Mastercard (MA) 10-Q 27 Jul 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 24, 2017
Entity Registrant Name	MASTERCARD INC
Trading Symbol	MA
Entity Central Index Key	1,141,391
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Class A Common Stock
Entity Common Stock, Shares Outstanding		1,049,179,397
Class B Common Stock
Entity Common Stock, Shares Outstanding		15,717,897

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 5,177	$ 6,721
Restricted cash for litigation settlement	544	543
Investments	1,782	1,614
Accounts receivable	1,708	1,416
Settlement due from customers	1,271	1,093
Restricted security deposits held for customers	993	991
Prepaid expenses and other current assets	1,067	850
Total Current Assets	12,542	13,228
Property, plant and equipment, net of accumulated depreciation of $650 and $603, respectively	845	733
Deferred income taxes	375	307
Goodwill	2,759	1,756
Other intangible assets, net of accumulated amortization of $1,058 and $974, respectively	1,126	722
Other assets	2,192	1,929
Total Assets	19,839	18,675
LIABILITIES, REDEEMABLE NON-CONTROLLING INTERESTS AND EQUITY
Accounts payable	654	609
Settlement due to customers	1,106	946
Restricted security deposits held for customers	993	991
Accrued litigation	736	722
Accrued expenses	3,306	3,318
Other current liabilities	788	620
Total Current Liabilities	7,583	7,206
Long-term debt	5,326	5,180
Deferred income taxes	140	81
Other liabilities	842	524
Total Liabilities	13,891	12,991
Commitments and Contingencies
Redeemable Non-controlling Interests	70	0
Stockholders’ Equity
Additional paid-in-capital	4,257	4,183
Class A treasury stock, at cost, 329 and 312 shares, respectively	(18,911)	(17,021)
Retained earnings	21,205	19,418
Accumulated other comprehensive income (loss)	(699)	(924)
Total Stockholders’ Equity	5,852	5,656
Non-controlling interests	26	28
Total Equity	5,878	5,684
Total Liabilities, Redeemable Non-controlling Interests and Equity	19,839	18,675
Class A Common Stock
Stockholders’ Equity
Common stock	0	0
Total Equity	0	0
Class B Common Stock
Stockholders’ Equity
Common stock	0	0
Total Equity	$ 0	$ 0

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Property, plant and equipment, accumulated depreciation	$ 650	$ 603
Other intangible assets, accumulated amortization	$ 1,058	$ 974
Class A treasury stock, shares	329,000,000	312,000,000
Class A Common Stock
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	3,000,000,000	3,000,000,000
Common stock, issued	1,379,000,000	1,374,000,000
Common stock, outstanding	1,051,000,000	1,062,000,000
Class B Common Stock
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	1,200,000,000	1,200,000,000
Common stock, issued	16,000,000	19,000,000
Common stock, outstanding	16,000,000	19,000,000

Consolidated Statement of Opera

Consolidated Statement of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net Revenue	$ 3,053	$ 2,694	$ 5,787	$ 5,140
Operating Expenses
General and administrative	1,075	930	2,026	1,798
Advertising and marketing	214	184	384	319
Depreciation and amortization	111	93	203	188
Provision for litigation settlement	0	107	15	107
Total operating expenses	1,400	1,314	2,628	2,412
Operating income	1,653	1,380	3,159	2,728
Other Income (Expense)
Investment income	14	10	29	20
Interest expense	(39)	(22)	(78)	(42)
Other income (expense), net	0	(3)	(4)	(4)
Total other income (expense)	(25)	(15)	(53)	(26)
Income before income taxes	1,628	1,365	3,106	2,702
Income tax expense	451	382	848	760
Net Income	$ 1,177	$ 983	$ 2,258	$ 1,942
Basic Earnings per Share	$ 1.10	$ 0.89	$ 2.10	$ 1.76
Basic Weighted-Average Shares Outstanding	1,070	1,098	1,074	1,104
Diluted Earnings per Share	$ 1.10	$ 0.89	$ 2.09	$ 1.75
Diluted Weighted-Average Shares Outstanding	1,075	1,101	1,078	1,107

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 1,177	$ 983	$ 2,258	$ 1,942
Other comprehensive income (loss):
Foreign currency translation adjustments	230	(89)	316	5
Income tax effect	2	(7)	1	(5)
Foreign currency translation adjustments, net of income tax effect	232	(96)	317	0
Translation adjustments on net investment hedge	(108)	28	(142)	(36)
Income tax effect	40	(9)	52	13
Translation adjustments on net investment hedge, net of income tax effect	(68)	19	(90)	(23)
Defined benefit pension and other postretirement plans	0	(1)	(2)	(1)
Income tax effect	0	0	1	0
Defined benefit pension and other postretirement plans, net of income tax effect	0	(1)	(1)	(1)
Investment securities available-for-sale	(1)	2	(2)	5
Income tax effect	1	(1)	1	(2)
Investment securities available-for-sale, net of income tax effect	0	1	(1)	3
Other comprehensive income (loss), net of tax	164	(77)	225	(21)
Comprehensive Income	$ 1,341	$ 906	$ 2,483	$ 1,921

