Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Statement [Abstract]
Net Revenue	$ 9,277	$ 8,133	$ 17,675	$ 15,383
Operating Expenses:
General and administrative	3,082	2,766	6,121	5,289
Advertising and marketing	217	213	370	365
Depreciation and amortization	309	281	608	556
Provision for litigation	82	96	82	247
Total operating expenses	3,690	3,356	7,181	6,457
Operating income	5,587	4,777	10,494	8,926
Other Income (Expense):
Investment income	88	70	169	158
Gains (losses) on equity investments, net	(2)	4	(68)	(25)
Interest expense	(218)	(195)	(403)	(377)
Other income (expense), net	31	16	106	21
Total other income (expense)	(101)	(105)	(196)	(223)
Income before income taxes	5,486	4,672	10,298	8,703
Income tax expense	1,098	971	2,028	1,722
Net Income	$ 4,388	$ 3,701	$ 8,270	$ 6,981
Basic Earnings per Share (in dollars per share)	$ 4.98	$ 4.08	$ 9.33	$ 7.67
Basic weighted-average shares outstanding (in shares)	882	908	887	910
Diluted Earnings per Share (in dollars per share)	$ 4.97	$ 4.07	$ 9.32	$ 7.66
Diluted weighted-average shares outstanding (in shares)	883	909	888	911

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Operating Activities
Net income	$ 8,270	$ 6,981
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of customer incentives	1,310	993
Depreciation and amortization	608	556
(Gains) losses on equity investments, net	68	25
Share-based compensation	326	308
Deferred income taxes	110	81
Other	84	60
Changes in operating assets and liabilities:
Accounts receivable	(448)	(217)
Settlement assets	(745)	(590)
Prepaid expenses	(3,835)	(2,238)
Accrued litigation and legal settlements	(504)	81
Restricted security deposits held for customers	90	125
Accounts payable	124	(168)
Settlement obligations	750	356
Accrued expenses	788	(203)
Net change in other assets and liabilities	(224)	833
Net cash provided by operating activities	6,772	6,983
Investing Activities
Purchases of investment securities available-for-sale	(134)	(247)
Purchases of investments held-to-maturity	0	(22)
Proceeds from sales of investment securities available-for-sale	32	126
Proceeds from maturities of investment securities available-for-sale	89	125
Proceeds from maturities of investments held-to-maturity	13	27
Purchases of property and equipment	(445)	(199)
Capitalized software	(368)	(367)
Other investing activities	(66)	(10)
Net cash used in investing activities	(879)	(567)
Financing Activities
Purchases of treasury stock	(8,933)	(4,838)
Dividends paid	(1,548)	(1,385)
Proceeds from debt, net of discounts	5,596	1,242
Payment of debt	0	(750)
Proceeds from (payment of) debt, maturities of 90 days or less, net	84	0
Tax withholdings related to share-based payments	(204)	(279)
Cash proceeds from employee stock plans	73	117
Other financing activities	(108)	(100)
Net cash used in financing activities	(5,040)	(5,993)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	(126)	341
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	727	764
Cash, cash equivalents, restricted cash and restricted cash equivalents - beginning of period	13,248	10,808
Cash, cash equivalents, restricted cash and restricted cash equivalents - end of period	$ 13,975	$ 11,572

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 11,291	$ 10,566
Restricted cash and restricted cash equivalents	488	561
Restricted security deposits held for customers	2,196	2,121
Investments	318	332
Accounts receivable	5,047	4,609
Settlement assets	2,371	1,626
Prepaid expenses and other current assets	4,811	3,743
Total current assets	26,522	23,558
Property, equipment and right-of-use assets, net of accumulated depreciation and amortization of $2,878 and $2,756, respectively	2,541	2,303
Deferred income taxes	1,441	1,567
Goodwill	9,498	9,560
Other intangible assets, net of accumulated amortization of $3,303 and $3,096, respectively	5,466	5,554
Other assets	12,223	11,615
Total Assets	57,691	54,157
Current liabilities:
Accounts payable	1,130	999
Settlement obligations	3,159	2,409
Restricted security deposits held for customers	2,196	2,121
Accrued litigation	296	800
Accrued expenses	13,027	13,272
Short-term debt	2,459	749
Other current liabilities	2,737	2,412
Total current liabilities	25,004	22,762
Long-term debt	22,184	18,251
Deferred income taxes	315	307
Other liabilities	4,582	5,091
Total Liabilities	52,085	46,411
Commitments and Contingencies
Stockholders’ Equity
Additional paid-in-capital	7,070	6,907
Class A treasury stock, at cost, 536 and 518 shares, respectively	(92,226)	(83,224)
Retained earnings	91,771	85,035
Accumulated other comprehensive income (loss)	(1,004)	(981)
Mastercard Incorporated Stockholders' Equity	5,611	7,737
Non-controlling interests	(5)	9
Total Equity	5,606	7,746
Total Liabilities and Equity	57,691	54,157
Class A Common Stock
Stockholders’ Equity
Common stock	0	0
Class B Common Stock
Stockholders’ Equity
Common stock	$ 0	$ 0