CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Net revenue	$ 8,775	$ 7,985	$ 17,409	$ 15,921
Operating Expenses
Personnel	1,603	1,515	3,082	2,852
Marketing	338	309	631	641
Network and processing	189	179	370	357
Professional fees	160	130	291	239
Depreciation and amortization	249	234	496	461
General and administrative	452	282	792	604
Litigation provision	430	0	439	341
Total operating expenses	3,421	2,649	6,101	5,495
Operating income	5,354	5,336	11,308	10,426
Non-operating Income (Expense)
Interest expense	(82)	(142)	(269)	(279)
Investment income (expense) and other	241	84	516	108
Total non-operating income (expense)	159	(58)	247	(171)
Income before income taxes	5,513	5,278	11,555	10,255
Income tax provision	850	1,021	2,002	1,819
Net income	$ 4,663	$ 4,257	$ 9,553	$ 8,436
Class A common stock
Earnings Per Share
Basic Earnings Per Share (in dollars per share)	$ 2.29	$ 2.04	$ 4.68	$ 4.03
Basic Weighted-average Shares Outstanding (in shares)	1,579	1,624	1,582	1,627
Diluted Earnings Per Share (in dollars per share)	$ 2.29	$ 2.03	$ 4.68	$ 4.02
Diluted Weighted-average Shares Outstanding (in shares)	2,039	2,093	2,042	2,098
Class B-1 common stock
Earnings Per Share
Basic Earnings Per Share (in dollars per share)	$ 3.63	$ 3.26	$ 7.44	$ 6.45
Basic Weighted-average Shares Outstanding (in shares)	245	245	245	245
Diluted Earnings Per Share (in dollars per share)	$ 3.63	$ 3.25	$ 7.43	$ 6.44
Diluted Weighted-average Shares Outstanding (in shares)	245	245	245	245
Class C common stock
Earnings Per Share
Basic Earnings Per Share (in dollars per share)	$ 9.16	$ 8.15	$ 18.73	$ 16.10
Basic Weighted-average Shares Outstanding (in shares)	9	10	9	10
Diluted Earnings Per Share (in dollars per share)	$ 9.15	$ 8.14	$ 18.71	$ 16.09
Diluted Weighted-average Shares Outstanding (in shares)	9	10	9	10