Commitments and Contingencies - Streaming Content (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Contractual Obligation [Line Items]
Total streaming content obligations	$ 19,072,254	$ 19,490,082
Current content liabilities	4,599,654	4,413,561
Non-current content liabilities	2,926,574	3,334,323
Streaming obligations not reflected on Consolidated Balance Sheets	11,600,000	11,800,000
Current content liabilities
Contractual Obligation [Line Items]
Current content liabilities	4,600,000	4,400,000
Non-current content liabilities
Contractual Obligation [Line Items]
Non-current content liabilities	$ 2,900,000	$ 3,300,000