STOCKHOLDERS' EQUITY - At-The-Market Share Isuances (Details) - At-the-Market Offerings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AMC Preferred Equity Units
STOCKHOLDERS' EQUITY
Number of shares sold	7.1	20.8	24.2
Gross proceeds	$ 114.5	$ 228.8
Sales agents fees paid	2.9	5.7
Other third-party issuance costs	8.8	$ 5.5
Payment to issuance cost to third party	$ 11.7
Common Stock
STOCKHOLDERS' EQUITY
Number of shares sold	88.0		24.2
Gross proceeds	$ 675.5
Sales agents fees paid	16.9
Other third-party issuance costs	1.1
Payment to issuance cost to third party	0.9
Common Stock And AMC Preferred Equity Units
STOCKHOLDERS' EQUITY
Gross proceeds	790.0		$ 1,611.8
Sales agents fees paid	19.8		40.3
Other third-party issuance costs	9.9		$ 0.8
Payment to issuance cost to third party	$ 12.6