CONSOLIDATED STATEMENTS 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	$ 17,772	$ 15,451	$ 13,094
Operating expenses:
Transaction expense	6,790	5,581	4,419
Transaction and loan losses	1,380	1,274	1,011
Customer support and operations	1,615	1,407	1,265
Sales and marketing	1,401	1,314	1,142
Technology and development	2,085	1,831	1,740
General and administrative	1,711	1,541	1,258
Restructuring and other charges	71	309	132
Total operating expenses	15,053	13,257	10,967
Operating income	2,719	2,194	2,127
Other income (expense), net	279	182	73
Income before income taxes	2,998	2,376	2,200
Income tax expense	539	319	405
Net income	$ 2,459	$ 2,057	$ 1,795
Net income per share:
Basic (in usd per share)	$ 2.09	$ 1.74	$ 1.49
Diluted (in usd per share)	$ 2.07	$ 1.71	$ 1.47
Weighted average shares:
Basic (in shares)	1,174	1,184	1,203
Diluted (in shares)	1,188	1,203	1,221