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - 6 months ended Jun. 30, 2017 - USD ($) $ in Millions	Total	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Additional Paid-In Capital	Class A Treasury Stock	Non- Controlling Interests	Class A Common Stock	Class B Common Stock
Balance at Dec. 31, 2016	$ 5,684	$ 19,418	$ (924)	$ 4,183	$ (17,021)	$ 28	$ 0	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,258	2,258
Activity related to non-controlling interests	(2)					(2)
Other comprehensive income (loss), net of tax	225		225
Cash dividends declared on Class A and Class B common stock, $0.44 per share	(471)	(471)
Purchases of treasury stock	(1,894)			0	(1,894)
Share-based payments	78			74	4
Balance at Jun. 30, 2017	$ 5,878	$ 21,205	$ (699)	$ 4,257	$ (18,911)	$ 26	$ 0	$ 0

Consolidated Statement of Chan7

Consolidated Statement of Changes in Equity (Parenthetical)	6 Months Ended
	Jun. 30, 2017$ / shares
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on Class A and Class B common stock, per share	$ 0.44

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net income	$ 2,258	$ 1,942
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of customer and merchant incentives	496	396
Depreciation and amortization	203	188
Share-based compensation	88	74
Tax benefit for share-based payments	0	(33)
Deferred income taxes	(23)	(8)
Other	35	(28)
Changes in operating assets and liabilities:
Accounts receivable	(186)	(100)
Settlement due from customers	(177)	75
Prepaid expenses	(980)	(522)
Accrued litigation and legal settlements	14	107
Accounts payable	24	(18)
Settlement due to customers	159	(50)
Accrued expenses	(4)	0
Net change in other assets and liabilities	132	96
Net cash provided by operating activities	2,039	2,119
Investing Activities
Purchases of investment securities available-for-sale	(322)	(561)
Purchases of investments held-to-maturity	(514)	(139)
Proceeds from sales of investment securities available-for-sale	105	107
Proceeds from maturities of investment securities available-for-sale	248	162
Proceeds from maturities of investments held-to-maturity	461	130
Purchases of property, plant and equipment	(114)	(101)
Capitalized software	(54)	(80)
Acquisition of businesses, net of cash acquired	(951)	0
Investment in nonmarketable equity investments	(121)	(11)
Other investing activities	8	(2)
Net cash used in investing activities	(1,254)	(495)
Financing Activities
Purchases of treasury stock	(1,893)	(1,819)
Repayments of Debt	(64)	0
Dividends paid	(474)	(421)
Tax benefit for share-based payments	0	33
Tax withholdings related to share-based payments	(46)	(52)
Cash proceeds from exercise of stock options	36	16
Other financing activities	(11)	(3)
Net cash used in financing activities	(2,452)	(2,246)
Effect of exchange rate changes on cash and cash equivalents	123	51
Net decrease in cash and cash equivalents	(1,544)	(571)
Cash and cash equivalents - beginning of period	6,721	5,747
Cash and cash equivalents - end of period	$ 5,177	$ 5,176

