Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues [Abstract]
Revenue	$ 3,096	$ 2,748	$ 5,368	$ 4,890
Costs and expenses:
Cost of revenue	544	506	1,050	986
Operations and support	332	338	635	623
Product development	610	519	1,178	994
Sales and marketing	691	573	1,254	1,087
General and administrative	307	315	601	602
Total costs and expenses	2,484	2,251	4,718	4,292
Income from operations	612	497	650	598
Interest income	190	226	363	428
Other expense, net	(23)	(42)	(61)	(52)
Income before income taxes	779	681	952	974
Provision for income taxes	137	126	156	155
Net income	$ 642	$ 555	$ 796	$ 819
Net income per share attributable to Class A and Class B common stockholders:
Basic (in USD per share)	$ 1.04	$ 0.87	$ 1.29	$ 1.29
Diluted (in USD per share)	$ 1.03	$ 0.86	$ 1.27	$ 1.26
Weighted-average shares used in computing net income per share attributable to Class A and Class B common stockholders:
Basic (in shares)	615	635	618	636
Diluted (in shares)	626	649	629	651