Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	$ 9,267	$ 7,866	$ 25,699	$ 22,303
Total cost of sales	6,547	5,597	18,102	15,963
Total gross profit	2,720	2,269	7,597	6,340
Total other segment items	2,307	1,926	6,374	5,386
Total segment adjusted EBITDA	413	343	1,223	954
Reconciliations of segment profit or loss
Total gross profit	2,720	2,269	7,597	6,340
Operating, general and administrative	(2,558)	(2,160)	(7,132)	(6,216)
Total segment adjusted EBITDA	413	343	1,223	954
Interest expense	(22)	(36)	(70)	(100)
Interest income	52	55	152	163
Other (expense) income, net	(27)	4	28	7
Income before income taxes	165	132	575	194
Operating segments | Product Commerce
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	7,980	6,891	22,184	19,816
Total cost of sales	5,416	4,823	15,079	13,962
Total gross profit	2,564	2,068	7,105	5,854
Total other segment items	1,859	1,598	5,187	4,387
Total segment adjusted EBITDA	705	470	1,918	1,467
Reconciliations of segment profit or loss
Total gross profit	2,564	2,068	7,105	5,854
Total segment adjusted EBITDA	705	470	1,918	1,467
Operating segments | Developing Offerings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	1,287	975	3,515	2,487
Total cost of sales	1,131	774	3,023	2,001
Total gross profit	156	201	492	486
Total other segment items	448	328	1,187	999
Total segment adjusted EBITDA	(292)	(127)	(695)	(513)
Reconciliations of segment profit or loss
Total gross profit	156	201	492	486
Total segment adjusted EBITDA	(292)	(127)	(695)	(513)
Segment reconciling items
Reconciliations of segment profit or loss
Operating, general and administrative	(2,558)	(2,160)	(7,132)	(6,216)
Depreciation and amortization	(133)	(112)	(381)	(313)
Equity-based compensation	(118)	(114)	(352)	(311)
Acquisition and restructuring related losses, net	0	(8)	(25)	(85)
KFTC administrative fine	0	0	0	(121)
Interest expense	(22)	(36)	(70)	(100)
Interest income	52	55	152	163
Other (expense) income, net	$ (27)	$ 4	$ 28	$ 7