Accounting Policies and Supplemental Disclosures - Video and Music Content (Details) - USD ($) $ in Billions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounting Policies [Abstract]
Digital video and music content, capitalized costs	$ 18.0		$ 18.0		$ 16.7
Weighted average remaining life of capitalized video content			3 years 7 months 6 days
Digital video and music content, expense	$ 4.6	$ 4.2	$ 13.0	$ 11.4