REAL ESTATE TRANSACTIONS - Additional Information (Detail) $ in Thousands		3 Months Ended				12 Months Ended
	Jul. 25, 2022 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2024 USD ($) Bed Facility	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 31, 2024 USD ($) Bed	Jan. 24, 2018 Bed
Facility Activations Developments And Closures [Line Items]
Asset Impairment Charges				$ 3,500		$ 3,108	$ 2,710	$ 4,392
Net proceeds from sale of assets						13,738	11,068	157,680
Net proceeds after the repayment of debt								27,300
Net gain (loss) on sale of properties								9,900
Operating Costs and Expenses						1,493,357	1,462,430	1,413,792
Assets held for sale						$ 0	7,480
Safety
Facility Activations Developments And Closures [Line Items]
Number of beds at the facility | Bed						62,000
Operating Costs and Expenses						$ 1,382,520	1,356,496	1,313,567
Community
Facility Activations Developments And Closures [Line Items]
Number of beds at the center | Bed						4,000
Operating Costs and Expenses						$ 96,932	91,895	86,016
Properties
Facility Activations Developments And Closures [Line Items]
Number of beds at the facility | Bed						10,000
Kansas Department Of Corrections
Facility Activations Developments And Closures [Line Items]
Number of beds at the facility | Bed										2,432
West Tennessee Detention Facility
Facility Activations Developments And Closures [Line Items]
Net carrying value						$ 17,632	18,568
Idled Correctional Facilities
Facility Activations Developments And Closures [Line Items]
Number of facility | Facility						9
Idled Non-Core Facilities | Safety
Facility Activations Developments And Closures [Line Items]
Net carrying value						$ 2,700
Number of beds at the facility | Bed						240
Number of facility | Facility						1
Idle Facilities
Facility Activations Developments And Closures [Line Items]
Operating Costs and Expenses						$ 17,400	12,200	$ 9,400
Idle Facilities | Community
Facility Activations Developments And Closures [Line Items]
Net carrying value						$ 1,100
Number of beds at the facility | Bed						60
Idle Facilities | West Tennessee Detention Facility
Facility Activations Developments And Closures [Line Items]
Operating Costs and Expenses					$ 3,500
Facilities in CoreCivic Community Segment
Facility Activations Developments And Closures [Line Items]
Net sales proceeds			$ 8,000			$ 1,900			$ 3,400
Net gain (loss) on sale of properties		$ 1,200	$ 500			$ 1,600
Facility In Oklahoma And Corecivic Community Segment
Facility Activations Developments And Closures [Line Items]
Company Owned Bed | Bed									390
South Texas Family Residential Center [Member]
Facility Activations Developments And Closures [Line Items]
Asset impairment charges		$ 3,100
Three Community Corrections Facilities And One Vacant Parcel Of Land
Facility Activations Developments And Closures [Line Items]
Net sales proceeds							10,800
Net gain (loss) on sale of properties							$ 800
Purchase And Sale Agreement [Member] | McRae Correctional Facility | Safety
Facility Activations Developments And Closures [Line Items]
Gross Sale Price	$ 130,000
Net proceeds from sale of assets	129,700
Net gain (loss) on sale of properties	$ 77,500