Balance Sheet Components - Components of Content Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 21,945,740		$ 21,945,740		$ 20,112,140
Average produced content asset amortization percentage			90.00%
Average produced content asset amortization period			4 years
Amortization of streaming content assets	2,231,915	$ 1,817,817	$ 4,356,601	$ 3,566,661
Licensed content, net
Finite-Lived Intangible Assets [Line Items]
Net content	14,597,283		14,597,283		14,081,463
Unamortized cost in year one	5,604,000		5,604,000
Unamortized cost in year two	3,721,000		3,721,000
Unamortized cost in year three	2,570,000		2,570,000
Amortization of streaming content assets	1,797,179	1,581,536	3,571,468	3,138,960
Produced content, net
Finite-Lived Intangible Assets [Line Items]
Net content	3,117,549		3,117,549		2,403,896
In production	3,743,893		3,743,893		3,305,126
In development and pre-production	479,120		479,120		311,842
Content assets, net	7,340,562		7,340,562		6,020,864
Unamortized cost in year one	1,066,000		1,066,000
Unamortized cost in year two	864,000		864,000
Unamortized cost in year three	631,000		631,000
Amortization of streaming content assets	434,736	$ 236,281	785,133	$ 427,701
DVD, net
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 7,895		$ 7,895		$ 9,813