Accounting Policies and Supplemental Disclosures - Video and Music Content (Details) - USD ($) $ in Billions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Accounting Policies [Abstract]
Digital video and music content, capitalized costs	$ 15.2		$ 15.2		$ 10.7
Digital video and music content, expense	$ 3.7	$ 3.1	$ 7.3	$ 6.2