CAPITAL CONSTRUCTION FUND (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Maximum period to commit fund deposits for qualified purposes	25 years
Period over which deposits will be treated as non-qualified withdrawals	5 years
Accounts receivable, net	$ 343.7	$ 253.4
Eligible Accounts Receivable Assigned to CCF
Accounts receivable, net	$ 9.8	$ 1.7

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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Balance Type:	debit
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