Visa (V) 10-Q 23 Apr 24 2024 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Mar. 31, 2024	Apr. 17, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-33977
Entity Registrant Name	VISA INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-0267673
Entity Address, Address Line One	P.O. Box 8999
Entity Address, City or Town	San Francisco,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94128-8999
City Area Code	650
Local Phone Number	432-3200
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001403161
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Class A common stock
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	V
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		1,574,151,974
2026 Notes
Document Information [Line Items]
Title of 12(b) Security	1.500% Senior Notes due 2026
Trading Symbol	V26
Security Exchange Name	NYSE
2029 Notes
Document Information [Line Items]
Title of 12(b) Security	2.000% Senior Notes due 2029
Trading Symbol	V29
Security Exchange Name	NYSE
2034 Notes
Document Information [Line Items]
Title of 12(b) Security	2.375% Senior Notes due 2034
Trading Symbol	V34
Security Exchange Name	NYSE
Class B-1 common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		245,513,385
Class C common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		9,273,174

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Assets
Cash and cash equivalents	$ 12,993	$ 16,286
Restricted cash equivalents—U.S. litigation escrow	1,584	1,764
Investment securities	4,710	3,842
Settlement receivable	3,558	2,183
Accounts receivable	2,272	2,291
Customer collateral	3,367	3,005
Current portion of client incentives	1,740	1,577
Prepaid expenses and other current assets	2,551	2,584
Total current assets	32,775	33,532
Investment securities	3,092	1,921
Client incentives	3,998	3,789
Property, equipment and technology, net	3,630	3,425
Goodwill	18,837	17,997
Intangible assets, net	26,375	26,104
Other assets	3,692	3,731
Total assets	92,399	90,499
Liabilities
Accounts payable	338	375
Settlement payable	4,485	3,269
Customer collateral	3,367	3,005
Accrued compensation and benefits	1,065	1,506
Client incentives	7,949	8,177
Accrued liabilities	4,386	5,015
Accrued litigation	1,853	1,751
Total current liabilities	23,443	23,098
Long-term debt	20,603	20,463
Deferred tax liabilities	5,145	5,114
Other liabilities	2,723	3,091
Total liabilities	51,914	51,766
Commitments and contingencies (Note 13)
Equity
Preferred stock	1,602	1,698
Right to recover for covered losses	(175)	(140)
Additional paid-in capital	20,709	20,452
Accumulated income	19,347	18,040
Accumulated other comprehensive income (loss):
Investment securities	(25)	(64)
Defined benefit pension and other postretirement plans	(145)	(155)
Derivative instruments	(162)	(177)
Foreign currency translation adjustments	(666)	(921)
Total accumulated other comprehensive income (loss)	(998)	(1,317)
Total equity	40,485	38,733
Total liabilities and equity	92,399	90,499
Class A common stock
Equity
Common stock	0	0
Class B-1 common stock
Equity
Common stock	0	0
Class C common stock
Equity
Common stock	$ 0	$ 0

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares shares in Millions	Mar. 31, 2024	Sep. 30, 2023
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares issued (in shares)	5	5
Preferred stock, shares outstanding (in shares)	5	5
Common stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Class A common stock
Common stock, shares issued (in shares)	1,574	1,594
Common stock, shares outstanding (in shares)	1,574	1,594
Class B-1 common stock
Common stock, shares issued (in shares)	245	245
Common stock, shares outstanding (in shares)	245	245
Class C common stock
Common stock, shares issued (in shares)	9	10
Common stock, shares outstanding (in shares)	9	10

CONSOLIDATED STATEMENTS OF OPER

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

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 4,663	$ 4,257	$ 9,553	$ 8,436
Investment securities:
Net unrealized gain (loss)	(8)	36	50	51
Income tax effect	1	(8)	(11)	(11)
Defined benefit pension and other postretirement plans:
Net unrealized actuarial gain (loss) and prior service credit (cost)	8	3	8	5
Income tax effect	(2)	0	(2)	(1)
Reclassification adjustments	3	3	6	4
Income tax effect	(1)	0	(2)	0
Derivative instruments:
Net unrealized gain (loss)	58	(75)	(19)	(191)
Income tax effect	(7)	17	9	31
Reclassification adjustments	(6)	6	33	(1)
Income tax effect	1	(3)	(8)	(7)
Foreign currency translation adjustments:
Translation adjustments	(357)	290	231	1,499
Income tax effect	(33)	0	24	0
Other comprehensive income (loss)	(343)	269	319	1,379
Comprehensive income	$ 4,320	$ 4,526	$ 9,872	$ 9,815

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) - USD ($) shares in Millions, $ in Millions		Total	Preferred Stock		Common Stock and Additional Paid-in Capital	Right to Recover for Covered Losses	Accumulated Income	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Sep. 30, 2022			5
Balance as of beginning of period at Sep. 30, 2022		$ 35,581	$ 2,324	[1]	$ 19,545	$ (35)	$ 16,116	$ (2,369)
Beginning balance (in shares) at Sep. 30, 2022					1,890
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		8,436					8,436
Other comprehensive income (loss)		1,379						1,379
VE territory covered losses incurred		(15)				(15)
Recovery through conversion rate adjustment		1	$ (14)			15
Conversion to class A common stock (in shares)			0	[2]	7
Conversion to class A common stock		0	$ (425)		$ 425
Share-based compensation		400			$ 400
Stock issued under equity plans (in shares)					3
Stock issued under equity plans		118			$ 118
Restricted stock and performance-based shares settled in cash for taxes (in shares)	[2]				0
Restricted stock and performance-based shares settled in cash for taxes		(118)			$ (118)
Cash dividends declared and paid, at a quarterly amount per class A common stock		(1,886)					(1,886)
Repurchase of class A common stock (in shares)					(26)
Repurchase of class A common stock		(5,331)			$ (275)		(5,056)
Ending balance (in shares) at Mar. 31, 2023			5
Balance as of end of period at Mar. 31, 2023		38,565	$ 1,885	[1]	$ 20,095	(35)	17,610	(990)
Ending balance (in shares) at Mar. 31, 2023					1,874
Beginning balance (in shares) at Dec. 31, 2022			5
Balance as of beginning of period at Dec. 31, 2022		36,924	$ 1,981		$ 19,827	(28)	16,403	(1,259)
Beginning balance (in shares) at Dec. 31, 2022					1,881
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		4,257					4,257
Other comprehensive income (loss)		269						269
VE territory covered losses incurred		(7)				(7)
Conversion to class A common stock (in shares)			0	[3]	2
Conversion to class A common stock		0	$ (96)		$ 96
Share-based compensation		223			$ 223
Stock issued under equity plans (in shares)					1
Stock issued under equity plans		62			$ 62
Restricted stock and performance-based shares settled in cash for taxes (in shares)	[3]				0
Restricted stock and performance-based shares settled in cash for taxes		(6)			$ (6)
Cash dividends declared and paid, at a quarterly amount per class A common stock		(941)					(941)
Repurchase of class A common stock (in shares)					(10)
Repurchase of class A common stock		(2,216)			$ (107)		(2,109)
Ending balance (in shares) at Mar. 31, 2023			5
Balance as of end of period at Mar. 31, 2023		$ 38,565	$ 1,885	[1]	$ 20,095	(35)	17,610	(990)
Ending balance (in shares) at Mar. 31, 2023					1,874
Beginning balance (in shares) at Sep. 30, 2023		5	5
Balance as of beginning of period at Sep. 30, 2023		$ 38,733	$ 1,698	[4]	$ 20,452	(140)	18,040	(1,317)
Beginning balance (in shares) at Sep. 30, 2023					1,849
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		9,553					9,553
Other comprehensive income (loss)		319						319
VE territory covered losses incurred		(60)				(60)
Recovery through conversion rate adjustment		0	$ (25)			25
Conversion to class A common stock (in shares)			0	[5]	2
Conversion to class A common stock		0	$ (71)		$ 71
Share-based compensation		451			$ 451
Stock issued under equity plans (in shares)					3
Stock issued under equity plans		183			$ 183
Restricted stock and performance-based shares settled in cash for taxes (in shares)					(1)
Restricted stock and performance-based shares settled in cash for taxes		(181)			$ (181)
Cash dividends declared and paid, at a quarterly amount per class A common stock		(2,120)					(2,120)
Repurchase of class A common stock (in shares)					(25)
Repurchase of class A common stock		$ (6,393)			$ (267)		(6,126)
Ending balance (in shares) at Mar. 31, 2024		5	5
Balance as of end of period at Mar. 31, 2024		$ 40,485	$ 1,602	[4]	$ 20,709	(175)	19,347	(998)
Ending balance (in shares) at Mar. 31, 2024					1,828
Beginning balance (in shares) at Dec. 31, 2023			5
Balance as of beginning of period at Dec. 31, 2023		39,733	$ 1,615		$ 20,490	(139)	18,422	(655)
Beginning balance (in shares) at Dec. 31, 2023					1,836
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		4,663					4,663
Other comprehensive income (loss)		(343)						(343)
VE territory covered losses incurred		(36)				(36)
Conversion to class A common stock (in shares)			0	[6]	1
Conversion to class A common stock		0	$ (13)		$ 13
Share-based compensation		242			$ 242
Stock issued under equity plans (in shares)					1
Stock issued under equity plans		79			$ 79
Restricted stock and performance-based shares settled in cash for taxes (in shares)	[6]				0
Restricted stock and performance-based shares settled in cash for taxes		(9)			$ (9)
Cash dividends declared and paid, at a quarterly amount per class A common stock		(1,060)					(1,060)
Repurchase of class A common stock (in shares)					(10)
Repurchase of class A common stock		$ (2,784)			$ (106)		(2,678)
Ending balance (in shares) at Mar. 31, 2024		5	5
Balance as of end of period at Mar. 31, 2024		$ 40,485	$ 1,602	[4]	$ 20,709	$ (175)	$ 19,347	$ (998)
Ending balance (in shares) at Mar. 31, 2024					1,828
[1] As of March 31, 2023 and September 30, 2022, the book value of series A preferred stock was $627 million and $1.0 billion, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans for the book value of series B and series C preferred stock. Increase or decrease is less than one million shares. Increase or decrease is less than one million shares. As of March 31, 2024 and September 30, 2023, the book value of series A preferred stock was $385 million and $456 million, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans Increase or decrease is less than one million shares. Increase or decrease is less than one million shares.