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Organization Mastercard Incorporated and its consolidated subsidiaries, including Mastercard International Incorporated (“Mastercard International” and together with Mastercard Incorporated, “Mastercard” or the “Company”), is a technology company in the global payments industry that connects consumers, financial institutions, merchants, governments and businesses worldwide, enabling them to use electronic forms of payment instead of cash and checks. The Company facilitates the switching (authorization, clearing and settlement) of payment transactions, and delivers related products and services. The Company makes payments easier and more efficient by creating a wide range of payment solutions and services through a family of well-known brands, including Mastercard®, Maestro® and Cirrus®. The Company also provides value-added offerings such as safety and security products, information services and consulting, issuer and acquirer processing, and loyalty and reward programs. The Company’s network is designed to ensure safety and security for the global payments system. A typical transaction on the Company’s network involves four participants in addition to the Company: cardholder (an individual who holds a card or uses another device enabled for payment), merchant, issuer (the cardholder’s financial institution) and acquirer (the merchant’s financial institution). The Company’s customers encompass a vast array of entities, including financial institutions and other entities that act as “issuers” and “acquirers”, as well as merchants, governments, and other businesses. The Company does not issue cards, extend credit, determine or receive revenue from interest rates or other fees charged to cardholders by issuers, or establish the rates charged by acquirers in connection with merchants’ acceptance of the Company’s branded cards. Consolidation and Basis of Presentation The consolidated financial statements include the accounts of Mastercard and its majority-owned and controlled entities, including any variable interest entities (“VIEs”) for which the Company is the primary beneficiary. At June 30, 2017 and December 31, 2016 , there were no significant VIEs which required consolidation. The Company consolidates acquisitions as of the date in which the Company has obtained a controlling financial interest. Intercompany transactions and balances have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the 2017 presentation. The Company follows accounting principles generally accepted in the United States of America (“GAAP”). The balance sheet as of December 31, 2016 was derived from the audited consolidated financial statements as of December 31, 2016 . The consolidated financial statements for the three and six months ended June 30, 2017 and 2016 and as of June 30, 2017 are unaudited, and in the opinion of management, include all normal recurring adjustments that are necessary to present fairly the results for interim periods. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year. The accompanying unaudited consolidated financial statements are presented in accordance with the U.S. Securities and Exchange Commission requirements for Quarterly Reports on Form 10-Q. Reference should be made to the Mastercard Incorporated Annual Report on Form 10-K for the year ended December 31, 2016 for additional disclosures, including a summary of the Company’s significant accounting policies. Non-controlling interest amounts are included in the consolidated statement of operations within other income (expense). For the three and six months ended June 30, 2017 and 2016 , activity from non-controlling interests was not material to the respective period results. Recent Accounting Pronouncements Net periodic pension cost and net periodic postretirement benefit cost - In March 2017, the Financial Accounting Standards Board (“FASB”) issued accounting guidance to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. Under this guidance, the service cost component is required to be reported in the same line item as other compensation costs arising from services rendered by employees during the period. The other components of the net periodic benefit costs are required to be presented in the consolidated statement of operations separately from the service cost component and outside of operating income. This guidance is required to be applied retrospectively. This guidance is effective for periods beginning after December 15, 2017, and interim periods within those years, with early adoption permitted. The Company will adopt this guidance effective January 1, 2018. The Company is in the process of evaluating the impacts this guidance will have on its consolidated financial statements. Goodwill impairment - In January 2017, the FASB issued accounting guidance to simplify how companies are required to test goodwill for impairment. Under this guidance, step 2 of the goodwill impairment test has been eliminated. Step 2 of the goodwill impairment test required companies to determine the implied fair value of the reporting unit’s goodwill. Under this guidance, companies will perform their annual, or interim, goodwill impairment test by comparing the reporting unit’s carrying value, including goodwill, to its fair value. An impairment charge would be recorded if the reporting unit’s carrying value exceeds its fair value. This guidance is required to be applied prospectively and is effective for periods beginning after December 15, 2019, with early adoption permitted. The Company adopted this guidance effective January 1, 2017 and there was no impact from the adoption of the new accounting guidance on its consolidated financial statements. Restricted cash - In November 2016, the FASB issued accounting guidance to address diversity in the classification and presentation of changes in restricted cash on the consolidated statement of cash flows. Under this guidance, companies will be required to present restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the beginning-of-period and end-of-period amounts shown on the consolidated statement of cash flows. This guidance is required to be applied retrospectively and is effective for periods beginning after December 15, 2017, with early adoption permitted. The Company will adopt this guidance effective January 1, 2018. Upon adoption of this standard, the Company will include restricted cash, which currently consists primarily of restricted cash for litigation settlement and restricted security deposits held for customers in its reconciliation of beginning-of-period and end-of-period amounts shown on the consolidated statement of cash flows. Intra-entity asset transfers - In October 2016, the FASB issued accounting guidance to simplify the accounting for income tax consequences of intra-entity transfers of assets other than inventory. Under this guidance, companies will be required to recognize the income tax consequences of an intra-entity asset transfer when the transfer occurs. This guidance must be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the period of adoption. This guidance is effective for periods beginning after December 15, 2017 and early adoption is permitted. The Company will adopt this guidance effective January 1, 2018. The Company is in the process of evaluating the impacts this guidance will have on its consolidated financial statements. However, the Company expects that it will recognize a cumulative-effect adjustment to retained earnings upon adoption of the new guidance related to certain tax activity resulting from intra-entity asset transfers occurring before the date of adoption. For a more detailed discussion of an intra-entity transfer of intellectual property that occurred in the fourth quarter of 2014, refer to Note 17 (Income Taxes) to the consolidated financial statements included in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2016. Share-based payments - In March 2016, the FASB issued accounting guidance related to share-based payments to employees. The Company adopted this guidance on January 1, 2017. The adoption had the following impacts on the consolidated financial statements: • The Company is required to recognize the excess tax benefits and deficiencies from share-based awards in the consolidated statement of operations in the period in which they occurred rather than in additional paid-in-capital. For the three and six months ended June 30, 2017 , the Company recorded excess tax benefits of $11 million and $31 million , respectively, within income tax expense. The Company is also required to revise