LONG-TERM OBLIGATIONS - Schedule of Letters of Credit Outstanding (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 119.8	$ 118.4
$400 Million Facility
Debt Instrument [Line Items]
Letters of credit outstanding, amount	0.0	0.0
$300 Million Facility
Debt Instrument [Line Items]
Letters of credit outstanding, amount	71.1	70.4
Bilateral Arrangements
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 48.7	$ 48.0