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Equity - Activity for Class B Common Stock and Treasury Stock (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance (in shares) 11,215,316 20,307,504 10,229,521 16,094,488
Stock Award Activity (in shares) (5,000) 0 (387,996) (1,704,592)
Purchase of Treasury Stock (in shares) 2,046,790 211,885 3,415,581 6,129,493
Retirement of Treasury Stock (in shares) 0 (10,000,000) 0 (10,000,000)
Ending Balance (in shares) 13,257,106 10,519,389 13,257,106 10,519,389
Class B Shares        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance (in shares) 88,290,140 89,197,952 89,275,935 93,410,968
Stock Award Activity (in shares) 5,000 0 387,996 1,704,592
Purchase of Treasury Stock (in shares) (2,046,790) (211,885) (3,415,581) (6,129,493)
Ending Balance (in shares) 86,248,350 88,986,067 86,248,350 88,986,067
Purchase of Treasury Stock (in shares)     3,400,000