its calculation of diluted weighted-average shares outstanding by excluding the tax effects from the assumed proceeds available to repurchase shares. For the three and six months ended June 30, 2017 , diluted weighted-average shares outstanding included additional shares of 1 million for both periods as a result of the change in this calculation. For the three and six months ended June 30, 2017 , the net impact of adoption resulted in an increase of $0.01 and $0.03 , respectively, to diluted earnings per share. Lastly, the Company is required to change the classification of these tax effects within the consolidated statement of cash flows and classify them as an operating activity rather than as a financing activity. Each of these above items have been adopted prospectively. • Retrospectively, the Company is required to change its classification of cash paid for employees withholding tax related to equity awards as a financing activity rather than as an operating activity within the consolidated statement of cash flows. As a result of this change in classification, cash provided by operating activities and cash used in financing activities within the consolidated statement of cash flows increased by $46 million and $52 million for the six months ended June 30, 2017 and 2016 , respectively. • This guidance allows a company-wide accounting policy election either to continue estimating forfeitures each period or to account for forfeitures as they occur. The Company elected to continue its existing practice to estimate the number of awards that will be forfeited. There was no impact on its consolidated financial statements. Leases - In February 2016, the FASB issued accounting guidance that will change how companies account for and present lease arrangements. This guidance requires companies to recognize leased assets and liabilities for both capital and operating leases. This guidance is effective for periods after December 15, 2018 and early adoption is permitted. Companies are required to adopt the guidance using a modified retrospective method. The Company expects to adopt this guidance effective January 1, 2019. The Company is in the process of evaluating the potential effects this guidance will have on its consolidated financial statements. Revenue recognition - In May 2014, the FASB issued accounting guidance that provides a single, comprehensive revenue recognition model for all contracts with customers and supersedes most of the existing revenue recognition requirements. Under this guidance, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued accounting guidance that delayed the effective date of this standard by one year, making this guidance effective for fiscal years beginning after December 15, 2017. This guidance will impact the timing of recognition for certain of the Company’s customer incentives. Under the new guidance, the Company will recognize certain customer incentives over the life of the contract as revenue is recognized versus as they are earned by the customer. The Company will adopt the new accounting guidance effective January 1, 2018. The accounting guidance permits either a full retrospective or a modified retrospective transition method. The Company expects to adopt this guidance with the modified retrospective transition method. The impact of the new accounting guidance will be dependent upon customer deals that have been signed and those that will be signed through the balance of 2017 and 2018. As such, the Company is in the process of quantifying the potential effects this guidance will have on its consolidated financial statements.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Acquisitions In the six months ended June 30, 2017 , the Company acquired businesses for total consideration of $1.2 billion . For the businesses acquired, Mastercard allocated the values associated with the assets, liabilities and redeemable non-controlling interests based on their respective fair values on the acquisition dates. Refer to Note 1 (Summary of Significant Accounting Policies) to the consolidated financial statements included in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2016, for the valuation techniques Mastercard utilizes to fair value the assets and liabilities acquired in business combinations. The residual value allocated to goodwill is primarily attributable to the synergies expected to arise after the acquisition date and is not expected to be deductible for tax purposes. For acquisitions occurring in 2017, the Company is evaluating and finalizing the purchase price accounting; however, the preliminary estimated fair values of the purchase price allocations in aggregate, as of the acquisition dates, are noted below: (in millions) Cash consideration $ 1,040 Contingent consideration 197 Redeemable non-controlling interests 69 Total fair value of businesses acquired $ 1,306 Assets: Cash and cash equivalents $ 89 Other current assets 96 Other intangible assets 453 Goodwill 935 Other assets 90 Total assets 1,663 Liabilities: Short-term debt 1 64 Other current liabilities 168 Net pension liability 66 Other liabilities 59 Total liabilities 357 Net assets acquired $ 1,306 1 The short-term debt assumed through the acquisitions was repaid as of June 30, 2017. The following table summarizes the identified intangible assets acquired: Acquisition Date Fair Value Weighted-Average Useful Life (in millions) (Years) Developed technologies $ 266 8.5 Customer relationships 177 10.5 Other 10 2.9 Other intangible assets $ 453 9.2 For the businesses acquired in 2017, the largest acquisition relates to VocaLink Holdings Limited (“Vocalink”), a payment systems and ATM switching platform operator, located principally in the U.K. On April 28, 2017, Mastercard acquired a 92.4% controlling interest in Vocalink for cash consideration of £719 million ( $929 million as of the acquisition date). In addition, the Vocalink sellers have the potential to earn additional contingent consideration up to £169 million (approximately $220 million as of June 30, 2017 ) if certain revenue targets are met in 2018. Refer to Note 4 (Fair Value and Investment Securities) for additional information related to the fair value of contingent consideration. A majority of Vocalink’s shareholders have retained a 7.6% ownership for at least three years , which is recorded as redeemable non-controlling interests on the consolidated balance sheet. These remaining shareholders have a put option to sell their ownership interest to Mastercard on the third and fifth anniversaries of the transaction and quarterly thereafter (the “Third Anniversary Option” and “Fifth Anniversary Option”, respectively). The Third Anniversary Option is exercisable at a fixed price of £58 million (approximately $75 million as of June 30, 2017 ) (the “Fixed Price”). The Fifth Anniversary Option is exercisable at the greater of the Fixed Price or fair value. Additionally, Mastercard has a call option to purchase the remaining interest from Vocalink’s shareholders on the fifth anniversary of the transaction and quarterly thereafter, which is exercisable at the greater of the Fixed Price or fair value. The fair value of the redeemable non-controlling interests was determined utilizing a market approach, which extrapolated the consideration transferred that was discounted for lack of control and marketability. The rollforward of redeemable non-controlling interests was not included as the activity was not considered to be material. Pro forma information related to acquisitions was not included because the impact on the Company's consolidated results of operations was not considered to be material. In July 2017, Mastercard entered into an agreement to acquire Brighterion, Inc., a software company specializing in artificial intelligence, to expand its capabilities in safety and security. The transaction is expected to close in 2017, subject to satisfying certain conditions.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The components of basic and diluted earnings per share (“EPS”) for common stock were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in millions, except per share data) Numerator Net income $ 1,177 $ 983 $ 2,258 $ 1,942 Denominator Basic weighted-average shares outstanding 1,070 1,098 1,074 1,104 Dilutive stock options and stock units 5 3 4 3 Diluted weighted-average shares outstanding 1 1,075 1,101 1,078 1,107 Earnings per Share Basic $ 1.10 $ 0.89 $ 2.10 $ 1.76 Diluted $ 1.10 $ 0.89 $ 2.09 $ 1.75 1 For the periods presented, the calculation of diluted EPS excluded a minimal amount of anti-dilutive share-based payment awards.

