Balance Sheet Components - Components of Content Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 20,888,785		$ 20,112,140
Average produced content asset amortization percentage	90.00%
Average produced content asset amortization period	4 years
Amortization of streaming content assets	$ 2,124,686	$ 1,748,844
Licensed content, net
Finite-Lived Intangible Assets [Line Items]
Net content	14,297,658		14,081,463
Unamortized cost in year one	5,415,000
Unamortized cost in year two	3,691,000
Unamortized cost in year three	2,552,000
Amortization of streaming content assets	1,774,289	1,557,424
Produced content, net
Finite-Lived Intangible Assets [Line Items]
Net content	2,737,677		2,403,896
In production	3,494,467		3,305,126
In development and pre-production	348,515		311,842
Content assets, net	6,580,659		6,020,864
Unamortized cost in year one	935,000
Unamortized cost in year two	756,000
Unamortized cost in year three	559,000
Amortization of streaming content assets	350,397	$ 191,420
DVD, net
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 10,468		$ 9,813