Balance Sheet Components - Components of Content Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 23,234,994		$ 23,234,994		$ 20,112,140
Average produced content asset amortization percentage			90.00%
Average produced content asset amortization period			4 years
Amortization of streaming content assets	2,279,977	$ 1,911,767	$ 6,636,578	$ 5,478,428
Licensed content, net
Finite-Lived Intangible Assets [Line Items]
Net content	14,581,407		14,581,407		14,081,463
Unamortized cost in year one	5,666,000		5,666,000
Unamortized cost in year two	3,713,000		3,713,000
Unamortized cost in year three	2,546,000		2,546,000
Amortization of streaming content assets	1,810,757	1,671,516	5,382,225	4,810,476
Produced content, net
Finite-Lived Intangible Assets [Line Items]
Net content	3,646,870		3,646,870		2,403,896
In production	4,411,581		4,411,581		3,305,126
In development and pre-production	587,914		587,914		311,842
Content assets, net	8,646,365		8,646,365		6,020,864
Unamortized cost in year one	1,264,000		1,264,000
Unamortized cost in year two	997,000		997,000
Unamortized cost in year three	737,000		737,000
Amortization of streaming content assets	469,220	$ 240,251	1,254,353	$ 667,952
DVD, net
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 7,222		$ 7,222		$ 9,813