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Sep. 30, 2022
Dividends declared, quarterly, per share (in dollars per share)	$ 0.52	$ 0.45	$ 0.52	$ 0.45
Dividends paid, quarterly, per share (in dollars per share)	$ 0.52	$ 0.45	$ 0.52	$ 0.45
Preferred stock	$ 1,602		$ 1,602		$ 1,698
Series A preferred stock
Preferred stock	$ 385	$ 627	$ 385	$ 627	$ 456	$ 1,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net income	$ 9,553	$ 8,436
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Client incentives	6,605	5,691
Share-based compensation	451	400
Depreciation and amortization	496	461
Deferred income taxes	(68)	(154)
VE territory covered losses incurred	(60)	(15)
(Gains) losses on equity investments, net	26	196
Other	58	(22)
Change in operating assets and liabilities:
Settlement receivable	(1,335)	147
Accounts receivable	34	(67)
Client incentives	(7,088)	(5,521)
Other assets	(258)	(77)
Accounts payable	(25)	(48)
Settlement payable	1,143	(493)
Accrued and other liabilities	(1,479)	(1,047)
Accrued litigation	99	144
Net cash provided by (used in) operating activities	8,152	8,031
Investing Activities
Purchases of property, equipment and technology	(548)	(459)
Investment securities:
Purchases	(3,686)	(2,487)
Proceeds from maturities and sales	2,145	1,760
Acquisitions, net of cash and restricted cash acquired	(915)	0
Purchases of other investments	(14)	(70)
Settlement of derivative instruments	0	402
Other investing activities	(47)	19
Net cash provided by (used in) investing activities	(3,065)	(835)
Financing Activities
Repurchase of class A common stock	(6,338)	(5,309)
Repayments of debt	0	(2,250)
Dividends paid	(2,120)	(1,886)
Cash proceeds from issuance of class A common stock under equity plans	183	118
Restricted stock and performance-based shares settled in cash for taxes	(181)	(118)
Other financing activities	203	172
Net cash provided by (used in) financing activities	(8,253)	(9,273)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	124	828
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	(3,042)	(1,249)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	21,990	20,377
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	18,948	19,128
Supplemental Disclosure
Cash paid for income taxes, net	3,658	2,635
Interest payments on debt	261	293
Accruals related to purchases of property, equipment and technology	$ 99	$ 148

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1—Summary of Significant Accounting Policies Organization. Visa Inc., together with its subsidiaries (Visa or the Company), is a global payments technology company that facilitates global commerce and money movement across more than 200 countries and territories. Visa operates one of the world’s largest electronic payments networks — VisaNet — which provides transaction processing services (primarily authorization, clearing and settlement). The Company offers products, solutions and services that facilitate secure, reliable and efficient money movement for participants in the ecosystem. Visa is not a financial institution and does not issue cards, extend credit or set rates and fees for account holders of Visa products. In most cases, account holder and merchant relationships belong to, and are managed by, Visa’s financial institution clients. Consolidation and basis of presentation. The accompanying unaudited consolidated financial statements include the accounts of Visa and its consolidated entities and are presented in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP). The Company consolidates its majority-owned and controlled entities, including variable interest entities (VIEs) for which the Company is the primary beneficiary. The Company’s investments in VIEs have not been material to its unaudited consolidated financial statements as of and for the periods presented. Intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited consolidated financial statements are presented in accordance with the U.S. Securities and Exchange Commission (SEC) requirements for Quarterly Reports on Form 10-Q and, consequently, do not include all of the annual disclosures required by U.S. GAAP. Reference should be made to Visa’s Annual Report on Form 10-K for the year ended September 30, 2023 for additional disclosures, including a summary of the Company’s significant accounting policies. In the opinion of management, the accompanying unaudited consolidated financial statements include all normal recurring adjustments necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results of operations for interim periods are not necessarily indicative of results for the full year. Use of estimates. The preparation of the accompanying unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions about future events. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited consolidated financial statements and reported amounts of revenue and expenses during the reporting period. These estimates may change as new events occur and additional information is obtained, and will be recognized in the period in which such changes occur. Future actual results could differ materially from these estimates.

Acquisitions

Acquisitions	6 Months Ended
	Mar. 31, 2024
Business Combination and Asset Acquisition [Abstract]
Acquisitions	Note 2—Acquisitions

Revenue

Revenue	6 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue	Note 3—Revenue The nature, amount, timing and uncertainty of the Company’s revenue and cash flows and how they are affected by economic factors are most appropriately depicted through the Company’s revenue categories and geographical markets. The following tables disaggregate the Company’s net revenue by revenue category and by geography: Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions) Service revenue $ 4,033 $ 3,771 $ 7,948 $ 7,282 Data processing revenue 4,259 3,819 8,615 7,646 International transaction revenue 2,984 2,749 6,003 5,546 Other revenue 756 551 1,448 1,138 Client incentives (3,257) (2,905) (6,605) (5,691) Net revenue $ 8,775 $ 7,985 $ 17,409 $ 15,921 Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions) U.S. $ 3,643 $ 3,540 $ 7,288 $ 7,107 International 5,132 4,445 10,121 8,814 Net revenue $ 8,775 $ 7,985 $ 17,409 $ 15,921 Remaining performance obligations are comprised of deferred revenue and contract revenue that will be invoiced and recognized as revenue in future periods primarily related to value added services. As of March 31, 2024, the remaining performance obligations were $3.4 billion. The Company expects approximately half to be recognized as revenue in the next two years and the remaining thereafter. However, the amount and timing of revenue recognition is affected by several factors, including contract modifications and terminations, which could impact the estimate of amounts allocated to remaining performance obligations and when such revenue could be recognized.

Cash, Cash Equivalents, Restric

Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	6 Months Ended
	Mar. 31, 2024
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	Note 4—Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents The Company reconciles cash, cash equivalents, restricted cash and restricted cash equivalents reported on the consolidated balance sheets that aggregate to the beginning and ending balances shown in the consolidated statements of cash flows as follows: March 31, September 30, (in millions) Cash and cash equivalents $ 12,993 $ 16,286 Restricted cash and restricted cash equivalents: U.S. litigation escrow 1,584 1,764 Customer collateral 3,367 3,005 Prepaid expenses and other current assets 1,004 935 Cash, cash equivalents, restricted cash and restricted cash equivalents $ 18,948 $ 21,990

U.S. and Europe Retrospective R

U.S. and Europe Retrospective Responsibility Plans	6 Months Ended
	Mar. 31, 2024
Retrospective Responsibility Plans [Abstract]
U.S. and Europe Retrospective Responsibility Plans	Note 5—U.S. and Europe Retrospective Responsibility Plans U.S. Retrospective Responsibility Plan Under the terms of the U.S. retrospective responsibility plan, the Company maintains an escrow account from which settlements of, or judgments in, certain litigation (U.S. covered litigation) are paid. The accrual related to the U.S. covered litigation could be either higher or lower than the U.S. litigation escrow account balance. See Note 13—Legal Matters . The following table presents the changes in the restricted cash equivalents—U.S. litigation escrow account: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 1,764 $ 1,449 Deposits into the U.S. litigation escrow account — 350 Payments to opt-out merchants (1) , net of interest earned on escrow funds (180) (183) Balance as of end of period $ 1,584 $ 1,616 (1) These payments are associated with the interchange multidistrict litigation. See Note 13—Legal Matters . Europe Retrospective Responsibility Plan Visa Inc., Visa International and Visa Europe are parties to certain existing and potential litigation relating to the setting of multilateral interchange fee rates in the Visa Europe territory (VE territory covered litigation). Under the terms of the Europe retrospective responsibility plan, the Company is entitled to recover certain losses resulting from VE territory covered litigation (VE territory covered losses) through a periodic adjustment to the class A common stock conversion rates applicable to the series B and C preferred stock. VE territory covered losses are recorded in right to recover for covered losses, a contra-equity account within stockholders’ equity, before the corresponding adjustment to the applicable conversion rate is effected. Adjustments to the conversion rate may be executed once in any six-month period unless a single, individual loss greater than €20 million is incurred, in which case, the six-month limitation does not apply. When the adjustment to the conversion rate is made, the amount previously recorded in right to recover for covered losses is then recorded against the book value of the preferred stock within stockholders’ equity. The following table presents the activities related to VE territory covered losses in preferred stock and right to recover for covered losses within stockholders’ equity: Six Months Ended Preferred Stock Right to Recover for Covered Losses Series B Series C (in millions) Balance as of beginning of period $ 441 $ 801 $ (140) VE territory covered losses incurred (1) — — (60) Recovery through conversion rate adjustment (22) (3) 25 Balance as of end of period $ 419 $ 798 $ (175) Six Months Ended Preferred Stock Right to Recover for Covered Losses Series B Series C (in millions) Balance as of beginning of period $ 460 $ 812 $ (35) VE territory covered losses incurred (1) — — (15) Recovery through conversion rate adjustment (2) (7) (7) 15 Balance as of end of period $ 453 $ 805 $ (35) (1) VE territory covered losses incurred reflect settlements with merchants and additional legal costs. See Note 13—Legal Matters . (2) Adjustment to right to recover for covered losses for the conversion rate adjustment differs from the actual recovered amount due to differences in foreign exchange rates between the time the losses were incurred and the subsequent recovery through the conversion rate adjustment. The following table presents the as-converted value of the preferred stock available to recover VE territory covered losses compared to the book value of preferred stock recorded within the Company’s consolidated balance sheets: March 31, 2024 September 30, 2023 As-converted Value of Preferred Stock (1),(2) Book Value of Preferred Stock (1) As-converted Value of Preferred Stock (1),(3) Book Value of Preferred Stock (1) (in millions) Series B preferred stock $ 2,010 $ 419 $ 1,676 $ 441 Series C preferred stock 3,194 798 2,635 801 Total 5,204 1,217 4,311 1,242 Less: right to recover for covered losses (175) (175) (140) (140) Total recovery for covered losses available $ 5,029 $ 1,042 $ 4,171 $ 1,102 (1) Figures in the table may not recalculate exactly due to rounding. As-converted and book values are based on unrounded numbers. (2) As of March 31, 2024, the as-converted value of preferred stock is calculated as the product of: (a) 2 million and 3 million shares of the series B and C preferred stock outstanding, respectively; (b) 2.903 and 3.625, the class A common stock conversion rate applicable to the series B and C preferred stock outstanding, respectively; and (c) $279.08, Visa’s class A common stock closing stock price. (3) As of September 30, 2023, the as-converted value of preferred stock is calculated as the product of: (a) 2 million and 3 million shares of the series B and C preferred stock outstanding, respectively; (b) 2.937 and 3.629, the class A common stock conversion rate applicable to the series B and C preferred stock outstanding, respectively; and (c) $230.01, Visa’s class A common stock closing stock price.

