Accounting Policies and Supplemental Disclosures - Video and Music Content (Details) - USD ($) $ in Billions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Accounting Policies [Abstract]
Digital video and music content, capitalized costs	$ 14.5		$ 10.7
Digital video and music content, expense	$ 3.5	$ 3.0