minimum fuel purchase commitments [Member] |
Loss Contingencies [Line Items] |
Purchase Obligation, Due in Next Twelve Months | 110.0
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 92.2
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 66.4
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 24.6
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 24.6
Unrecorded Unconditional Purchase Obligation, Total | 317.8
OG&E expected wind purchase commitments [Member] |
Loss Contingencies [Line Items] |
Purchase Obligation, Due in Next Twelve Months | 56.0
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 56.6
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 56.9
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 57.3
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 57.7
Unrecorded Unconditional Purchase Obligation, Total | 284.5
OG&E long-term service agreement commitments [Member] |
Loss Contingencies [Line Items] |
Purchase Obligation, Due in Next Twelve Months | 2.7
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 14.5
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 2.8
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 17.1
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 23.8
Unrecorded Unconditional Purchase Obligation, Total | $ 60.9

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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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