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v3.22.1

Long-Term Debt (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 USD ($)
Debt Instrument [Line Items] |
Percent of Principal Amount Subject to Optional Tender | 100.00%
Garfield Industrial Authority Bond [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Maturity Date | Jan. 01, 2025
Muskogee Industrial Authority Bond Due 2025 [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Maturity Date | Jan. 01, 2025
Muskogee Industrial Authority Bond Due 2027 [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Maturity Date | Jun. 01, 2027
Redeemable during the next 12 months |
Debt Instrument [Line Items] |
Long-term Debt | $ 135.4
OG&E [Member] | Redeemable during the next 12 months | Garfield Industrial Authority Bond [Member] |
Debt Instrument [Line Items] |
Long term debt | 47.0
OG&E [Member] | Redeemable during the next 12 months | Muskogee Industrial Authority Bond Due 2025 [Member] |
Debt Instrument [Line Items] |
Long term debt | 32.4
OG&E [Member] | Redeemable during the next 12 months | Muskogee Industrial Authority Bond Due 2027 [Member] |
Debt Instrument [Line Items] |
Long term debt | $ 56.0
Minimum [Member] | Redeemable during the next 12 months | Garfield Industrial Authority Bond [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 0.11%
Minimum [Member] | Redeemable during the next 12 months | Muskogee Industrial Authority Bond Due 2025 [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 0.11%
Minimum [Member] | Redeemable during the next 12 months | Muskogee Industrial Authority Bond Due 2027 [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 0.11%
Maximum [Member] | Redeemable during the next 12 months | Garfield Industrial Authority Bond [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 0.64%
Maximum [Member] | Redeemable during the next 12 months | Muskogee Industrial Authority Bond Due 2025 [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 0.57%
Maximum [Member] | Redeemable during the next 12 months | Muskogee Industrial Authority Bond Due 2027 [Member] |
Debt Instrument [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 0.64%

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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