Quarterly report [Sections 13 or 15(d)]

Investment in Charter Accounted for Using the Equity Method - Class A common stock sold to Charter (Details)

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Investment in Charter Accounted for Using the Equity Method - Class A common stock sold to Charter (Details) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
Jul. 31, 2026
Jun. 30, 2026
Jun. 30, 2025
Investments in affiliates accounted for using the Equity Method      
Amount of Charter sold   $ 595 $ 600
Charter | Series A common stock      
Investments in affiliates accounted for using the Equity Method      
Number of Charter sold   2,807,590 1,634,261
Amount of Charter sold   $ 595 $ 600
Charter | Series A common stock | Subsequent event      
Investments in affiliates accounted for using the Equity Method      
Number of Charter sold 129,907    
Amount of Charter sold $ 18