Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Taxes [Line Items]
Minimum Distribution Percentage of Taxable Income to Qualify for Real Estate Investment Trust	90.00%
Income tax expense (benefit)	$ 113,531,000	$ 3,776,000
Deferred employer side social security payments	29,600,000
Liabilities for uncertain tax positions	0		$ 0
Resulting From Revaluation Of Deferred Tax Liabilities
Income Taxes [Line Items]
Income tax expense (benefit)	114,200,000
Settlement Agreement, Incremental Expenses Directly Associated with COVID-19 and Asset Impairments
Income Taxes [Line Items]
Income tax expense (benefit)	$ (14,100,000)
Lansing Correctional Facility
Income Taxes [Line Items]
Income tax expense deferred during construction period		3,100,000
Lease expiration term	20 years
Deferred tax asset revalued upon conversion of TRS to QRS		$ 0