XML 92 R81.htm IDEA: XBRL DOCUMENT v3.22.2.2
Retirement Plans - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Aug. 31, 2021
Defined Contribution Plan Disclosure [Line Items]            
Deferred compensation plan expense $ (4,576,000) $ 88,965,000 $ (21,873,000) $ 89,327,000    
Nonqualified Plan | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits            
Defined Contribution Plan Disclosure [Line Items]            
Deferred compensation plan income 4,576,000   21,873,000      
Deferred compensation plan expense   88,965,000   89,327,000    
DCP participant deferrals 1,586,000 527,000 4,694,000 2,020,000    
Contributions by employer 0 0 0 0    
Nonqualified Plan | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | DCP, One-Time Inducement            
Defined Contribution Plan Disclosure [Line Items]            
Reclassified cumulative compensation cost   4,739,000   4,739,000    
Deferred compensation plan expense 90,721,000 90,721,000 90,721,000 90,721,000    
Deferred compensation liability $ 95,460,000 $ 95,460,000 $ 95,460,000 $ 95,460,000    
Nonqualified Plan | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Class B Common Stock            
Defined Contribution Plan Disclosure [Line Items]            
Phantom shares, maximum elections (in shares)           1,500,000
Reduction in shares outstanding, diluted (in shares)           1,500,000
Reduction in shares outstanding, basic (in shares)           1,500,000
Phantom shares issuable (in shares) 21,535,748   21,535,748   25,384,449