Fair Value Measurements and Inv

Fair Value Measurements and Investments	6 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements and Investments	Note 6—Fair Value Measurements and Investments Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value Measurements Level 1 Level 2 March 31, September 30, March 31, September 30, (in millions) Assets Cash equivalents and restricted cash equivalents: Money market funds $ 9,050 $ 13,504 $ — $ — U.S. Treasury securities 834 301 — — Investment securities: Marketable equity securities 374 339 — — U.S. government-sponsored debt securities — — 1,510 1,108 U.S. Treasury securities 5,918 4,316 — — Other current and non-current assets: Money market funds 29 23 — — Derivative instruments — — 210 293 Total $ 16,205 $ 18,483 $ 1,720 $ 1,401 Liabilities Accrued compensation and benefits: Deferred compensation liability $ 223 $ 175 $ — $ — Accrued and other liabilities: Derivative instruments — — 278 396 Total $ 223 $ 175 $ 278 $ 396 Level 1 assets and liabilities. Money market funds, U.S. Treasury securities and marketable equity securities are classified as Level 1 within the fair value hierarchy, as fair value is based on unadjusted quoted prices in active markets for identical assets. The Company’s deferred compensation liability is measured at fair value based on marketable equity securities held under the deferred compensation plan. Level 2 assets and liabilities. The fair value of U.S. government-sponsored debt securities, as provided by third-party pricing vendors, is based on quoted prices in active markets for similar, not identical, assets. Derivative instruments are valued using inputs that are observable in the market or can be derived principally from or corroborated by observable market data. U.S. Government-sponsored Debt Securities and U.S. Treasury Securities The amortized cost, unrealized gains and losses and fair value of debt securities were as follows: March 31, 2024 Amortized Gross Unrealized Fair Gains Losses (in millions) U.S. government-sponsored debt securities $ 1,511 $ — $ (1) $ 1,510 U.S. Treasury securities 6,782 4 (34) 6,752 Total $ 8,293 $ 4 $ (35) $ 8,262 September 30, 2023 Amortized Gross Unrealized Fair Gains Losses (in millions) U.S. government-sponsored debt securities $ 1,109 $ 1 $ (2) $ 1,108 U.S. Treasury securities 4,697 — (80) 4,617 Total $ 5,806 $ 1 $ (82) $ 5,725 Debt securities with unrealized losses for less than 12 months and 12 months or greater were as follows: March 31, 2024 Less Than 12 Months 12 Months or Greater Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) U.S. government-sponsored debt securities $ 1,282 $ (1) $ — $ — U.S. Treasury securities 2,789 (6) 1,870 (28) Total $ 4,071 $ (7) $ 1,870 $ (28) September 30, 2023 Less Than 12 Months 12 Months or Greater Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) U.S. government-sponsored debt securities $ 412 $ (2) $ 50 $ — U.S. Treasury securities 1,360 (12) 2,128 (68) Total $ 1,772 $ (14) $ 2,178 $ (68) The unrealized losses were primarily attributable to changes in interest rates. The stated maturities of debt securities were as follows: March 31, (in millions) Due within one year $ 5,170 Due after one year through five years 3,092 Total $ 8,262 Equity Securities For the three months ended March 31, 2024 and 2023, the Company recognized net unrealized losses of $23 million and $82 million, respectively, on marketable and non-marketable equity securities held as of period end. For the six months ended March 31, 2024 and 2023, the Company recognized net unrealized gains of $13 million and net unrealized losses of $184 million, respectively, on marketable and non-marketable equity securities held as of period end. Fair value measurement alternative. The Company’s investments in privately held companies do not have readily determinable fair values. These investments are measured at fair value on a non-recurring basis and are classified as Level 3 due to the absence of quoted market prices, the inherent lack of liquidity and the fact that significant inputs used to measure fair value are unobservable and require management’s judgment. The following table summarizes the Company’s non-marketable equity securities held as of period end that were accounted for using the fair value measurement alternative: March 31, (in millions) Initial cost basis $ 710 Adjustments: Upward adjustments 909 Downward adjustments (including impairment) (445) Carrying amount $ 1,174 Unrealized gains and losses of the Company’s non-marketable equity securities held as of period end that were accounted for using the fair value measurement alternative were as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions) Upward adjustments $ — $ 2 $ 9 $ 19 Downward adjustments (including impairment) $ (15) $ (89) $ (15) $ (89) Other Fair Value Disclosures Debt. Debt instruments are measured at amortized cost on the Company’s consolidated balance sheets. The fair value of the debt instruments, as provided by third-party pricing vendors, is based on quoted prices in active markets for similar, not identical, assets. If measured at fair value in the financial statements, these instruments would be classified as Level 2 in the fair value hierarchy. As of March 31, 2024, the carrying value and estimated fair value of debt was $20.6 billion and $18.6 billion, respectively. As of September 30, 2023, the carrying value and estimated fair value of debt was $20.5 billion and $17.7 billion, respectively. Other financial instruments not measured at fair value. As of March 31, 2024, the carrying values of settlement receivable and payable and customer collateral are an approximate fair value due to their generally short maturities. If measured at fair value in the financial statements, these financial instruments would be classified as Level 2 in the fair value hierarchy. Non-financial assets.

Debt

Debt	6 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Debt	Note 7—Debt The Company had outstanding debt as follows: March 31, September 30, Effective Interest Rate (1) (in millions, except percentages) U.S. dollar notes 3.15% Senior Notes due December 2025 $ 4,000 $ 4,000 3.26 % 1.90% Senior Notes due April 2027 1,500 1,500 2.02 % 0.75% Senior Notes due August 2027 500 500 0.84 % 2.75% Senior Notes due September 2027 750 750 2.91 % 2.05% Senior Notes due April 2030 1,500 1,500 2.13 % 1.10% Senior Notes due February 2031 1,000 1,000 1.20 % 4.15% Senior Notes due December 2035 1,500 1,500 4.23 % 2.70% Senior Notes due April 2040 1,000 1,000 2.80 % 4.30% Senior Notes due December 2045 3,500 3,500 4.37 % 3.65% Senior Notes due September 2047 750 750 3.73 % 2.00% Senior Notes due August 2050 1,750 1,750 2.09 % Euro notes 1.50% Senior Notes due June 2026 1,459 1,434 1.71 % 2.00% Senior Notes due June 2029 1,081 1,062 2.13 % 2.375% Senior Notes due June 2034 702 690 2.53 % Total debt 20,992 20,936 Unamortized discounts and debt issuance costs (151) (159) Hedge accounting fair value adjustments (2) (238) (314) Total carrying value of debt $ 20,603 $ 20,463 Reported as: Current maturities of debt $ — $ — Long-term debt 20,603 20,463 Total carrying value of debt $ 20,603 $ 20,463 (1) Effective interest rates disclosed do not reflect hedge accounting adjustments. (2) Represents the fair value of interest rate swap agreements entered into on a portion of the outstanding senior notes.

Settlement Guarantee Management

Settlement Guarantee Management	6 Months Ended
	Mar. 31, 2024
Settlement Guarantee Management [Abstract]
Settlement Guarantee Management	Note 8—Settlement Guarantee Management The Company indemnifies its clients for settlement losses suffered due to failure of any other client to fund its settlement obligations in accordance with the Visa operating rules. This indemnification creates settlement risk for the Company due to the difference in timing between the date of a payment transaction and the date of subsequent settlement. The Company maintains and regularly reviews global settlement risk policies and procedures to manage settlement risk, which may require clients to post collateral if certain credit standards are not met. Historically, the Company has experienced minimal losses as a result of its settlement risk guarantee. However, the Company’s future obligations, which could be material under its guarantees, are not determinable as they are dependent upon future events. The Company’s settlement exposure is limited to the amount of unsettled Visa payment transactions at any point in time, which vary significantly day to day. During the six months ended March 31, 2024, the Company’s maximum daily settlement exposure was $133.7 billion and the average daily settlement exposure was $82.3 billion. To mitigate the risk of settlement exposure, the Company holds various forms of collateral including restricted cash, letters of credit, guarantees, beneficial rights to trust assets and pledged securities. As of March 31, 2024, the Company had total collateral of $7.2 billion.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Note 9—Stockholders’ Equity As-converted class A common stock. The number of shares of each series and class, and the number of shares of class A common stock on an as-converted basis were as follows: March 31, 2024 September 30, 2023 Shares Conversion Rate Into As-converted Class A Common Stock (1) Shares Conversion Rate Into As-converted Class A Common Stock (1) (in millions, except conversion rate) Series A preferred stock — (2) 100.0000 6 — (2) 100.0000 7 Series B preferred stock 2 2.9030 7 2 2.9370 7 Series C preferred stock 3 3.6250 11 3 3.6290 11 Class A common stock 1,574 — 1,574 1,594 — 1,594 Class B-1 common stock 245 1.5875 (3) 390 245 1.5875 (3) 390 Class C common stock 9 4.0000 37 10 4.0000 38 Total 2,025 2,047 (1) Figures in the table may not recalculate exactly due to rounding. As-converted class A common stock is calculated based on unrounded numbers. (2) The number of shares outstanding was less than one million. (3) The class B-1 to class A common stock conversion rate is presented on a rounded basis. Conversion calculations for dividend payments are based on a conversion rate rounded to the tenth decimal. Reduction in as-converted shares. The following table presents the reduction in the number of as-converted class B-1 common stock after deposits into the U.S. litigation escrow account under the U.S. retrospective responsibility plan: Six Months Ended 2024 2023 (in millions, except per share data) Reduction in equivalent number of class A common stock — 2 Effective price per share (1) $ — $ 209.14 Deposits into the U.S. litigation escrow account $ — $ 350 (1) Effective price per share for each adjustment is calculated using the volume-weighted average price of the Company’s class A common stock over a pricing period in accordance with the Company’s current certificate of incorporation. The following table presents the reduction in the number of as-converted series B and C preferred stock after the Company recovered VE territory covered losses through conversion rate adjustments under the Europe retrospective responsibility plan: Six Months Ended Six Months Ended Series B Series C Series B Series C (in millions, except per share data) Reduction in equivalent number of class A common stock — (1) — (1) — (1) — (1) Effective price per share (2) $ 254.32 $ 254.32 $ 211.34 $ 211.34 Recovery through conversion rate adjustment $ 22 $ 3 $ 7 $ 7 (1) The reduction in equivalent number of shares of class A common stock was less than one million shares. (2) Effective price per share for each adjustment is calculated using the volume-weighted average price of the Company’s class A common stock over a pricing period in accordance with the Company’s current certificates of designations for its series B and C preferred stock. Common stock repurchases. The following table presents share repurchases in the open market: Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions, except per share data) Shares repurchased in the open market (1) 10 10 25 26 Average repurchase cost per share (2) $ 280.41 $ 221.32 $ 255.09 $ 206.88 Total cost (2) $ 2,784 $ 2,216 $ 6,393 $ 5,331 (1) Shares repurchased in the open market reflect repurchases that settled during the three and six months ended March 31, 2024 and 2023. All shares repurchased in the open market have been retired and constitute authorized but unissued shares. (2) Figures in the table may not recalculate exactly due to rounding. Average repurchase cost per share and total cost are calculated based on unrounded numbers and include applicable taxes. In October 2023 and 2022, the Company’s board of directors authorized share repurchase programs of $25.0 billion providing multi-year flexibility, and $12.0 billion, respectively. These authorizations have no expiration date. As of March 31, 2024, the Company’s share repurchase program had remaining authorized funds of $23.6 billion. All share repurchase programs authorized prior to October 2023 have been completed. Class B common stock. On January 23, 2024, Visa’s common stockholders approved amendments to the Company’s certificate of incorporation authorizing Visa to implement an exchange offer program that would have the effect of releasing transfer restrictions on portions of the Company’s class B common stock by allowing holders to exchange a portion of their outstanding shares of class B common stock for shares of freely tradeable class C common stock. The certificate of incorporation amendments automatically redenominated all shares of class B common stock outstanding at the amendment date as class B-1 common stock with no changes to the par value, conversion features, rights and privileges of the class B-1 common stock. The amendments also authorized new classes of class B common stock that will only be issuable in connection with an exchange offer where a preceding class of B common stock is tendered in exchange and retired. When referred to prior to January 23, 2024, class B common stock means the Company’s legacy class B common stock, and following January 23, 2024, means the Company’s class B-1 common stock, and to the extent issued in an exchange offer, class B-2 common stock, class B-3 common stock, class B-4 common stock and class B-5 common stock, collectively. Capital stock authorized. As of March 31, 2024 and September 30, 2023, the Company was authorized to issue 25 million shares of preferred stock, of which the following series have been created and authorized: 4 million shares of series A convertible participating preferred stock, 2 million shares of series B convertible participating preferred stock and 3 million shares of series C convertible participating preferred stock. As of March 31, 2024, the Company was authorized to issue 2.0 trillion shares of class A common stock, 499 million shares of class B-1 common stock, 123 million shares of class B-2 common stock, 61 million shares of class B-3 common stock, 31 million shares of class B-4 common stock, 15 million shares of class B-5 common stock and 1.1 billion shares of class C common stock. As of September 30, 2023, the Company was authorized to issue 2.0 trillion shares of class A common stock, 622 million shares of class B-1 common stock and 1.1 billion shares of class C common stock. Dividends. During the three months ended March 31, 2024 and 2023, the Company declared and paid dividends of $1,060 million and $941 million, respectively. During the six months ended March 31, 2024 and 2023, the Company declared and paid dividends of $2.1 billion and $1.9 billion, respectively. On April 23, 2024, the Company’s board declared a quarterly cash dividend of $0.52 per share of class A common stock (determined in the case of all other outstanding common and preferred stock on an as-converted basis), payable on June 3, 2024, to all holders of record as of May 17, 2024.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Note 10—Earnings Per Share The following table presents earnings per share for the three months ended March 31, 2024: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 3,616 1,579 $ 2.29 $ 4,663 2,039 (3) $ 2.29 Class B-1 common stock 892 245 $ 3.63 $ 891 245 $ 3.63 Class C common stock 85 9 $ 9.16 $ 85 9 $ 9.15 Participating securities 70 Not presented Not presented $ 70 Not presented Not presented Net income $ 4,663 The following table presents earnings per share for the six months ended March 31, 2024: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 7,408 1,582 $ 4.68 $ 9,553 2,042 (3) $ 4.68 Class B-1 common stock 1,825 245 $ 7.44 $ 1,823 245 $ 7.43 Class C common stock 176 9 $ 18.73 $ 176 9 $ 18.71 Participating securities 144 Not presented Not presented $ 144 Not presented Not presented Net income $ 9,553 The following table presents earnings per share for the three months ended March 31, 2023: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 3,307 1,624 $ 2.04 $ 4,257 2,093 (3) $ 2.03 Class B-1 common stock 800 245 $ 3.26 $ 799 245 $ 3.25 Class C common stock 79 10 $ 8.15 $ 79 10 $ 8.14 Participating securities 71 Not presented Not presented $ 71 Not presented Not presented Net income $ 4,257 The following table presents earnings per share for the six months ended March 31, 2023: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 6,549 1,627 $ 4.03 $ 8,436 2,098 (3) $ 4.02 Class B-1 common stock 1,584 245 $ 6.45 $ 1,582 245 $ 6.44 Class C common stock 157 10 $ 16.10 $ 156 10 $ 16.09 Participating securities 146 Not presented Not presented $ 146 Not presented Not presented Net income $ 8,436 (1) The weighted-average number of shares of as-converted class B-1 common stock used in the income allocation was 390 million for the three and six months ended March 31, 2024 and 393 million for the three and six months ended March 31, 2023. The weighted-average number of shares of as-converted class C common stock used in the income allocation was 37 million and 38 million for the three and six months ended March 31, 2024, respectively, and 39 million for the three and six months ended March 31, 2023. The weighted-average number of shares of preferred stock included within participating securities was 6 million of as-converted series A preferred stock for the three and six months ended March 31, 2024 and 10 million and 11 million of as-converted series A preferred stock for the three and six months ended March 31, 2023, respectively, 7 million of as-converted series B preferred stock for the three and six months ended March 31, 2024 and 2023, and 11 million of as-converted series C preferred stock for the three and six months ended March 31, 2024 and 2023. (2) Figures in the table may not recalculate exactly due to rounding. Basic and diluted earnings per share are calculated based on unrounded numbers. (3) Weighted-average diluted shares outstanding are calculated on an as-converted basis and include incremental common stock equivalents, as calculated under the treasury stock method. The common stock equivalents are not material for the three and six months ended March 31, 2024 and 2023.

