CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income	$ 8,727	$ 8,729
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Client incentives	5,980	4,966
Share-based compensation	434	322
Depreciation and amortization of property, equipment, technology and intangible assets	602	571
Deferred income taxes	981	(116)
VE territory covered losses incurred	(38)	(22)
(Gains) losses on equity investments, net	(611)	(62)
Other	(82)	(87)
Change in operating assets and liabilities:
Settlement receivable	(351)	966
Accounts receivable	(220)	108
Client incentives	(5,202)	(6,261)
Other assets	(164)	(464)
Accounts payable	1	7
Settlement payable	574	(1,324)
Accrued and other liabilities	639	1,058
Accrued litigation	(14)	(47)
Net cash provided by (used in) operating activities	11,256	8,344
Investing Activities
Purchases of property, equipment and technology	(497)	(568)
Investment securities:
Purchases	(3,223)	(549)
Proceeds from maturities and sales	5,286	3,675
Acquisitions, net of cash acquired	(75)	(77)
Purchases of / contributions to other investments	(50)	(254)
Other investing activities	105	81
Net cash provided by (used in) investing activities	1,546	2,308
Financing Activities
Repurchase of class A common stock	(5,709)	(6,572)
Repayments of debt	(3,000)	0
Dividends paid	(2,102)	(2,002)
Proceeds from issuance of senior notes	0	3,985
Cash proceeds from issuance of class A common stock under employee equity plans	162	142
Restricted stock and performance-based shares settled in cash for taxes	(142)	(158)
Other financing activities	0	(118)
Net cash provided by (used in) financing activities	(10,791)	(4,723)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	92	173
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	2,103	6,102
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	19,171	10,832
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	21,274	16,934
Supplemental Disclosure
Cash paid for income taxes, net	2,134	1,793
Interest payments on debt	583	503
Accruals related to purchases of property, equipment and technology	$ 52	$ 34