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INVESTMENT IN TRANSMISSION AFFILIATES - RELATED PARTY TRANSACTIONS (Details) - ATC - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Investment in transmission affiliates |  |  |  |
Charges to ATC for services and construction | $ 3.9 | $ 5.5 | $ 14.8 | $ 17.2
Charges from ATC for network transmission services | $ 90.9 | $ 81.6 | $ 272.8 | $ 263.3

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- Definition Charges to related parties for services, construction, and/or operations (excluding transactions that are eliminated in consolidated or combined financial statements) during the period. + References No definition available. + Details
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- Details
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