v3.24.0.1
Summary of Significant Accounting Policies (Narrative) (Details)
 12 Months Ended
Dec. 31, 2023
USD ($)
customer
vote
shares
Dec. 31, 2022
USD ($)
customer
shares
Dec. 31, 2021
USD ($)
shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Advertising costs $ 241,500,000 $ 379,000,000 $ 383,000,000
Foreign currency transaction gains (losses) $ 8,400,000 $ (1,200,000) $ 12,200,000
Threshold period for write-off of capitalized development costs 3 years    
Antidilutive securities excluded from EPS | shares 500,000 800,000 400,000
Repurchase amount (up to) $ 1,500,000,000    
Available for repurchase under program $ 135,300,000    
Accounts Receivable | Customer Concentration Risk      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Number of customers | customer 1 2  
Accounts Receivable | Customer Concentration Risk | Customer One      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Concentration risk, percentage 15.00% 14.00%  
Accounts Receivable | Customer Concentration Risk | Customer Two      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Concentration risk, percentage   12.00%  
Class A  Common Stock      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Common stock, voting rights | vote 1    
Common stock, conversion ratio 1    
Stockholders entitled election of Board of Directors 25.00%    
Share repurchases | shares 0 0  
Class B  Common Stock      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Common stock, voting rights | vote 10    
Common stock, conversion ratio 1    
Maximum      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Period of related affiliation arrangement (up to) 6 years    
Prepaid expenses and other current assets      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Income tax receivable, program rights $ 230,300,000 $ 143,100,000  
Other Noncurrent Assets      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Income tax receivable, program rights $ 49,900,000 $ 104,500,000  
2011 Non-Employee Director Plan | Restricted stock units      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Vesting percentage 100.00%