CONDENSED CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net revenues	$ 2,374	$ 2,413
Cost of net revenues	526	539
Gross profit	1,848	1,874
Operating expenses:
Sales and marketing	607	647
Product development	267	272
General and administrative	234	284
Provision for transaction losses	102	67
Amortization of acquired intangible assets	9	11
Total operating expenses	1,219	1,281
Income from operations	629	593
Interest and other, net	2	64
Income from continuing operations before income taxes	631	657
Income tax provision	(146)	(141)
Income from continuing operations	485	516
Income from discontinued operations, net of income taxes	2,927	2
Net income	$ 3,412	$ 518
Income per share - basic:
Continuing operations (in usd per share)	$ 0.64	$ 0.58
Discontinued operations (in usd per share)	3.89	0
Net income per share - basic (in usd per share)	4.53	0.58
Income per share - diluted:
Continuing operations (in usd per share)	0.64	0.57
Discontinued operations (in usd per share)	3.87	0
Net income per share - diluted (in usd per share)	$ 4.51	$ 0.57
Weighted-average shares:
Basic (in shares)	753	900
Diluted (in shares)	757	908