Share-based Compensation

Share-based Compensation	6 Months Ended
	Mar. 31, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Share-based Compensation	Note 11—Share-based Compensation The following table presents the equity awards granted to employees and non-employee directors under the amended and restated 2007 Equity Incentive Compensation Plan (EIP) during the six months ended March 31, 2024: Granted Weighted-Average Grant Date Fair Value Weighted-Average Exercise Price Non-qualified stock options 722,695 $ 62.55 $ 249.56 Restricted stock units 2,895,667 $ 251.21 Performance-based shares (1) 528,008 $ 281.85 (1) Represents the maximum number of performance-based shares which could be earned. For the three months ended March 31, 2024 and 2023, the Company recorded share-based compensation cost related to the EIP of $235 million and $214 million, respectively. For the six months ended March 31, 2024 and 2023, the Company recorded share-based compensation cost related to the EIP of $435 million and $384 million, respectively.

Income Taxes

Income Taxes	6 Months Ended
	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Note 12—Income Taxes For the three and six months ended March 31, 2024, the effective income tax rates were 15% and 17%, respectively, and for the three and six months ended March 31, 2023, the effective income tax rates were 19% and 18%, respectively. The difference in the effective tax rates is primarily due to the following: • During the three and six months ended March 31, 2024, a $184 million tax benefit as a result of the conclusion of an audit; and • During the six months ended March 31, 2023, a $142 million tax benefit due to the reassessment of an uncertain tax position as a result of new information obtained during an ongoing tax examination. During the three and six months ended March 31, 2024, the Company’s gross unrecognized tax benefits decreased by $117 million and $4 million, respectively, and the Company’s net unrecognized tax benefits decreased by $159 million and $130 million, respectively. The change in unrecognized tax benefits is primarily due to the recognition of previously unrecognized tax benefits as a result of the conclusion of an audit, partially offset by an increase in gross timing differences as well as various tax positions across several jurisdictions. During the three and six months ended March 31, 2024, the Company’s accrued interest related to uncertain tax positions decreased by $72 million and $51 million, respectively. During the three and six months ended March 31, 2023, there were no significant changes in accrued interest related to uncertain tax positions. In January 2024, a resolution was reached regarding India tax assessments for taxable years falling within the period from 2010 to 2019. As a result, the Company withdrew its appeals to the appellate authorities for these years. Effective through September 30, 2028, the Company’s operating hub in the Asia Pacific region is subject to a tax incentive in Singapore which is conditional upon meeting certain requirements. The Company’s tax filings are subject to examination by U.S. federal, state and foreign taxing authorities. The timing and outcome of the final resolutions of the various ongoing income tax examinations and refund claims are uncertain. It is not reasonably possible to estimate the increase or decrease in unrecognized tax benefits within the next 12 months.

Legal Matters

Legal Matters	6 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Legal Matters	Note 13—Legal Matters The Company is party to various legal and regulatory proceedings. Some of these proceedings involve complex claims that are subject to substantial uncertainties and unascertainable damages. For those proceedings where a loss is determined to be only reasonably possible or probable but not estimable, the Company has disclosed the nature of the claim. Additionally, unless otherwise disclosed below with respect to these proceedings, the Company cannot provide an estimate of the possible loss or range of loss. Although the Company believes that it has strong defenses for the litigation and regulatory proceedings described below, it could, in the future, incur judgments or fines or enter into settlements of claims that could have a material adverse effect on the Company’s financial position, results of operations or cash flows. From time to time, the Company may engage in settlement discussions or mediations with respect to one or more of its outstanding litigation matters, either on its own behalf or collectively with other parties. The litigation accrual is an estimate and is based on management’s understanding of its litigation profile, the specifics of each case, advice of counsel to the extent appropriate and management’s best estimate of incurred loss as of the balance sheet date. The following table summarizes the activity related to accrued litigation: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 1,751 $ 1,456 Provision for uncovered legal matters 310 — Provision for covered legal matters 175 352 Payments for legal matters (383) (206) Balance as of end of period $ 1,853 $ 1,602 Accrual Summary—U.S. Covered Litigation Visa Inc., Visa U.S.A. and Visa International are parties to certain legal proceedings that are covered by the U.S. retrospective responsibility plan, which the Company refers to as the U.S. covered litigation. An accrual for the U.S. covered litigation and a charge to the litigation provision are recorded when a loss is deemed to be probable and reasonably estimable. In making this determination, the Company evaluates available information, including but not limited to actions taken by the Company’s litigation committee. The total accrual related to the U.S. covered litigation could be either higher or lower than the escrow account balance. See further discussion below under U.S. Covered Litigation and Note 5—U.S. and Europe Retrospective Responsibility Plans. The following table summarizes the accrual activity related to U.S. covered litigation: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 1,621 $ 1,441 Provision for interchange multidistrict litigation 129 341 Payments for U.S. covered litigation (204) (201) Balance as of end of period $ 1,546 $ 1,581 During the three and six months ended March 31, 2024, the Company recorded an additional accrual pursuant to the agreement to resolve the Injunctive Relief Class claims in the interchange multidistrict litigation. The accrual balance is consistent with the Company’s best estimate of its share of a probable and reasonably estimable loss with respect to the U.S. covered litigation. While this estimate is consistent with the Company’s view of the current status of the litigation, the probable and reasonably estimable loss or range of such loss could materially vary based on developments in the litigation. The Company will continue to consider and reevaluate this estimate in light of the substantial uncertainties with respect to the litigation. The Company is unable to estimate a potential loss or range of loss, if any, at trial if negotiated resolutions cannot be reached. Accrual Summary—VE Territory Covered Litigation Visa Inc., Visa International and Visa Europe are parties to certain legal proceedings that are covered by the Europe retrospective responsibility plan. Unlike the U.S. retrospective responsibility plan, the Europe retrospective responsibility plan does not have an escrow account that is used to fund settlements or judgments. The Company is entitled to recover VE territory covered losses through periodic adjustments to the conversion rates applicable to the series B and C preferred stock. An accrual for the VE territory covered losses and a reduction to stockholders’ equity will be recorded when the loss is deemed to be probable and reasonably estimable. See further discussion below under VE Territory Covered Litigation and Note 5—U.S. and Europe Retrospective Responsibility Plans . The following table summarizes the accrual activity related to VE territory covered litigation: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 110 $ 11 Provision for VE territory covered litigation 46 11 Payments for VE territory covered litigation (144) (5) Balance as of end of period $ 12 $ 17 U.S. Covered Litigation Interchange Multidistrict Litigation (MDL) - Class Actions On December 4, 2023, plaintiffs in the two actions led, respectively, by Hayley Lanning and Camp Grounds Coffee, served a motion for partial summary judgment. On January 8, 2024, defendants’ motions for summary judgment under Ohio v. American Express were granted in part and denied in part. On February 22, 2024, the district court denied defendants' motions for summary judgment based on the post-IPO conspiracy claims. On February 26, 2024, plaintiffs in the action led by Old Jericho Enterprise, Inc. served a motion for partial summary judgment. On March 11, 2024, the district court denied the Injunctive Relief Class plaintiffs’ motion for partial summary judgment. On April 2, 2024, the district court granted defendants’ motion for summary judgment on Injunctive Relief Class plaintiffs’ monopolization claims. On March 25, 2024, Visa and Mastercard entered into an agreement to resolve the Injunctive Relief Class claims (the “Settlement Agreement”), subject to court approval. The Settlement Agreement includes, among other terms, (i) a release from class members for claims for declaratory, injunctive or equitable relief arising out of conduct alleged by the Injunctive Relief Class in the litigation that have accrued or accrue in the future during the term of the Settlement Agreement; (ii) provisions requiring reductions and caps on U.S. credit interchange rates; and (iii) provisions requiring modifications to the Company’s rules in the U.S. that, among other things, streamline requirements for merchants who wish to impose a surcharge on credit transactions. On March 26, 2024, the Injunctive Relief Class plaintiffs filed a motion for preliminary approval of the settlement. Interchange Multidistrict Litigation (MDL) - Individual Merchant Actions Visa has reached settlements with a number of merchants representing approximately 73% of the Visa-branded payment card sales volume of merchants who opted out of the Amended Settlement Agreement with the Damages Class plaintiffs. On November 1, 2023, defendants served a motion to enforce the Amended Settlement Agreement, or in the alternative for summary judgment, regarding claims in the actions brought by certain plaintiffs in their capacity as payment facilitators. On December 4, 2023, plaintiffs in certain of the individual merchant actions served a motion for partial summary judgment or a joinder in partial summary judgment motions. On January 8, 2024, defendants’ motions for summary judgment under Ohio v. American Express were granted in part and denied in part. On February 22, 2024, the district court denied defendants' motions for summary judgment based on Illinois Brick standing and on the post-IPO conspiracy claims, and denied as moot certain plaintiffs’ motions for partial summary judgment. On April 2, 2024, the district court granted in part and denied in part defendants’ motion for summary judgment on certain plaintiffs’ monopolization claims. Consumer Interchange Litigation On February 9, 2024, defendants filed a motion to dismiss the complaint and to compel arbitration. VE Territory Covered Litigation Europe Merchant Litigation Since July 2013, proceedings have been commenced by more than 1,150 Merchants (the capitalized term “Merchant” when used in this section, means a Merchant together with subsidiary/affiliate companies that are party to the same claim) against Visa Europe, Visa Inc. and other Visa subsidiaries in the UK and other countries primarily relating to interchange rates in Europe and in some cases relating to fees charged by Visa and certain Visa rules. As of the filing date, Visa has settled the claims asserted by over 475 Merchants, and there are approximately 600 Merchants with outstanding claims. In addition, 30 additional Merchants have threatened to commence similar proceedings. Standstill agreements have been entered into with respect to some of those threatened Merchant claims, several of which have been settled. From February 14 to March 28, 2024, a trial occurred to consider whether certain interchange rates restrict competition in violation of UK antitrust law. In the class action claims filed before the UK Competition Appeal Tribunal, a class certification rehearing took place in April 2024. Other Litigation MiCamp Solutions On December 8, 2023, a complaint was filed in the U.S. District Court for the Northern District of California by MiCamp Solutions, LLC against Visa on behalf of a purported class of Independent Sales Organizations (ISOs) and their merchant customers and a purported subclass of ISOs. The complaint alleges violations of federal and state antitrust laws, state data privacy laws, and the constitution, based on, among other things, Visa’s interchange fees and its assessment of fees for non-compliance with its surcharge rules. The complaint seeks to recover damages and to enjoin the enforcement of Visa’s default interchange and surcharge rules, among other things. On March 5, 2024, MiCamp Solutions filed an amended complaint on behalf of the same purported class and subclass, and containing similar allegations as in the original complaint, and on March 19, 2024, Visa filed a motion to dismiss that amended complaint. Mirage Wine + Spirit’s Inc. On December 14, 2023, a putative class action was filed in the U.S. District Court for the Southern District of Illinois by Mirage Wine + Spirit’s Inc. against Apple Inc., Visa Inc. and Mastercard Incorporated on behalf of certain merchants in the United States that accepted Apple Pay as a method of payment at the physical point-of-sale from December 14, 2019. Plaintiff alleges a conspiracy under which Apple agreed not to enter a purported market for point-of-sale payment card networks services and seeks damages, injunctive relief and attorneys’ fees based on alleged violations of section 1 of the Sherman Act. On January 5, 2024, Visa requested transfer of the action to the U.S. District Court for the Eastern District of New York for coordinated or consolidated pretrial proceedings with the MDL. On February 2, 2024, the Judicial Panel on Multidistrict Litigation entered a conditional transfer order conditionally transferring the case to the MDL. On February 26, 2024, plaintiffs filed a motion to vacate the conditional transfer order.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 4,663	$ 4,257	$ 9,553	$ 8,436

