Description of Business and Accounting Policies - Video and Music Content (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Weighted Average Life, Capitalized Video Content	2 years 8 months 12 days
Video and Music Content, Capitalized Costs	$ 5.8	$ 3.8
Video and Music Content, Expense	$ 7.8	$ 6.7