Balance Sheet Components - Components of Content Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 25,383,950	$ 24,504,567
Amortization of content assets	10,806,912	9,216,247	$ 7,532,088
Licensed content, net
Finite-Lived Intangible Assets [Line Items]
Net content	13,747,607	14,703,352
Unamortized cost in year one	5,637,000
Unamortized cost in year two	3,494,000
Unamortized cost in year three	2,134,000
Amortization of content assets	7,544,631	7,242,799	6,511,689
Produced content, net
Finite-Lived Intangible Assets [Line Items]
Net content	5,809,681	4,382,685
In production	4,827,455	4,750,664
In development and pre-production	999,207	667,866
Content assets, net	11,636,343	9,801,215
Unamortized cost in year one	2,183,000
Unamortized cost in year two	1,629,000
Unamortized cost in year three	1,092,000
Amortization of content assets	$ 3,262,281	$ 1,973,448	$ 1,020,399