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	6 Months Ended
	Mar. 31, 2024 shares	Mar. 31, 2024 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Paul D. Fabara [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On February 13, 2024, Paul D. Fabara, our Chief Risk Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of (i) an aggregate of up to 25,293 shares of our class A common stock and (ii) an aggregate of up to 4,660 shares of our class A common stock upon the vesting of time-based restricted stock units in November 2024. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until April 30, 2025 or earlier if all transactions under the trading arrangement are completed.
Name	Paul D. Fabara
Title	Chief Risk Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	February 13, 2024
Arrangement Duration	442 days
Paul D. Fabara, Trading Arrangement, Class A Common Stock [Member] | Paul D. Fabara [Member]
Trading Arrangements, by Individual
Aggregate Available	25,293	25,293
Paul D. Fabara, Trading Arrangement, Class A Common Stock, Time-Based Restricted Stock [Member] | Paul D. Fabara [Member]
Trading Arrangements, by Individual
Aggregate Available	4,660	4,660

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Consolidation and basis of presentation	Consolidation and basis of presentation. The accompanying unaudited consolidated financial statements include the accounts of Visa and its consolidated entities and are presented in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP). The Company consolidates its majority-owned and controlled entities, including variable interest entities (VIEs) for which the Company is the primary beneficiary. The Company’s investments in VIEs have not been material to its unaudited consolidated financial statements as of and for the periods presented. Intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited consolidated financial statements are presented in accordance with the U.S. Securities and Exchange Commission (SEC) requirements for Quarterly Reports on Form 10-Q and, consequently, do not include all of the annual disclosures required by U.S. GAAP. Reference should be made to Visa’s Annual Report on Form 10-K for the year ended September 30, 2023 for additional disclosures, including a summary of the Company’s significant accounting policies. In the opinion of management, the accompanying unaudited consolidated financial statements include all normal recurring adjustments necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results of operations for interim periods are not necessarily indicative of results for the full year.
Use of estimates	Use of estimates. The preparation of the accompanying unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions about future events. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited consolidated financial statements and reported amounts of revenue and expenses during the reporting period. These estimates may change as new events occur and additional information is obtained, and will be recognized in the period in which such changes occur. Future actual results could differ materially from these estimates.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables disaggregate the Company’s net revenue by revenue category and by geography: Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions) Service revenue $ 4,033 $ 3,771 $ 7,948 $ 7,282 Data processing revenue 4,259 3,819 8,615 7,646 International transaction revenue 2,984 2,749 6,003 5,546 Other revenue 756 551 1,448 1,138 Client incentives (3,257) (2,905) (6,605) (5,691) Net revenue $ 8,775 $ 7,985 $ 17,409 $ 15,921 Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions) U.S. $ 3,643 $ 3,540 $ 7,288 $ 7,107 International 5,132 4,445 10,121 8,814 Net revenue $ 8,775 $ 7,985 $ 17,409 $ 15,921

Cash, Cash Equivalents, Restr_2

Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents (Tables)	6 Months Ended
	Mar. 31, 2024
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]
Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	The Company reconciles cash, cash equivalents, restricted cash and restricted cash equivalents reported on the consolidated balance sheets that aggregate to the beginning and ending balances shown in the consolidated statements of cash flows as follows: March 31, September 30, (in millions) Cash and cash equivalents $ 12,993 $ 16,286 Restricted cash and restricted cash equivalents: U.S. litigation escrow 1,584 1,764 Customer collateral 3,367 3,005 Prepaid expenses and other current assets 1,004 935 Cash, cash equivalents, restricted cash and restricted cash equivalents $ 18,948 $ 21,990

U.S. and Europe Retrospective_2

U.S. and Europe Retrospective Responsibility Plans (Tables)	6 Months Ended
	Mar. 31, 2024
Retrospective Responsibility Plans [Abstract]
Changes in the U.S. litigation escrow account	The following table presents the changes in the restricted cash equivalents—U.S. litigation escrow account: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 1,764 $ 1,449 Deposits into the U.S. litigation escrow account — 350 Payments to opt-out merchants (1) , net of interest earned on escrow funds (180) (183) Balance as of end of period $ 1,584 $ 1,616 (1) These payments are associated with the interchange multidistrict litigation. See Note 13—Legal Matters .
Changes in Preferred Stock and Right to Recover for Covered Losses	The following table presents the activities related to VE territory covered losses in preferred stock and right to recover for covered losses within stockholders’ equity: Six Months Ended Preferred Stock Right to Recover for Covered Losses Series B Series C (in millions) Balance as of beginning of period $ 441 $ 801 $ (140) VE territory covered losses incurred (1) — — (60) Recovery through conversion rate adjustment (22) (3) 25 Balance as of end of period $ 419 $ 798 $ (175) Six Months Ended Preferred Stock Right to Recover for Covered Losses Series B Series C (in millions) Balance as of beginning of period $ 460 $ 812 $ (35) VE territory covered losses incurred (1) — — (15) Recovery through conversion rate adjustment (2) (7) (7) 15 Balance as of end of period $ 453 $ 805 $ (35) (1) VE territory covered losses incurred reflect settlements with merchants and additional legal costs. See Note 13—Legal Matters . (2)
Preferred Stock As-Converted Value and Book Value	The following table presents the as-converted value of the preferred stock available to recover VE territory covered losses compared to the book value of preferred stock recorded within the Company’s consolidated balance sheets: March 31, 2024 September 30, 2023 As-converted Value of Preferred Stock (1),(2) Book Value of Preferred Stock (1) As-converted Value of Preferred Stock (1),(3) Book Value of Preferred Stock (1) (in millions) Series B preferred stock $ 2,010 $ 419 $ 1,676 $ 441 Series C preferred stock 3,194 798 2,635 801 Total 5,204 1,217 4,311 1,242 Less: right to recover for covered losses (175) (175) (140) (140) Total recovery for covered losses available $ 5,029 $ 1,042 $ 4,171 $ 1,102 (1) Figures in the table may not recalculate exactly due to rounding. As-converted and book values are based on unrounded numbers. (2) As of March 31, 2024, the as-converted value of preferred stock is calculated as the product of: (a) 2 million and 3 million shares of the series B and C preferred stock outstanding, respectively; (b) 2.903 and 3.625, the class A common stock conversion rate applicable to the series B and C preferred stock outstanding, respectively; and (c) $279.08, Visa’s class A common stock closing stock price. (3) As of September 30, 2023, the as-converted value of preferred stock is calculated as the product of: (a) 2 million and 3 million shares of the series B and C preferred stock outstanding, respectively; (b) 2.937 and 3.629, the class A common stock conversion rate applicable to the series B and C preferred stock outstanding, respectively; and (c) $230.01, Visa’s class A common stock closing stock price.

Fair Value Measurements and I_2

Fair Value Measurements and Investments (Tables)	6 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value Measurements Level 1 Level 2 March 31, September 30, March 31, September 30, (in millions) Assets Cash equivalents and restricted cash equivalents: Money market funds $ 9,050 $ 13,504 $ — $ — U.S. Treasury securities 834 301 — — Investment securities: Marketable equity securities 374 339 — — U.S. government-sponsored debt securities — — 1,510 1,108 U.S. Treasury securities 5,918 4,316 — — Other current and non-current assets: Money market funds 29 23 — — Derivative instruments — — 210 293 Total $ 16,205 $ 18,483 $ 1,720 $ 1,401 Liabilities Accrued compensation and benefits: Deferred compensation liability $ 223 $ 175 $ — $ — Accrued and other liabilities: Derivative instruments — — 278 396 Total $ 223 $ 175 $ 278 $ 396
Schedule of Amortized Cost, Unrealized Gains and Losses, and Fair Value of Debt Securities	The amortized cost, unrealized gains and losses and fair value of debt securities were as follows: March 31, 2024 Amortized Gross Unrealized Fair Gains Losses (in millions) U.S. government-sponsored debt securities $ 1,511 $ — $ (1) $ 1,510 U.S. Treasury securities 6,782 4 (34) 6,752 Total $ 8,293 $ 4 $ (35) $ 8,262 September 30, 2023 Amortized Gross Unrealized Fair Gains Losses (in millions) U.S. government-sponsored debt securities $ 1,109 $ 1 $ (2) $ 1,108 U.S. Treasury securities 4,697 — (80) 4,617 Total $ 5,806 $ 1 $ (82) $ 5,725 Debt securities with unrealized losses for less than 12 months and 12 months or greater were as follows: March 31, 2024 Less Than 12 Months 12 Months or Greater Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) U.S. government-sponsored debt securities $ 1,282 $ (1) $ — $ — U.S. Treasury securities 2,789 (6) 1,870 (28) Total $ 4,071 $ (7) $ 1,870 $ (28) September 30, 2023 Less Than 12 Months 12 Months or Greater Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) U.S. government-sponsored debt securities $ 412 $ (2) $ 50 $ — U.S. Treasury securities 1,360 (12) 2,128 (68) Total $ 1,772 $ (14) $ 2,178 $ (68)
Debt Securities Classified by Contractual Maturity Date	The stated maturities of debt securities were as follows: March 31, (in millions) Due within one year $ 5,170 Due after one year through five years 3,092 Total $ 8,262
Schedule of Non-Marketable Equity Securities	The following table summarizes the Company’s non-marketable equity securities held as of period end that were accounted for using the fair value measurement alternative: March 31, (in millions) Initial cost basis $ 710 Adjustments: Upward adjustments 909 Downward adjustments (including impairment) (445) Carrying amount $ 1,174 Unrealized gains and losses of the Company’s non-marketable equity securities held as of period end that were accounted for using the fair value measurement alternative were as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions) Upward adjustments $ — $ 2 $ 9 $ 19 Downward adjustments (including impairment) $ (15) $ (89) $ (15) $ (89)