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2017
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Fair Value and Investment Securities	Fair Value and Investment Securities Financial Instruments – Recurring Measurements The Company classifies its fair value measurements of financial instruments into a three-level hierarchy (the “Valuation Hierarchy”). There were no transfers made among the three levels in the Valuation Hierarchy during the six months ended June 30, 2017 . The distribution of the Company’s financial instruments measured at fair value on a recurring basis within the Valuation Hierarchy were as follows: June 30, 2017 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (in millions) Assets Investment securities available for sale 1 : Municipal securities $ — $ 36 $ — $ 36 Government and agency securities 59 106 — 165 Corporate securities — 901 — 901 Asset-backed securities — 74 — 74 Equity securities 2 — — 2 Derivative instruments 2 : Foreign currency derivative assets — 4 — 4 Liabilities Derivative instruments 2 : Foreign currency derivative liabilities $ — $ (28 ) $ — $ (28 ) December 31, 2016 Quoted Prices Significant Significant Total (in millions) Assets Investment securities available for sale 1 : Municipal securities $ — $ 59 $ — $ 59 Government and agency securities 49 117 — 166 Corporate securities — 855 — 855 Asset-backed securities — 80 — 80 Equity securities 2 — — 2 Derivative instruments 2 : Foreign currency derivative assets — 29 — 29 Liabilities Derivative instruments 2 : Foreign currency derivative liabilities $ — $ (13 ) $ — $ (13 ) 1 The Company’s U.S. government securities and marketable equity securities are classified within Level 1 of the Valuation Hierarchy as the fair values are based on unadjusted quoted prices for identical assets in active markets. The fair value of the Company’s available-for-sale municipal securities, government and agency securities, corporate securities and asset-backed securities are based on observable inputs such as quoted prices, benchmark yields and issuer spreads for similar assets in active markets and are therefore included in Level 2 of the Valuation Hierarchy. 2 The Company’s foreign currency derivative asset and liability contracts have been classified within Level 2 of the Valuation Hierarchy as the fair value is based on observable inputs such as broker quotes relating to foreign currency exchange rates for similar derivative instruments. See Note 13 (Foreign Exchange Risk Management) for further details. Settlement and Other Guarantee Liabilities The Company estimates the fair value of its settlement and other guarantees using market assumptions for relevant though not directly comparable undertakings, as the latter are not observable in the market given the proprietary nature of such guarantees. At June 30, 2017 and December 31, 2016 , the carrying value and fair value of settlement and other guarantee liabilities were not material and accordingly are not included in the Valuation Hierarchy table above. Settlement and other guarantee liabilities are classified within Level 3 of the Valuation Hierarchy as their valuation requires substantial judgment and estimation of factors that are not observable in the market. For additional information regarding the Company’s settlement and other guarantee liabilities, see Note 12 (Settlement and Other Risk Management) . Financial Instruments - Non-Recurring Measurements Held-to-Maturity Securities Investments on the consolidated balance sheet include both available-for-sale and short-term held-to-maturity securities. Held-to-maturity securities are not measured at fair value on a recurring basis and are not included in the Valuation Hierarchy table above. At June 30, 2017 and December 31, 2016 , the Company held $604 million and $452 million , respectively, of short-term held-to-maturity securities. In addition, at December 31, 2016 , the Company held $61 million of long-term held-to-maturity securities included in other assets on the consolidated balance sheet. The Company did not hold any long-term held-to-maturity securities at June 30, 2017 . Both short-term and long-term held-to-maturity securities consist of time deposits and are classified within Level 2 of the Valuation Hierarchy. The cost of these securities approximates fair value. Nonmarketable Equity Investments The Company’s nonmarketable equity investments are measured at fair value at initial recognition and for impairment testing. These investments are classified within Level 3 of the Valuation Hierarchy due to the absence of quoted market prices, the inherent lack of liquidity, and the fact that inputs used to measure fair value are unobservable and require management’s judgment. The Company uses discounted cash flows and market assumptions to estimate the fair value of its nonmarketable equity investments when certain events or circumstances indicate that impairment may exist. These investments are included in other assets on the consolidated balance sheet and in Note 5 (Prepaid Expenses and Other Assets) . Debt The Company estimates the fair value of its long-term debt based on market quotes. These debt instruments are not traded in active markets and are classified within Level 2 of the Valuation Hierarchy. At June 30, 2017 , the carrying value and fair value of long-term debt was $5.3 billion and $5.5 billion , respectively. At December 31, 2016 , the carrying value and fair value of long-term debt was $5.2 billion and $5.3 billion , respectively. Other Financial Instruments Certain financial instruments are carried on the consolidated balance sheet at cost, which approximates fair value due to their short-term, highly liquid nature. These instruments include cash and cash equivalents, restricted cash, accounts receivable, settlement due from customers, restricted security deposits held for customers, accounts payable, settlement due to customers and other accrued liabilities. Non-Financial Instruments Certain assets are measured at fair value on a nonrecurring basis for purposes of initial recognition and impairment testing. The Company’s non-financial assets measured at fair value on a nonrecurring basis include property, plant and equipment, goodwill and other intangible assets. These assets are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment. Contingent consideration related to acquisitions is measured at fair value on a recurring basis. These liabilities are classified within Level 3 of the Valuation Hierarchy as the inputs used to measure fair value are unobservable and require management’s judgment. The fair value of the contingent consideration at the acquisition date and subsequent periods is determined utilizing an income approach based on a Monte Carlo technique and is recorded in Other liabilities on the consolidated balance sheet. The contingent consideration attributable to acquisitions made in 2017 is primarily based on the achievement of 2018 revenue targets. Changes to projected revenues of the acquired businesses could result in a higher or lower contingent consideration liability. Measurement period adjustments, if any, to the preliminary estimated fair value of contingent consideration as of the acquisition date will be recorded to goodwill, however, changes in fair value as a result of updated assumptions will be recorded within general and administrative expenses. The activity of the Company’s contingent consideration liability for the six months ended June 30, 2017 was as follows: (in millions) Balance at December 31, 2016 $ — Preliminary estimated fair value as of acquisition date for businesses acquired 197 Net change in valuation — Foreign currency translation 2 Balance at June 30, 2017 $ 199 Amortized Costs and Fair Values – Available-for-Sale Investment Securities The major classes of the Company’s available-for-sale investment securities, for which unrealized gains and losses are recorded as a separate component of other comprehensive income (loss) on the consolidated statement of comprehensive income, and their respective amortized cost basis and fair values as of June 30, 2017 and December 31, 2016 were as follows: June 30, 2017 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (in millions) Municipal securities $ 36 $ — $ — $ 36 Government and agency securities 165 — — 165 Corporate securities 900 2 (1 ) 901 Asset-backed securities 74 — — 74 Equity securities 2 — — 2 Total $ 1,177 $ 2 $ (1 ) $ 1,178 December 31, 2016 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (in millions) Municipal securities $ 59 $ — $ — $ 59 Government and agency securities 165 1 — 166 Corporate securities 853 3 (1 ) 855 Asset-backed securities 80 — — 80 Equity securities 2 — — 2 Total $ 1,159 $ 4 $ (1 ) $ 1,162 The Company’s available-for-sale investment securities held at June 30, 2017 and December 31, 2016 , primarily carried a credit rating of A-, or better. The municipal securities are primarily comprised of tax-exempt bonds and are diversified across states and sectors. Government and agency securities include U.S. government bonds, U.S. government sponsored agency bonds and foreign government bonds with similar credit quality to that of the U.S. government bonds. Corporate securities are comprised of commercial paper and corporate bonds. The asset-backed securities are investments in bonds which are collateralized primarily by automobile loan receivables. Investment Maturities The maturity distribution based on the contractual terms of the Company’s investment securities at June 30, 2017 was as follows: Available-For-Sale Amortized Cost Fair Value (in millions) Due within 1 year $ 440 $ 441 Due after 1 year through 5 years 735 735 Due after 5 years through 10 years — — Due after 10 years — — No contractual maturity 1 2 2 Total $ 1,177 $ 1,178 1 Equity securities have been included in the No contractual maturity category, as these securities do not have stated maturity dates. Investment Income Investment income primarily consists of interest income generated from cash, cash equivalents and investments. Gross realized gains and losses are recorded within investment income on the Company’s consolidated statement of operations. The gross realized gains and losses from the sales of available-for-sale securities for the three and six months ended June 30, 2017 and 2016 were not significant.

