CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Activities
Net income	$ 4,179	$ 3,959
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Client incentives	2,786	2,371
Share-based compensation	177	128
Depreciation and amortization of property, equipment, technology and intangible assets	227	198
Deferred income taxes	(132)	(15)
VE territory covered losses incurred	(8)	(7)
(Gains) losses on equity investments, net	106	(231)
Other	(26)	(32)
Change in operating assets and liabilities:
Settlement receivable	(54)	(76)
Accounts receivable	(60)	(213)
Client incentives	(2,743)	(2,339)
Other assets	160	(163)
Accounts payable	(64)	(9)
Settlement payable	44	409
Accrued and other liabilities	(666)	206
Accrued litigation	245	46
Net cash provided by (used in) operating activities	4,171	4,232
Investing Activities
Purchases of property, equipment and technology	(249)	(173)
Investment securities:
Purchases	(1,995)	(951)
Proceeds from maturities and sales	1,310	1,374
Acquisitions, net of cash acquired	0	(832)
Purchases of other investments	(20)	(37)
Settlement of derivative instruments	402	0
Other investing activities	42	72
Net cash provided by (used in) investing activities	(510)	(547)
Financing Activities
Repurchase of class A common stock	(3,115)	(4,104)
Repayments of debt	(2,250)	0
Dividends paid	(945)	(809)
Cash proceeds from issuance of class A common stock under equity plans	56	59
Restricted stock and performance-based shares settled in cash for taxes	(112)	(113)
Other financing activities	19	0
Net cash provided by (used in) financing activities	(6,347)	(4,967)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	692	(194)
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	(1,994)	(1,476)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	20,377	19,799
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	18,383	18,323
Supplemental Disclosure
Cash paid for income taxes, net	721	268
Interest payments on debt	244	244
Accruals related to purchases of property, equipment and technology	$ 27	$ 53