XML 70 R59.htm IDEA: XBRL DOCUMENT v3.21.1
The CARES Act - Additional Information (Detail) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Apr. 24, 2020
Aug. 31, 2020
Apr. 30, 2020
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2017
CARES Act [Line Items]                  
Received benefit in form of refunds and lower future tax payments             $ 51.6 $ 51.6  
Received benefit related to interest expense             22.8 22.8  
Received benefit related to qualified improvement property legislation             20.5 20.5  
Expected permanent cash benefit due to loss             $ 8.3 $ 8.3  
Effective income tax rate reconciliation at federal statutory income tax rate             21.00%   35.00%
CARES Act [Member]                  
CARES Act [Line Items]                  
Offer of eligible relief amount           $ 100,000.0      
Additional offer of eligible relief amount $ 75,000.0                
Net operating loss carryforwards and carrybacks offset percentage of taxable income       100.00%          
Net operating loss carried back period       5 years          
Cash benefit relating to delay of payment of social security payroll taxes             $ 39.0    
CARES Act [Member] | Medicare [Member]                  
CARES Act [Line Items]                  
Percentage of increase in medicare reimbursement rate           2.00%      
Expected repayment period     12 months            
Repayment of advanced payments period     2021-04            
CARES Act [Member] | Public Health and Social Services Emergency Fund [Member]                  
CARES Act [Line Items]                  
Receipt of CARES Act of 2020 aid amount           $ 19.7 $ 34.9    
Receipt of additional CARES Act of 2020 aid amount   $ 12.8              
Other income         $ 32.8        
CARES Act [Member] | CMS' Accelerated and Advance Payment Program [Member] | Medicare [Member]                  
CARES Act [Line Items]                  
Amount of advance payment received           $ 45.0