Business Segments and Geographic Information - Schedule of Operating and Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Revenues	$ 602,785	$ 616,683	$ 1,804,885	$ 1,756,045
Operating income from segments:
Operating income from segments	130,945	148,143	407,811	422,599
General and Administrative Expenses	(47,356)	(50,022)	(139,182)	(147,878)
Operating income	83,589	98,121	268,629	274,721
Operating Segments
Revenues:
Revenues	602,785	616,683	1,804,885	1,756,045
Operating income from segments:
Operating income from segments	130,945	148,143	407,811	422,599
Operating Segments | U.S. Secure Services
Revenues:
Revenues	385,007	368,493	1,123,507	1,073,140
Operating income from segments:
Operating income from segments	64,187	67,462	195,589	214,994
Operating Segments | Electronic Monitoring and Supervision Services
Revenues:
Revenues	94,489	137,039	335,158	346,444
Operating income from segments:
Operating income from segments	46,651	67,673	166,460	160,838
Operating Segments | Reentry Services
Revenues:
Revenues	71,375	65,406	203,192	192,557
Operating income from segments:
Operating income from segments	16,826	9,816	37,198	34,027
Operating Segments | International Services
Revenues:
Revenues	51,914	45,745	143,028	143,904
Operating income from segments:
Operating income from segments	3,281	3,192	8,564	12,740
Segment Reconciling Items
Operating income from segments:
General and Administrative Expenses	$ (47,356)	$ (50,022)	$ (139,182)	$ (147,878)