Commitments and Contingencies - Streaming Content (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Contractual Obligation [Line Items]
Total streaming content obligations	$ 21,863,144	$ 19,218,830
Current content liabilities	4,197,874	4,429,536
Non-current content liabilities	2,265,286	2,618,084
Streaming obligations not reflected on Consolidated Balance Sheets	15,400,000	12,200,000
Current content liabilities
Contractual Obligation [Line Items]
Current content liabilities	4,200,000	4,400,000
Non-current content liabilities
Contractual Obligation [Line Items]
Non-current content liabilities	$ 2,300,000	$ 2,600,000