Debt (Tables)

Debt (Tables)	6 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Schedule of Debt	The Company had outstanding debt as follows: March 31, September 30, Effective Interest Rate (1) (in millions, except percentages) U.S. dollar notes 3.15% Senior Notes due December 2025 $ 4,000 $ 4,000 3.26 % 1.90% Senior Notes due April 2027 1,500 1,500 2.02 % 0.75% Senior Notes due August 2027 500 500 0.84 % 2.75% Senior Notes due September 2027 750 750 2.91 % 2.05% Senior Notes due April 2030 1,500 1,500 2.13 % 1.10% Senior Notes due February 2031 1,000 1,000 1.20 % 4.15% Senior Notes due December 2035 1,500 1,500 4.23 % 2.70% Senior Notes due April 2040 1,000 1,000 2.80 % 4.30% Senior Notes due December 2045 3,500 3,500 4.37 % 3.65% Senior Notes due September 2047 750 750 3.73 % 2.00% Senior Notes due August 2050 1,750 1,750 2.09 % Euro notes 1.50% Senior Notes due June 2026 1,459 1,434 1.71 % 2.00% Senior Notes due June 2029 1,081 1,062 2.13 % 2.375% Senior Notes due June 2034 702 690 2.53 % Total debt 20,992 20,936 Unamortized discounts and debt issuance costs (151) (159) Hedge accounting fair value adjustments (2) (238) (314) Total carrying value of debt $ 20,603 $ 20,463 Reported as: Current maturities of debt $ — $ — Long-term debt 20,603 20,463 Total carrying value of debt $ 20,603 $ 20,463 (1) Effective interest rates disclosed do not reflect hedge accounting adjustments. (2) Represents the fair value of interest rate swap agreements entered into on a portion of the outstanding senior notes.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Schedule of Stock by Class	As-converted class A common stock. The number of shares of each series and class, and the number of shares of class A common stock on an as-converted basis were as follows: March 31, 2024 September 30, 2023 Shares Conversion Rate Into As-converted Class A Common Stock (1) Shares Conversion Rate Into As-converted Class A Common Stock (1) (in millions, except conversion rate) Series A preferred stock — (2) 100.0000 6 — (2) 100.0000 7 Series B preferred stock 2 2.9030 7 2 2.9370 7 Series C preferred stock 3 3.6250 11 3 3.6290 11 Class A common stock 1,574 — 1,574 1,594 — 1,594 Class B-1 common stock 245 1.5875 (3) 390 245 1.5875 (3) 390 Class C common stock 9 4.0000 37 10 4.0000 38 Total 2,025 2,047 (1) Figures in the table may not recalculate exactly due to rounding. As-converted class A common stock is calculated based on unrounded numbers. (2) The number of shares outstanding was less than one million. (3) The class B-1 to class A common stock conversion rate is presented on a rounded basis. Conversion calculations for dividend payments are based on a conversion rate rounded to the tenth decimal.
Effect of U.S. Retrospective Responsibility Plan on the Company Class Common B As-Converted Shares	The following table presents the reduction in the number of as-converted class B-1 common stock after deposits into the U.S. litigation escrow account under the U.S. retrospective responsibility plan: Six Months Ended 2024 2023 (in millions, except per share data) Reduction in equivalent number of class A common stock — 2 Effective price per share (1) $ — $ 209.14 Deposits into the U.S. litigation escrow account $ — $ 350 (1) Effective price per share for each adjustment is calculated using the volume-weighted average price of the Company’s class A common stock over a pricing period in accordance with the Company’s current certificate of incorporation.
Effect of VE Territory Covered Losses Recovery on the Company Repurchasing its Common Stock	The following table presents the reduction in the number of as-converted series B and C preferred stock after the Company recovered VE territory covered losses through conversion rate adjustments under the Europe retrospective responsibility plan: Six Months Ended Six Months Ended Series B Series C Series B Series C (in millions, except per share data) Reduction in equivalent number of class A common stock — (1) — (1) — (1) — (1) Effective price per share (2) $ 254.32 $ 254.32 $ 211.34 $ 211.34 Recovery through conversion rate adjustment $ 22 $ 3 $ 7 $ 7 (1) The reduction in equivalent number of shares of class A common stock was less than one million shares. (2) Effective price per share for each adjustment is calculated using the volume-weighted average price of the Company’s class A common stock over a pricing period in accordance with the Company’s current certificates of designations for its series B and C preferred stock.
Share Repurchase Program Disclosure	Common stock repurchases. The following table presents share repurchases in the open market: Three Months Ended Six Months Ended 2024 2023 2024 2023 (in millions, except per share data) Shares repurchased in the open market (1) 10 10 25 26 Average repurchase cost per share (2) $ 280.41 $ 221.32 $ 255.09 $ 206.88 Total cost (2) $ 2,784 $ 2,216 $ 6,393 $ 5,331 (1) Shares repurchased in the open market reflect repurchases that settled during the three and six months ended March 31, 2024 and 2023. All shares repurchased in the open market have been retired and constitute authorized but unissued shares. (2) Figures in the table may not recalculate exactly due to rounding. Average repurchase cost per share and total cost are calculated based on unrounded numbers and include applicable taxes.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents earnings per share for the three months ended March 31, 2024: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 3,616 1,579 $ 2.29 $ 4,663 2,039 (3) $ 2.29 Class B-1 common stock 892 245 $ 3.63 $ 891 245 $ 3.63 Class C common stock 85 9 $ 9.16 $ 85 9 $ 9.15 Participating securities 70 Not presented Not presented $ 70 Not presented Not presented Net income $ 4,663 The following table presents earnings per share for the six months ended March 31, 2024: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 7,408 1,582 $ 4.68 $ 9,553 2,042 (3) $ 4.68 Class B-1 common stock 1,825 245 $ 7.44 $ 1,823 245 $ 7.43 Class C common stock 176 9 $ 18.73 $ 176 9 $ 18.71 Participating securities 144 Not presented Not presented $ 144 Not presented Not presented Net income $ 9,553 The following table presents earnings per share for the three months ended March 31, 2023: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 3,307 1,624 $ 2.04 $ 4,257 2,093 (3) $ 2.03 Class B-1 common stock 800 245 $ 3.26 $ 799 245 $ 3.25 Class C common stock 79 10 $ 8.15 $ 79 10 $ 8.14 Participating securities 71 Not presented Not presented $ 71 Not presented Not presented Net income $ 4,257 The following table presents earnings per share for the six months ended March 31, 2023: Basic Earnings Per Share Diluted Earnings Per Share Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) Income Allocation (A) (1) Weighted- Earnings per Share = (A)/(B) (2) (in millions, except per share data) Class A common stock $ 6,549 1,627 $ 4.03 $ 8,436 2,098 (3) $ 4.02 Class B-1 common stock 1,584 245 $ 6.45 $ 1,582 245 $ 6.44 Class C common stock 157 10 $ 16.10 $ 156 10 $ 16.09 Participating securities 146 Not presented Not presented $ 146 Not presented Not presented Net income $ 8,436 (1) The weighted-average number of shares of as-converted class B-1 common stock used in the income allocation was 390 million for the three and six months ended March 31, 2024 and 393 million for the three and six months ended March 31, 2023. The weighted-average number of shares of as-converted class C common stock used in the income allocation was 37 million and 38 million for the three and six months ended March 31, 2024, respectively, and 39 million for the three and six months ended March 31, 2023. The weighted-average number of shares of preferred stock included within participating securities was 6 million of as-converted series A preferred stock for the three and six months ended March 31, 2024 and 10 million and 11 million of as-converted series A preferred stock for the three and six months ended March 31, 2023, respectively, 7 million of as-converted series B preferred stock for the three and six months ended March 31, 2024 and 2023, and 11 million of as-converted series C preferred stock for the three and six months ended March 31, 2024 and 2023. (2) Figures in the table may not recalculate exactly due to rounding. Basic and diluted earnings per share are calculated based on unrounded numbers. (3) Weighted-average diluted shares outstanding are calculated on an as-converted basis and include incremental common stock equivalents, as calculated under the treasury stock method. The common stock equivalents are not material for the three and six months ended March 31, 2024 and 2023.

Share-based Compensation (Table

Share-based Compensation (Tables)	6 Months Ended
	Mar. 31, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	The following table presents the equity awards granted to employees and non-employee directors under the amended and restated 2007 Equity Incentive Compensation Plan (EIP) during the six months ended March 31, 2024: Granted Weighted-Average Grant Date Fair Value Weighted-Average Exercise Price Non-qualified stock options 722,695 $ 62.55 $ 249.56 Restricted stock units 2,895,667 $ 251.21 Performance-based shares (1) 528,008 $ 281.85 (1) Represents the maximum number of performance-based shares which could be earned.

Legal Matters (Tables)

Legal Matters (Tables)	6 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Loss Contingencies by Contingency	The following table summarizes the activity related to accrued litigation: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 1,751 $ 1,456 Provision for uncovered legal matters 310 — Provision for covered legal matters 175 352 Payments for legal matters (383) (206) Balance as of end of period $ 1,853 $ 1,602 The following table summarizes the accrual activity related to U.S. covered litigation: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 1,621 $ 1,441 Provision for interchange multidistrict litigation 129 341 Payments for U.S. covered litigation (204) (201) Balance as of end of period $ 1,546 $ 1,581 The following table summarizes the accrual activity related to VE territory covered litigation: Six Months Ended 2024 2023 (in millions) Balance as of beginning of period $ 110 $ 11 Provision for VE territory covered litigation 46 11 Payments for VE territory covered litigation (144) (5) Balance as of end of period $ 12 $ 17

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details)	Mar. 31, 2024 country
Accounting Policies [Abstract]
Number of countries in which Visa operates (more than)	200

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Millions	Jan. 16, 2024	Mar. 31, 2024	Sep. 30, 2023
Business Acquisition [Line Items]
Goodwill		$ 18,837	$ 17,997
Pismo Holdings
Business Acquisition [Line Items]
Total consideration	$ 929
Amount allocated to technology, intangible assets, other net assets acquired and deferred tax liabilities	139
Goodwill	$ 790

Revenue - Schedule of Net Reven

Revenue - Schedule of Net Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Net revenue	$ 8,775	$ 7,985	$ 17,409	$ 15,921
U.S.
Disaggregation of Revenue [Line Items]
Net revenue	3,643	3,540	7,288	7,107
International
Disaggregation of Revenue [Line Items]
Net revenue	5,132	4,445	10,121	8,814
Service revenue
Disaggregation of Revenue [Line Items]
Net revenue	4,033	3,771	7,948	7,282
Data processing revenue
Disaggregation of Revenue [Line Items]
Net revenue	4,259	3,819	8,615	7,646
International transaction revenue
Disaggregation of Revenue [Line Items]
Net revenue	2,984	2,749	6,003	5,546
Other revenue
Disaggregation of Revenue [Line Items]
Net revenue	756	551	1,448	1,138
Client incentives
Disaggregation of Revenue [Line Items]
Net revenue	$ (3,257)	$ (2,905)	$ (6,605)	$ (5,691)

