CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
Cash flows from operating activities:
Net income	$ 641	$ 3,412
(Income) loss from discontinued operations, net of income taxes	(72)	(2,981)
Adjustments:
Provision for transaction losses	88	96
Depreciation and amortization	140	141
Stock-based compensation	106	92
(Gain) loss on investments, net	(1)	(38)
Deferred income taxes	95	49
Change in fair value of warrant	36	(12)
(Gain) loss on extinguishment of debt	10	0
Changes in assets and liabilities, net of acquisition effects	(105)	(145)
Net cash provided by continuing operating activities	938	614
Net cash provided by (used in) discontinued operating activities	104	(22)
Net cash provided by operating activities	1,042	592
Cash flows from investing activities:
Purchases of property and equipment	(83)	(97)
Purchases of investments	(3,424)	(10,705)
Maturities and sales of investments	3,772	9,195
Other	1	39
Net cash provided by (used in) continuing investing activities	266	(1,568)
Net cash provided by (used in) discontinued investing activities	(1)	4,074
Net cash provided by investing activities	265	2,506
Cash flows from financing activities:
Proceeds from issuance of common stock	0	5
Repurchases of common stock	(304)	(3,997)
Payments for taxes related to net share settlements of restricted stock units and awards	(20)	(40)
Payments for dividends	(122)	(114)
Proceeds from issuance of long-term debt, net	0	994
Repayment of debt	(1,156)	0
Net borrowings under commercial paper program	400	0
Net funds receivable and payable activity	32	0
Other	1	(7)
Net cash used in continuing financing activities	(1,169)	(3,159)
Net cash used in discontinued financing activities	0	(2)
Net cash used in financing activities	(1,169)	(3,161)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(11)	(34)
Net increase (decrease) in cash, cash equivalents and restricted cash	127	(97)
Cash, cash equivalents and restricted cash at beginning of period	1,594	996
Cash, cash equivalents and restricted cash at end of period	1,721	899
Cash, cash equivalents and restricted cash of continuing operations at end of period	1,690	883
Supplemental cash flow disclosures:
Cash paid for interest	104	90
Cash paid for interest on financial lease obligations	0	3
Cash paid for income taxes	93	42
Discontinued Operations, Held-for-sale
Cash flows from financing activities:
Less: Cash, cash equivalents and restricted cash of discontinued operations	$ 31	$ 16