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BASIS OF PRESENTATION - Liquidity (Details) $ in Millions			3 Months Ended		6 Months Ended
BASIS OF PRESENTATION - Liquidity (Details) $ in Millions	Feb. 07, 2023 USD ($) shares	Dec. 22, 2022 USD ($) shares	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($)
BASIS OF PRESENTATION
Net proceeds from AMC Preferred Equity Units issuance					$ 175.7
Increase in stockholders' deficit			$ 32.7	$ 70.5
Amount of minimum liquidity requirements			$ 100.0		100.0
Accrued interest paid					$ 212.0	$ 178.7
Percentage of north american box office grosses					0.21
Second Lien Notes due 2026
BASIS OF PRESENTATION
Number of shares sold \| shares		91,026,191
Value of shares sold		$ 100.0
Cash interest rate (as a percent)		10.00%
PIK interest rate (as a percent)		12.00%
Aggregate principal amount	$ 100.0
Second Lien Notes due 2026
BASIS OF PRESENTATION
Cash interest rate (as a percent)	10.00%
PIK interest rate (as a percent)	12.00%
Increase in stockholders' deficit	$ 193.7
Aggregate principal amount	100.0
Accrued interest paid	1.4
AMC Preferred Equity Units
BASIS OF PRESENTATION
Net proceeds from AMC Preferred Equity Units issuance	$ 75.1			75.1
AMC Preferred Equity Units \| Second Lien Notes due 2026
BASIS OF PRESENTATION
Number of shares issued \| shares	197,621,297
AMC Preferred Equity Units \| Second Lien Notes due 2026
BASIS OF PRESENTATION
Number of shares issued \| shares	197,621,297
Forward purchase agreement
BASIS OF PRESENTATION
Number of shares sold \| shares		106,595,106
Value of shares sold		$ 75.1
Increase in stockholders' deficit				$ 193.7
At the Market Offerings
BASIS OF PRESENTATION
Number of shares issued \| shares					70,500,000
Other Third Party Stock Issuance Costs Incurred					$ 8.3
Gross proceeds					114.5
Sales agents fees paid					2.9
Payment to issuance cost to third party					$ 11.0