Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	$ 5,101,334	$ 4,644,705	$ 15,255,841	$ 13,329,679
Total segment adjusted EBITDA	194,919	(207,434)	170,219	(462,547)
Reconciling items:
Equity-based compensation	(63,075)	(56,138)	(191,584)	(193,450)
Interest expense	(6,485)	(7,376)	(19,996)	(38,047)
Interest income	15,403	2,603	26,301	5,450
Other income (expense), net	11,224	(4,026)	2,485	(7,479)
Income (loss) before income taxes	97,562	(323,911)	(186,638)	(1,137,440)
Operating segments | Product Commerce
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	4,947,174	4,481,525	14,760,758	12,911,901
Total segment adjusted EBITDA	239,222	(118,235)	339,939	(235,397)
Operating segments | Developing Offerings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	154,160	163,180	495,083	417,778
Total segment adjusted EBITDA	(44,303)	(89,199)	(169,720)	(227,150)
Segment reconciling items
Reconciling items:
Depreciation and amortization	(54,424)	(51,540)	(174,063)	(145,866)
Equity-based compensation	(63,075)	(56,138)	(191,584)	(193,450)
Interest expense	(6,485)	(7,376)	(19,996)	(38,047)
Interest income	15,403	2,603	26,301	5,450
Other income (expense), net	11,224	(4,026)	2,485	(7,479)
Fulfillment center fire losses	$ 0	$ 0	$ 0	$ (295,501)