INVESTMENT IN TRANSMISSION AFFILIATES - RECEIVABLES AND PAYABLES (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Investment in transmission affiliates
Accounts payable for services received from ATC	$ 740.7	$ 896.6
ATC
Investment in transmission affiliates
Accounts receivable for services provided to ATC	2.1	1.6
Accounts payable for services received from ATC	50.0	49.9
Amounts due from ATC for transmission infrastructure upgrade	$ 45.8	$ 46.1

Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

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