CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net revenues	$ 10,800	$ 10,746	$ 9,927
Cost of net revenues	2,508	2,382	2,221
Gross profit	8,292	8,364	7,706
Operating expenses:
Sales and marketing	3,194	3,391	2,878
Product development	1,240	1,285	1,224
General and administrative	1,189	1,131	1,030
Provision for transaction losses	300	286	272
Amortization of acquired intangible assets	48	49	38
Total operating expenses	5,971	6,142	5,442
Income from operations	2,321	2,222	2,264
Interest and other, net	(114)	496	11
Income from continuing operations before income taxes	2,207	2,718	2,275
Income tax provision	(415)	(190)	(3,288)
Income (loss) from continuing operations	1,792	2,528	(1,013)
Income (loss) from discontinued operations, net of income taxes	(6)	2	(4)
Net income (loss)	$ 1,786	$ 2,530	$ (1,017)
Income (loss) per share - basic:
Continuing operations (in usd per share)	$ 2.11	$ 2.58	$ (0.95)
Discontinued operations (in usd per share)	(0.01)	0	0
Net income (loss) per share - basic (in usd per share)	2.10	2.58	(0.95)
Income (loss) per share - diluted:
Continuing operations (in usd per share)	2.10	2.55	(0.95)
Discontinued operations (in usd per share)	(0.01)	0	0
Net income (loss) per share - diluted (in usd per share)	$ 2.09	$ 2.55	$ (0.95)
Weighted average shares:
Basic (in shares)	849	980	1,064
Diluted (in shares)	856	991	1,064