Prepaid Expenses and Other Asse

Prepaid Expenses and Other Assets	6 Months Ended
	Jun. 30, 2017
Prepaid Expense and Other Assets [Abstract]
Prepaid Expenses and Other Assets	Prepaid Expenses and Other Assets Prepaid expenses and other current assets consisted of the following: June 30, December 31, (in millions) Customer and merchant incentives $ 532 $ 479 Prepaid income taxes 172 118 Other 363 253 Total prepaid expenses and other current assets $ 1,067 $ 850 Other assets consisted of the following: June 30, December 31, (in millions) Customer and merchant incentives $ 1,357 $ 1,134 Nonmarketable equity investments 233 132 Prepaid income taxes 343 325 Income taxes receivable 159 175 Other 100 163 Total other assets $ 2,192 $ 1,929 Customer and merchant incentives represent payments made or amounts to be paid to customers and merchants under business agreements. Costs directly related to entering into such agreements are generally deferred and amortized over the life of the agreements. Amounts to be paid for these incentives and the related liability were included in accrued expenses and other liabilities. Nonmarketable equity investments represent the Company’s cost and equity method investments. For the six months ended June 30, 2017 , the Company invested $121 million in nonmarketable cost method equity investments.

Accrued Expenses

Accrued Expenses	6 Months Ended
	Jun. 30, 2017
Accrued Liabilities, Current [Abstract]
Accrued Expenses and Accrued Litigation	Accrued Expenses and Accrued Litigation Accrued expenses consisted of the following: June 30, December 31, (in millions) Customer and merchant incentives $ 2,254 $ 2,286 Personnel costs 342 496 Advertising 75 71 Income and other taxes 258 161 Other 377 304 Total accrued expenses $ 3,306 $ 3,318 As of June 30, 2017 and December 31, 2016 , the Company’s provision for litigation was $736 million and $722 million , respectively. These amounts are not included in the accrued expenses table above and are separately reported as accrued litigation on the consolidated balance sheet. See Note 11 (Legal and Regulatory Proceedings) for further discussion of the U.S. and Canadian merchant class litigations.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity The Company’s Board of Directors has approved share repurchase programs authorizing the Company to repurchase its Class A common stock. The Company typically completes a share repurchase program before a new program becomes effective. The following table summarizes the Company’s share repurchase authorizations of its Class A common stock through June 30, 2017 , as well as historical purchases: Authorization Dates December 2016 December 2015 December 2014 Total (in millions, except average price data) Board authorization $ 4,000 $ 4,000 $ 3,750 $ 11,750 Dollar value of shares repurchased during the six months ended June 30, 2016 $ — $ 1,312 $ 507 $ 1,819 Remaining authorization at December 31, 2016 $ 4,000 $ 996 $ — $ 4,996 Dollar value of shares repurchased during the six months ended June 30, 2017 $ 897 $ 996 $ — $ 1,893 Remaining authorization at June 30, 2017 $ 3,103 $ — $ — $ 3,103 Shares repurchased during the six months ended June 30, 2016 — 14.6 5.7 20.3 Average price paid per share during the six months ended June 30, 2016 $ — $ 90.13 $ 89.76 $ 90.03 Shares repurchased during the six months ended June 30, 2017 7.5 9.1 — 16.6 Average price paid per share during the six months ended June 30, 2017 $ 118.16 $ 109.16 $ — $ 113.25 Cumulative shares repurchased through June 30, 2017 7.5 40.4 40.8 88.7 Cumulative average price paid per share $ 118.16 $ 99.10 $ 92.03 $ 97.48 The following table presents the changes in the Company’s outstanding Class A and Class B common stock for the six months ended June 30, 2017 : Outstanding Shares Class A Class B (in millions) Balance at December 31, 2016 1,062.4 19.3 Purchases of treasury stock (16.6 ) — Share-based payments 1.6 — Conversion of Class B to Class A common stock 3.4 (3.4 ) Balance at June 30, 2017 1,050.8 15.9

