CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net revenues	$ 10,271	$ 8,636	$ 8,650
Cost of net revenues	2,473	2,136	2,023
Gross profit	7,798	6,500	6,627
Operating expenses:
Sales and marketing	2,639	2,368	2,576
Product development	1,087	976	1,051
General and administrative	1,003	1,005	979
Provision for transaction losses	331	262	247
Amortization of acquired intangible assets	27	28	22
Total operating expenses	5,087	4,639	4,875
Income from operations	2,711	1,861	1,752
Interest and other, net	709	(112)	497
Income from continuing operations before income taxes	3,420	1,749	2,249
Income tax provision	(878)	(233)	(121)
Income from continuing operations	2,542	1,516	2,128
Income from discontinued operations, net of income taxes	3,125	270	402
Net income	$ 5,667	$ 1,786	$ 2,530
Income per share - basic:
Continuing operations (in usd per share)	$ 3.58	$ 1.79	$ 2.17
Discontinued operations (in usd per share)	4.40	0.31	0.41
Net income per share - basic (in usd per share)	7.98	2.10	2.58
Income per share - diluted:
Continuing operations (in usd per share)	3.54	1.77	2.15
Discontinued operations (in usd per share)	4.35	0.32	0.40
Net income per share - diluted (in usd per share)	$ 7.89	$ 2.09	$ 2.55
Weighted average shares:
Basic (in shares)	710	849	980
Diluted (in shares)	718	856	991