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Related Party Disclosures | 6 Months Ended
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Jun. 30, 2021
Related Party Transactions [Abstract] |
Related Party Transactions Disclosure | Related Party Transactions OGE Energy charges operating costs to OG&E and Enable based on several factors, and operating costs directly related to OG&E and/or Enable are assigned as such. Operating costs incurred for the benefit of OG&E are allocated either as overhead based primarily on labor costs or using the "Distrigas" method, which is a three-factor formula that uses an equal weighting of payroll, net operating revenues and gross property, plant and equipment. OGE Energy and OG&E OGE Energy charged operating costs to OG&E of $33.4 million and $36.9 million during the three months ended June 30, 2021 and 2020, respectively, and $69.1 million and $74.8 million during the six months ended June 30, 2021 and 2020, respectively. OGE Energy and Enable OGE Energy and Enable are currently parties to several agreements whereby OGE Energy provides specified support services to Enable, such as certain information technology, payroll and benefits administration. Under these agreements, OGE Energy charged operating costs to Enable of $0.1 million during both the three months ended June 30, 2021 and 2020 and $0.2 million during both the six months ended June 30, 2021 and 2020. Pursuant to a seconding agreement, OGE Energy provides seconded employees to Enable to support Enable's operations. As of June 30, 2021, 67 employees that participate in OGE Energy's defined benefit and retirement plans are seconded to Enable. OGE Energy billed Enable for reimbursement of $2.5 million and $3.8 million during the three months ended June 30, 2021 and 2020, respectively, and $7.8 million and $10.1 million during the six months ended June 30, 2021 and 2020, respectively, under the seconding agreement for employment costs. If the seconding agreement were terminated, and those employees were no longer employed by OGE Energy, and lump sum payments were made to those employees, OGE Energy would recognize a settlement or curtailment of the pension/retiree health care charges, which would increase expense at OGE Energy by $18.1 million. Settlement and curtailment charges associated with the Enable seconded employees are not reimbursable to OGE Energy by Enable. The seconding agreement can be terminated by mutual agreement of OGE Energy and Enable or solely by OGE Energy upon 120 days' notice. OGE Energy had accounts receivable from Enable for amounts billed for support services, including the cost of seconded employees, of $1.1 million as of June 30, 2021 and $2.0 million as of December 31, 2020, which are included in Accounts Receivable in OGE Energy's condensed balance sheets. Assuming the pending merger between Enable and Energy Transfer is completed, these agreements between OGE Energy and Enable, pursuant to which OGE Energy provides support services and seconded employees, will be terminated. OG&E and Enable Enable provides gas transportation services to OG&E pursuant to agreements that grant Enable the responsibility of delivering natural gas to OG&E's generating facilities and performing an imbalance service. With this imbalance service, in accordance with the cash-out provision of the contract, OG&E compensates Enable when Enable's deliveries exceed OG&E's pipeline nominations. Enable compensates OG&E when OG&E's pipeline nominations exceed Enable's deliveries. The following table presents summarized related party transactions between OG&E and Enable during the three and six months ended June 30, 2021 and 2020.
| Three Months Ended | Six Months Ended
| June 30, | June 30,
(In millions) | 2021 | 2020 | 2021 | 2020
Operating revenues: |  |  |  |
Electricity to power electric compression assets | $ | 3.3 |  | $ | 3.5 |  | $ | 5.9 |  | $ | 7.2 |
Fuel, purchased power and direct transmission expense: |  |  |  |
Natural gas transportation services | $ | 9.3 |  | $ | 9.4 |  | $ | 14.0 |  | $ | 14.1 |
Natural gas purchases (sales) | $ | (8.4) |  | $ | (1.7) |  | $ | (20.6) |  | $ | (1.0) |

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 + Details
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