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The changes in the balances of each component of accumulated other comprehensive income (loss), net of tax, for the six months ended June 30, 2017 and 2016 were as follows: Foreign Currency Translation Adjustments 1 Translation Adjustments on Net Investment Hedge Defined Benefit Pension and Other Postretirement Plans Investment Securities Available-for-Sale Accumulated Other Comprehensive Income (Loss) (in millions) Balance at December 31, 2015 $ (663 ) $ (26 ) $ 13 $ — $ (676 ) Other comprehensive income (loss) for the period 2 — (23 ) (1 ) 3 (21 ) Balance at June 30, 2016 $ (663 ) $ (49 ) $ 12 $ 3 $ (697 ) Balance at December 31, 2016 $ (949 ) $ 12 $ 11 $ 2 $ (924 ) Other comprehensive income (loss) for the period 2 317 (90 ) (1 ) (1 ) 225 Balance at June 30, 2017 $ (632 ) $ (78 ) $ 10 $ 1 $ (699 ) 1 During the six months ended June 30, 2017 , the decrease in other comprehensive loss related to foreign currency translation adjustments was driven primarily by the appreciation of the euro. 2 During the six months ended June 30, 2017 and 2016 , gains and losses reclassified from Accumulated other comprehensive income to the consolidated statement of operations were not significant.

Share-Based Payments

Share-Based Payments	6 Months Ended
	Jun. 30, 2017
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Share-Based Payments	Share-Based Payments During the six months ended June 30, 2017 , the Company granted the following awards under the Mastercard Incorporated 2006 Long Term Incentive Plan, as amended and restated (“LTIP”). The LTIP is a shareholder-approved plan that permits the grant of various types of equity awards to employees. Grants in 2017 Weighted-Average Grant-Date Fair Value (in millions) Non-qualified stock options 1.7 $21 Restricted stock units 1.3 $110 Performance stock units 0.2 $126 Stock options generally vest in four equal annual installments beginning one year after the date of grant and have a term of ten years . The Company used the Black-Scholes option pricing model to estimate the grant date fair value of stock options and calculated the expected term and the expected volatility based on historical Mastercard information. As a result, the expected term of stock options granted in 2017 was five years , while the expected volatility was determined to be 19.3% . Vesting of the shares underlying the restricted stock units and performance stock units will generally occur three years after the date of grant. The fair value of restricted stock units is determined and fixed on the grant date based on the Company’s Class A common stock price, adjusted for the exclusion of dividend equivalents. The Monte Carlo simulation valuation model was used to determine the grant date fair value of performance stock units granted. Compensation expense is recorded net of estimated forfeitures over the shorter of the vesting period or the date the individual becomes eligible to retire under the LTIP. The Company uses the straight-line method of attribution over the requisite service period for expensing equity awards.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective income tax rates were 27.7% and 27.3% for the three and six months ended June 30, 2017 , respectively, versus 28.0% and 28.1% for the comparable periods in 2016 . The lower effective tax rates, as compared to the prior year, were due to a more favorable geographical mix of taxable earnings, partially offset by a lower U.S. foreign tax credit benefit associated with the repatriation of current year foreign earnings. The Company is subject to tax in the United States, Belgium, Singapore, the United Kingdom and various other foreign jurisdictions, as well as state and local jurisdictions. Uncertain tax positions are reviewed on an ongoing basis and are adjusted after considering facts and circumstances, including progress of tax audits, developments in case law and closing of statutes of limitation. Within the next twelve months, the Company believes that the resolution of certain federal, foreign and state and local examinations are reasonably possible and that a change in estimate, reducing unrecognized tax benefits, may occur. While such a change may be significant, it is not possible to provide a range of the potential change until the examinations progress further or the related statutes of limitation expire. The Company has effectively settled its U.S. federal income tax obligations through 2008, with the exception of transfer pricing issues which are settled through 2011. With limited exception, the Company is no longer subject to state and local or foreign examinations by tax authorities for years before 2009.

