Balance Sheet Components - Components of Content Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Content assets, net	$ 27,291,640		$ 27,291,640		$ 25,383,950
Amortization of content assets	2,806,803	$ 2,607,159	5,525,999	$ 5,090,544
Licensed content, net
Finite-Lived Intangible Assets [Line Items]
Net content	13,111,259		13,111,259		13,747,607
Unamortized cost in year one	5,692,000		5,692,000
Unamortized cost in year two	3,209,000		3,209,000
Unamortized cost in year three	1,904,000		1,904,000
Amortization of content assets	1,884,638	1,883,070	3,713,884	3,743,240
Produced content, net
Finite-Lived Intangible Assets [Line Items]
Net content	5,847,391		5,847,391		5,809,681
In production	7,348,810		7,348,810		4,827,455
In development and pre-production	984,180		984,180		999,207
Content assets, net	14,180,381		14,180,381		$ 11,636,343
Unamortized cost in year one	2,233,000		2,233,000
Unamortized cost in year two	1,684,000		1,684,000
Unamortized cost in year three	1,026,000		1,026,000
Amortization of content assets	$ 922,165	$ 724,089	$ 1,812,115	$ 1,347,304