Revenue - Additional Informatio

Revenue - Additional Information (Details) $ in Billions	Mar. 31, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 3.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period (in years)	2 years
Revenue, remaining performance obligation (in percent)	50%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period (in years)
Revenue, remaining performance obligation (in percent)	50%

Cash, Cash Equivalents, Restr_3

Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 12,993	$ 16,286
Cash, cash equivalents, restricted cash and restricted cash equivalents	18,948	21,990	$ 19,128	$ 20,377
U.S. litigation escrow
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and restricted cash equivalents:	1,584	1,764
Customer collateral
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and restricted cash equivalents:	3,367	3,005
Prepaid expenses and other current assets
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and restricted cash equivalents:	$ 1,004	$ 935

U.S. and Europe Retrospective_3

U.S. and Europe Retrospective Responsibility Plans - Changes in the U.S. Litigation Escrow Account (Detail) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Escrow Account [Roll Forward]
Balance as of beginning of period	$ 1,764	$ 1,449
Deposits into the U.S. litigation escrow account	0	350
Balance as of end of period	1,584	1,616
Interest Income | Opt-out Merchants
Escrow Account [Roll Forward]
Payments to opt-out merchants, net of interest earned on escrow funds	$ (180)	$ (183)

U.S. and Europe Retrospective_4

U.S. and Europe Retrospective Responsibility Plans - Additional Details (Details) € in Millions	6 Months Ended
	Mar. 31, 2024 EUR (€)
Retrospective Responsibility Plans [Abstract]
VE covered loss, maximum amount of loss to allow adjustment of conversion rate during six-month period	€ 20

U.S. and Europe Retrospective_5

U.S. and Europe Retrospective Responsibility Plans - Changes in Preferred Stock and Right to Recover Covered Losses (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				6 Months Ended
	Mar. 31, 2024 USD ($) $ / shares shares		Mar. 31, 2023 USD ($) shares		Mar. 31, 2024 USD ($) $ / shares shares		Mar. 31, 2023 USD ($) shares		Dec. 31, 2023 shares	Sep. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 shares	Sep. 30, 2022 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of beginning of period	$ 39,733		$ 36,924		$ 38,733		$ 35,581
VE territory covered losses incurred	(36)		(7)		(60)		(15)
Recovery through conversion rate adjustment					0		1
Balance as of end of period	40,485		38,565		40,485		38,565
As-converted Value of Preferred Stock	5,204				5,204					$ 4,311
Book Value of Preferred Stock	1,602				1,602					1,698
Book Value of Preferred Stock, Total	1,217				1,217					1,242
Less: right to recover for covered losses	(175)				(175)					(140)
As-converted Value of Preferred Stock, Total recovery for covered losses available	5,029				5,029					4,171
Book Value of Preferred of Stock, Total recovery for covered losses available	$ 1,042				$ 1,042					$ 1,102
Preferred stock, shares outstanding (in shares) | shares	5				5					5
Share price (in dollars per share) | $ / shares	$ 279.08				$ 279.08					$ 230.01
Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of beginning of period	$ 1,615		1,981		$ 1,698	[1]	2,324	[2]
Recovery through conversion rate adjustment					(25)		(14)
Balance as of end of period	$ 1,602	[1]	$ 1,885	[2]	$ 1,602	[1]	$ 1,885	[2]
Preferred stock, shares outstanding (in shares) | shares	5		5		5		5		5	5	5	5
Right to Recover for Covered Losses
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of beginning of period	$ (139)		$ (28)		$ (140)		$ (35)
VE territory covered losses incurred	(36)		(7)		(60)		(15)
Recovery through conversion rate adjustment					25		15
Balance as of end of period	(175)		(35)		(175)		(35)
Series B preferred stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Recovery through conversion rate adjustment					22		7
As-converted Value of Preferred Stock	2,010				2,010					$ 1,676
Book Value of Preferred Stock	$ 419				$ 419					$ 441
Preferred stock, shares outstanding (in shares) | shares	2				2					2
Preferred stock, conversion rate	2.9030				2.9030					2.9370
Series B preferred stock | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of beginning of period					$ 441		460
VE territory covered losses incurred					0		0
Recovery through conversion rate adjustment					(22)		(7)
Balance as of end of period	$ 419		453		419		453
Series C preferred stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Recovery through conversion rate adjustment					3		7
As-converted Value of Preferred Stock	3,194				3,194					$ 2,635
Book Value of Preferred Stock	$ 798				$ 798					$ 801
Preferred stock, shares outstanding (in shares) | shares	3				3					3
Preferred stock, conversion rate	3.6250				3.6250					3.6290
Series C preferred stock | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of beginning of period					$ 801		812
VE territory covered losses incurred					0		0
Recovery through conversion rate adjustment					(3)		(7)
Balance as of end of period	$ 798		$ 805		$ 798		$ 805
[1] As of March 31, 2024 and September 30, 2023, the book value of series A preferred stock was $385 million and $456 million, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans As of March 31, 2023 and September 30, 2022, the book value of series A preferred stock was $627 million and $1.0 billion, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans for the book value of series B and series C preferred stock.

Fair Value Measurements and I_3

Fair Value Measurements and Investments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Assets
Investment securities	$ 8,262	$ 5,725
Level 1 | Recurring
Assets
Total	16,205	18,483
Liabilities
Total	223	175
Level 1 | Recurring | Deferred compensation liability
Liabilities
Deferred compensation liability	223	175
Level 1 | Recurring | Derivative instruments
Liabilities
Derivative instruments	0	0
Level 1 | Money market funds | Recurring
Assets
Cash equivalents and restricted cash equivalents:	9,050	13,504
Other current and non-current assets:	29	23
Level 1 | U.S. government-sponsored debt securities | Recurring
Assets
Investment securities	0	0
Level 1 | U.S. Treasury securities | Recurring
Assets
Cash equivalents and restricted cash equivalents:	834	301
Investment securities	5,918	4,316
Level 1 | Marketable equity securities | Recurring
Assets
Marketable equity securities	374	339
Level 1 | Derivative instruments | Recurring
Assets
Other current and non-current assets:	0	0
Level 2 | Recurring
Assets
Total	1,720	1,401
Liabilities
Total	278	396
Level 2 | Recurring | Deferred compensation liability
Liabilities
Deferred compensation liability	0	0
Level 2 | Recurring | Derivative instruments
Liabilities
Derivative instruments	278	396
Level 2 | Money market funds | Recurring
Assets
Cash equivalents and restricted cash equivalents:	0	0
Other current and non-current assets:	0	0
Level 2 | U.S. government-sponsored debt securities | Recurring
Assets
Investment securities	1,510	1,108
Level 2 | U.S. Treasury securities | Recurring
Assets
Cash equivalents and restricted cash equivalents:	0	0
Investment securities	0	0
Level 2 | Marketable equity securities | Recurring
Assets
Marketable equity securities	0	0
Level 2 | Derivative instruments | Recurring
Assets
Other current and non-current assets:	$ 210	$ 293

Fair Value Measurements and I_4

Fair Value Measurements and Investments - Amortized Cost, Unrealized Gains and Losses, and Fair Value of Available-for-Sale Securities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 8,293	$ 5,806
Gross Unrealized Gains	4	1
Gross Unrealized Losses	(35)	(82)
Fair Value	8,262	5,725
U.S. government-sponsored debt securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	1,511	1,109
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(1)	(2)
Fair Value	1,510	1,108
U.S. Treasury securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	6,782	4,697
Gross Unrealized Gains	4	0
Gross Unrealized Losses	(34)	(80)
Fair Value	$ 6,752	$ 4,617

Fair Value Measurements and I_5

Fair Value Measurements and Investments - Continuous Unrealized Losses for Less than 12 Months and More than 12 Months (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Debt Securities, Available-for-Sale [Line Items]
Less Than 12 Months, Fair Value	$ 4,071	$ 1,772
Less Than 12 Months, Gross Unrealized Losses	(7)	(14)
12 Months or Greater, Fair Value	1,870	2,178
12 Months or Greater, Gross Unrealized Losses	(28)	(68)
U.S. government-sponsored debt securities
Debt Securities, Available-for-Sale [Line Items]
Less Than 12 Months, Fair Value	1,282	412
Less Than 12 Months, Gross Unrealized Losses	(1)	(2)
12 Months or Greater, Fair Value	0	50
12 Months or Greater, Gross Unrealized Losses	0	0
U.S. Treasury securities
Debt Securities, Available-for-Sale [Line Items]
Less Than 12 Months, Fair Value	2,789	1,360
Less Than 12 Months, Gross Unrealized Losses	(6)	(12)
12 Months or Greater, Fair Value	1,870	2,128
12 Months or Greater, Gross Unrealized Losses	$ (28)	$ (68)

Fair Value Measurements and I_6

Fair Value Measurements and Investments - Contractual Maturity of Debt Securities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Due within one year	$ 5,170
Due after one year through five years	3,092
Total	$ 8,262	$ 5,725

Fair Value Measurements and I_7

Fair Value Measurements and Investments - Schedule of Non-Marketable Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Initial cost basis	$ 710		$ 710
Upward adjustments	909		909
Downward adjustments (including impairment)	(445)		(445)
Carrying amount	1,174		1,174
Upward adjustments	0	$ 2	9	$ 19
Downward adjustments (including impairment)	$ (15)	$ (89)	$ (15)	$ (89)

Fair Value Measurements and I_8

Fair Value Measurements and Investments - Additional Information (Detail) - USD ($)		3 Months Ended		6 Months Ended
	Feb. 01, 2024	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains (losses) on equity securities held as of the end of the period		$ (23,000,000)	$ (82,000,000)	$ 13,000,000	$ (184,000,000)
Impairment of indefinite-lived intangible assets and goodwill	$ 0
Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of debt		20,600,000,000		20,600,000,000		$ 20,500,000,000
Estimated Fair Value | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair value of debt		$ 18,600,000,000		$ 18,600,000,000		$ 17,700,000,000

