Description of business, basis of presentation and summary of significant accounting policies - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 3,279,245	$ 2,991,093	$ 2,937,780
Subscription
Disaggregation of Revenue [Line Items]
Total revenues	1,530,402	1,466,433	1,286,611
Advertising & Marketing Services
Disaggregation of Revenue [Line Items]
Total revenues	1,363,417	1,428,082	1,174,774
Political
Disaggregation of Revenue [Line Items]
Total revenues	341,110	60,573	445,535
Other
Disaggregation of Revenue [Line Items]
Total revenues	$ 44,316	$ 36,005	$ 30,860