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Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) period	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jan. 01, 2022 USD ($)
Schedule of Significant Accounting Policies [Line Items]
Amortization period for capitalized contract costs	3 years
Beneficial interest, minimum interest in credit risk, percentage	5.00%
Option to extend lease	10 years
Option to extend existing lease	5 years
Impairment and restructuring costs	$ 56,828	$ 76,800	$ 0
Advertising costs	210,100	113,000	185,200
Technology and development	474,396	390,172	350,923
Additional paid-in capital	(7,001,084)	(5,880,883)
Accounting Standards Update 2020-06 Retrospective \| Cumulative Effect, Period of Adoption, Adjustment \| Subsequent Event
Schedule of Significant Accounting Policies [Line Items]
Additional paid-in capital				$ 492,500
Homes
Schedule of Significant Accounting Policies [Line Items]
Holding costs	62,300	11,300
Technology and development
Schedule of Significant Accounting Policies [Line Items]
Technology and development	$ 481,900	$ 383,100	$ 343,700
Purchased content
Schedule of Significant Accounting Policies [Line Items]
Useful life of capitalized purchased content asset	6 years
Minimum
Schedule of Significant Accounting Policies [Line Items]
Lessee, operating lease, remaining lease term	1 year
Number of renewal options \| period	1
Maximum
Schedule of Significant Accounting Policies [Line Items]
Lessee, operating lease, remaining lease term	11 years
Number of renewal options \| period	2
Computer equipment \| Minimum
Schedule of Significant Accounting Policies [Line Items]
Expected useful lives	2 years
Computer equipment \| Maximum
Schedule of Significant Accounting Policies [Line Items]
Expected useful lives	3 years
Office Equipment, Furniture, Fixtures \| Minimum
Schedule of Significant Accounting Policies [Line Items]
Expected useful lives	5 years
Office Equipment, Furniture, Fixtures \| Maximum
Schedule of Significant Accounting Policies [Line Items]
Expected useful lives	7 years
Software Development \| Minimum
Schedule of Significant Accounting Policies [Line Items]
Expected useful lives	1 year
Software Development \| Maximum
Schedule of Significant Accounting Policies [Line Items]
Expected useful lives	5 years