Accounting Policies and Supplemental Disclosures - Video and Music Content (Details) - USD ($) $ in Billions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Accounting Policies [Abstract]
Digital video and music content, capitalized costs	$ 19.8		$ 19.8		$ 17.4
Digital video and music content, expense	$ 5.0	$ 4.6	$ 14.2	$ 13.0