Debt - Summary of Debt (Details

Debt - Summary of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Unamortized discounts and debt issuance costs	$ (151)	$ (159)
Hedge accounting fair value adjustments	(238)	(314)
Total carrying value of debt	20,603	20,463
Current maturities of debt	0	0
Long-term debt	20,603	20,463
Senior Notes
Debt Instrument [Line Items]
Total debt	20,992	20,936
Senior Notes | 3.15% Senior Notes due December 2025 | U.S.
Debt Instrument [Line Items]
Total debt	$ 4,000	4,000
Effective interest rate (percent)	3.26%
Stated interest rate (percent)	3.15%
Senior Notes | 1.90% Senior Notes due April 2027 | U.S.
Debt Instrument [Line Items]
Total debt	$ 1,500	1,500
Effective interest rate (percent)	2.02%
Stated interest rate (percent)	1.90%
Senior Notes | 0.75% Senior Notes due August 2027 | U.S.
Debt Instrument [Line Items]
Total debt	$ 500	500
Effective interest rate (percent)	0.84%
Stated interest rate (percent)	0.75%
Senior Notes | 2.75% Senior Notes due September 2027 | U.S.
Debt Instrument [Line Items]
Total debt	$ 750	750
Effective interest rate (percent)	2.91%
Stated interest rate (percent)	2.75%
Senior Notes | 2.05% Senior Notes due April 2030 | U.S.
Debt Instrument [Line Items]
Total debt	$ 1,500	1,500
Effective interest rate (percent)	2.13%
Stated interest rate (percent)	2.05%
Senior Notes | 1.10% Senior Notes due February 2031 | U.S.
Debt Instrument [Line Items]
Total debt	$ 1,000	1,000
Effective interest rate (percent)	1.20%
Stated interest rate (percent)	1.10%
Senior Notes | 4.15% Senior Notes due December 2035 | U.S.
Debt Instrument [Line Items]
Total debt	$ 1,500	1,500
Effective interest rate (percent)	4.23%
Stated interest rate (percent)	4.15%
Senior Notes | 2.70% Senior Notes due April 2040 | U.S.
Debt Instrument [Line Items]
Total debt	$ 1,000	1,000
Effective interest rate (percent)	2.80%
Stated interest rate (percent)	2.70%
Senior Notes | 4.30% Senior Notes due December 2045 | U.S.
Debt Instrument [Line Items]
Total debt	$ 3,500	3,500
Effective interest rate (percent)	4.37%
Stated interest rate (percent)	4.30%
Senior Notes | 3.65% Senior Notes due September 2047 | U.S.
Debt Instrument [Line Items]
Total debt	$ 750	750
Effective interest rate (percent)	3.73%
Stated interest rate (percent)	3.65%
Senior Notes | 2.00% Senior Notes due August 2050 | U.S.
Debt Instrument [Line Items]
Total debt	$ 1,750	1,750
Effective interest rate (percent)	2.09%
Stated interest rate (percent)	2%
Senior Notes | 1.50% Senior Notes due June 2026 | Europe
Debt Instrument [Line Items]
Total debt	$ 1,459	1,434
Effective interest rate (percent)	1.71%
Stated interest rate (percent)	1.50%
Senior Notes | 2.00% Senior Notes due June 2029 | Europe
Debt Instrument [Line Items]
Total debt	$ 1,081	1,062
Effective interest rate (percent)	2.13%
Stated interest rate (percent)	2%
Senior Notes | 2.375% Senior Notes due June 2034 | Europe
Debt Instrument [Line Items]
Total debt	$ 702	$ 690
Effective interest rate (percent)	2.53%
Stated interest rate (percent)	2.375%

Settlement Guarantee Manageme_2

Settlement Guarantee Management - Additional Information (Details) $ in Billions	6 Months Ended
	Mar. 31, 2024 USD ($)
Settlement Guarantee Management [Abstract]
Maximum settlement exposure	$ 133.7
Average daily settlement exposure	82.3
Total collateral	$ 7.2

Stockholders' Equity - Number o

Stockholders' Equity - Number of Shares of Class A Common Shares Outstanding on an As-Converted Basis (Details) shares in Millions	Mar. 31, 2024 shares	Sep. 30, 2023 shares
Schedule of Common Stock as Converted [Line Items]
Preferred stock, shares outstanding (in shares)	5	5
As-converted Class A Common Stock (in shares)	2,025	2,047
Series A preferred stock
Schedule of Common Stock as Converted [Line Items]
Preferred stock, shares outstanding (in shares)	0	0
Preferred stock, conversion rate into Class A Common Stock	100	100
As-converted Class A Common Stock (in shares)	6	7
Series B preferred stock
Schedule of Common Stock as Converted [Line Items]
Preferred stock, shares outstanding (in shares)	2	2
Preferred stock, conversion rate into Class A Common Stock	2.9030	2.9370
As-converted Class A Common Stock (in shares)	7	7
Series C preferred stock
Schedule of Common Stock as Converted [Line Items]
Preferred stock, shares outstanding (in shares)	3	3
Preferred stock, conversion rate into Class A Common Stock	3.6250	3.6290
As-converted Class A Common Stock (in shares)	11	11
Class A common stock
Schedule of Common Stock as Converted [Line Items]
Common stock, shares outstanding (in shares)	1,574	1,594
As-converted Class A Common Stock (in shares)	1,574	1,594
Class B-1 common stock
Schedule of Common Stock as Converted [Line Items]
Common stock, shares outstanding (in shares)	245	245
Common stock, conversion rate into Class A Common Stock	1.5875	1.5875
As-converted Class A Common Stock (in shares)	390	390
Class C common stock
Schedule of Common Stock as Converted [Line Items]
Common stock, shares outstanding (in shares)	9	10
Common stock, conversion rate into Class A Common Stock	4	4
As-converted Class A Common Stock (in shares)	37	38

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of As-Converted Class B Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Stockholders' Equity Note [Abstract]
Reduction in equivalent number of as-converted shares of class A common stock (in shares)	0	2
Effective price per share (in dollars per share)	$ 0	$ 209.14
Deposits into the U.S. litigation escrow account	$ 0	$ 350

Stockholders' Equity - Effect o

Stockholders' Equity - Effect of VE Territory Covered Losses Through Conversion Rate Adjustments (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Conversion of Stock [Line Items]
Recovery through conversion rate adjustment	$ 0	$ 1
Series B preferred stock
Conversion of Stock [Line Items]
Reduction in equivalent number of class A common stock (in shares)	0	0
Effective price per share (in dollars per share)	$ 254.32	$ 211.34
Recovery through conversion rate adjustment	$ 22	$ 7
Series C preferred stock
Conversion of Stock [Line Items]
Reduction in equivalent number of class A common stock (in shares)	0	0
Effective price per share (in dollars per share)	$ 254.32	$ 211.34
Recovery through conversion rate adjustment	$ 3	$ 7

Stockholders' Equity - Share Re

Stockholders' Equity - Share Repurchases in the Open Market (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Equity, Class of Treasury Stock [Line Items]
Total cost	$ 2,784	$ 2,216	$ 6,393	$ 5,331
Class A common stock
Equity, Class of Treasury Stock [Line Items]
Shares repurchased in the open market (in shares)	10	10	25	26
Average repurchase cost per share (in dollars per share)	$ 280.41	$ 221.32	$ 255.09	$ 206.88
Total cost	$ 2,784	$ 2,216	$ 6,393	$ 5,331

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Apr. 23, 2024	Oct. 31, 2023	Sep. 30, 2023	Oct. 31, 2022
Equity, Class of Treasury Stock [Line Items]
Share repurchase program						$ 25,000		$ 12,000
Share repurchase programs authorized	$ 23,600		$ 23,600
Preferred stock, shares issued (in shares)	5		5				5
Dividends paid	$ 1,060	$ 941	$ 2,100	$ 1,900
Preferred Stock
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares authorized (in shares)	25		25				25
Series A preferred stock
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares authorized (in shares)	4		4				4
Series B preferred stock
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares authorized (in shares)	2		2				2
Series C preferred stock
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares authorized (in shares)	3		3				3
Class A common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	2,000,000		2,000,000				2,000,000
Class B-1 common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	499		499				622
Class B-2 common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	123		123
Class B-3 common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	61		61
Class B-4 common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	31		31
Class B-5 common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	15		15
Class C common stock
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)	1,100		1,100				1,100
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Quarterly cash dividend (in dollars per share)					$ 0.52

Earnings Per Share - Basic and

Earnings Per Share - Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Income Allocation - Basic	$ 4,663	$ 4,257	$ 9,553	$ 8,436
Class A common stock
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Income Allocation - Basic	$ 3,616	$ 3,307	$ 7,408	$ 6,549
Weighted- Average Shares Outstanding - Basic (in shares)	1,579	1,624	1,582	1,627
Earnings per Share - Basic (in dollars per share)	$ 2.29	$ 2.04	$ 4.68	$ 4.03
Income Allocation - Diluted	$ 4,663	$ 4,257	$ 9,553	$ 8,436
Weighted- Average Shares Outstanding - Diluted (in shares)	2,039	2,093	2,042	2,098
Earnings per Share - Diluted (in dollars per share)	$ 2.29	$ 2.03	$ 4.68	$ 4.02
Class B-1 common stock
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Income Allocation - Basic	$ 892	$ 800	$ 1,825	$ 1,584
Weighted- Average Shares Outstanding - Basic (in shares)	245	245	245	245
Earnings per Share - Basic (in dollars per share)	$ 3.63	$ 3.26	$ 7.44	$ 6.45
Income Allocation - Diluted	$ 891	$ 799	$ 1,823	$ 1,582
Weighted- Average Shares Outstanding - Diluted (in shares)	245	245	245	245
Earnings per Share - Diluted (in dollars per share)	$ 3.63	$ 3.25	$ 7.43	$ 6.44
Weighted-average as-converted common stock used in income allocation (in shares)	390	393	390	393
Class C common stock
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Income Allocation - Basic	$ 85	$ 79	$ 176	$ 157
Weighted- Average Shares Outstanding - Basic (in shares)	9	10	9	10
Earnings per Share - Basic (in dollars per share)	$ 9.16	$ 8.15	$ 18.73	$ 16.10
Income Allocation - Diluted	$ 85	$ 79	$ 176	$ 156
Weighted- Average Shares Outstanding - Diluted (in shares)	9	10	9	10
Earnings per Share - Diluted (in dollars per share)	$ 9.15	$ 8.14	$ 18.71	$ 16.09
Weighted-average as-converted common stock used in income allocation (in shares)	37	39	38	39
Participating securities
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Income Allocation - Basic	$ 70	$ 71	$ 144	$ 146
Income Allocation - Diluted	$ 70	$ 71	$ 144	$ 146
Series A preferred stock
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Weighted-average as-converted common stock used in income allocation (in shares)	6	10	6	11
Series B preferred stock
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Weighted-average as-converted common stock used in income allocation (in shares)	7	7	7	7
Series C preferred stock
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Weighted-average as-converted common stock used in income allocation (in shares)	11	11	11	11

Share-based Compensation - Awar

Share-based Compensation - Awards Granted to Company Employees and Non-employee Directors Under the 2007 Equity Incentive Compensation Plan (Details)	6 Months Ended
	Mar. 31, 2024 $ / shares shares
Non-qualified stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares	722,695
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 62.55
Weighted-Average Exercise Price (in dollars per share)	$ 249.56
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares	2,895,667
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 251.21
Performance-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares	528,008
Weighted-Average Grant Date Fair Value (in dollars per share)	$ 281.85

Share-based Compensation - Addi

Share-based Compensation - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 235	$ 214	$ 435	$ 384

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Effective income tax rate reconciliation, percent (in percent)	15%	19%	17%	18%
Recognized tax benefit	$ 184,000,000			$ 142,000,000
Decrease in unrecognized tax benefits, gross	117,000,000		$ 4,000,000
Decrease in unrecognized tax benefits, net	159,000,000		130,000,000
Increase (decrease) interest accrued related to uncertain tax positions	$ 72,000,000	$ 0	$ 51,000,000	$ 0

Legal Matters - Schedule of Acc

Legal Matters - Schedule of Accrued Litigation for Both Covered and Non-Covered Litigation (Detail) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	$ 1,751	$ 1,456
Balance at end of period	1,853	1,602
Uncovered Litigation
Loss Contingency Accrual [Roll Forward]
Provision for legal matters	310	0
Covered Litigation
Loss Contingency Accrual [Roll Forward]
Provision for legal matters	175	352
Payments for legal matters	(383)	(206)
U.S. Covered Litigation
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	1,621	1,441
Provision for legal matters	129	341
Payments for legal matters	(204)	(201)
Balance at end of period	1,546	1,581
VE Territory Covered Litigation
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	110	11
Provision for legal matters	46	11
Payments for legal matters	(144)	(5)
Balance at end of period	$ 12	$ 17

Legal Matters - Additional Info

Legal Matters - Additional Information (Details)	130 Months Ended
	Apr. 23, 2024 merchant	Mar. 31, 2024	Dec. 04, 2023 lawsuit
Loss Contingencies [Line Items]
Number of class action lawsuits | lawsuit			2
Interchange Multidistrict Litigation
Loss Contingencies [Line Items]
Settlement percentage		73%
Europe Merchant Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs	1,150
Number of claims settled	475
Number of claims pending	600
Europe Merchant Litigation | Threatened Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs	30