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Accounting Policies and Supplemental Disclosures - Video and Music Content (Details) - USD ($)
$ in Billions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Accounting Policies [Abstract]          
Digital video and music content, capitalized costs $ 18.4   $ 18.4   $ 17.4
Digital video and music content, expense $ 4.6 $ 4.4 $ 9.2 $ 8.4