Legal and Regulatory Proceeding

Legal and Regulatory Proceedings	6 Months Ended
	Jun. 30, 2017
Legal and Regulatory Proceedings [Abstract]
Legal and Regulatory Proceedings	Legal and Regulatory Proceedings Mastercard is a party to legal and regulatory proceedings with respect to a variety of matters in the ordinary course of business. Some of these proceedings are based on complex claims involving substantial uncertainties and unascertainable damages. Accordingly, except as discussed below, it is not possible to determine the probability of loss or estimate damages, and therefore, Mastercard has not established reserves for any of these proceedings. When the Company determines that a loss is both probable and reasonably estimable, Mastercard records a liability and discloses the amount of the liability if it is material. When a material loss contingency is only reasonably possible, Mastercard does not record a liability, but instead discloses the nature and the amount of the claim, and an estimate of the loss or range of loss, if such an estimate can be made. Unless otherwise stated below with respect to these matters, Mastercard cannot provide an estimate of the possible loss or range of loss based on one or more of the following reasons: (1) actual or potential plaintiffs have not claimed an amount of monetary damages or the amounts are unsupportable or exaggerated, (2) the matters are in early stages, (3) there is uncertainty as to the outcome of pending appeals or motions, (4) there are significant factual issues to be resolved, (5) the existence in many such proceedings of multiple defendants or potential defendants whose share of any potential financial responsibility has yet to be determined, and/or (6) there are novel legal issues presented. Furthermore, except as identified with respect to the matters below, Mastercard does not believe that the outcome of any individual existing legal or regulatory proceeding to which it is a party will have a material adverse effect on its results of operations, financial condition or overall business. However, an adverse judgment or other outcome or settlement with respect to any proceedings discussed below could result in fines or payments by Mastercard and/or could require Mastercard to change its business practices. In addition, an adverse outcome in a regulatory proceeding could lead to the filing of civil damage claims and possibly result in significant damage awards. Any of these events could have a material adverse effect on Mastercard’s results of operations, financial condition and overall business. Interchange Litigation and Regulatory Proceedings Mastercard’s interchange fees and other practices are subject to regulatory and/or legal review and/or challenges in a number of jurisdictions, including the proceedings described below. When taken as a whole, the resulting decisions, regulations and legislation with respect to interchange fees and acceptance practices may have a material adverse effect on the Company’s prospects for future growth and its overall results of operations, financial position and cash flows. United States. In June 2005, the first of a series of complaints were filed on behalf of merchants (the majority of the complaints were styled as class actions, although a few complaints were filed on behalf of individual merchant plaintiffs) against Mastercard International, Visa U.S.A., Inc., Visa International Service Association and a number of financial institutions. Taken together, the claims in the complaints were generally brought under both Sections 1 and 2 of the Sherman Act, which prohibit monopolization and attempts or conspiracies to monopolize a particular industry, and some of these complaints contain unfair competition law claims under state law. The complaints allege, among other things, that Mastercard, Visa, and certain financial institutions conspired to set the price of interchange fees, enacted point of sale acceptance rules (including the no surcharge rule) in violation of antitrust laws and engaged in unlawful tying and bundling of certain products and services. The cases were consolidated for pre-trial proceedings in the U.S. District Court for the Eastern District of New York in MDL No. 1720. The plaintiffs filed a consolidated class action complaint that seeks treble damages. In July 2006, the group of purported merchant class plaintiffs filed a supplemental complaint alleging that Mastercard’s initial public offering of its Class A Common Stock in May 2006 (the “IPO”) and certain purported agreements entered into between Mastercard and financial institutions in connection with the IPO: (1) violate U.S. antitrust laws and (2) constituted a fraudulent conveyance because the financial institutions allegedly attempted to release, without adequate consideration, Mastercard’s right to assess them for Mastercard’s litigation liabilities. The class plaintiffs sought treble damages and injunctive relief including, but not limited to, an order reversing and unwinding the IPO. In February 2011, Mastercard and Mastercard International entered into each of: (1) an omnibus judgment sharing and settlement sharing agreement with Visa Inc., Visa U.S.A. Inc. and Visa International Service Association and a number of financial institutions; and (2) a Mastercard settlement and judgment sharing agreement with a number of financial institutions. The agreements provide for the apportionment of certain costs and liabilities which Mastercard, the Visa parties and the financial institutions may incur, jointly and/or severally, in the event of an adverse judgment or settlement of one or all of the cases in the merchant litigations. Among a number of scenarios addressed by the agreements, in the event of a global settlement involving the Visa parties, the financial institutions and Mastercard, Mastercard would pay 12% of the monetary portion of the settlement. In the event of a settlement involving only Mastercard and the financial institutions with respect to their issuance of Mastercard cards, Mastercard would pay 36% of the monetary portion of such settlement. In October 2012, the parties entered into a definitive settlement agreement with respect to the merchant class litigation (including with respect to the claims related to the IPO) and the defendants separately entered into a settlement agreement with the individual merchant plaintiffs. The settlements included cash payments that were apportioned among the defendants pursuant to the omnibus judgment sharing and settlement sharing agreement described above. Mastercard also agreed to provide class members with a short-term reduction in default credit interchange rates and to modify certain of its business practices, including its “no surcharge” rule. The court granted final approval of the settlement in December 2013, and objectors to the settlement appealed that decision to the U.S. Court of Appeals for the Second Circuit. In June 2016, the court of appeals vacated the class action certification, reversed the settlement approval and sent the case back to the district court for further proceedings. The court of appeals’ ruling was based primarily on whether the merchants were adequately represented by counsel in the settlement. Prior to the reversal of the settlement approval, merchants representing slightly more than 25% of the Mastercard and Visa purchase volume over the relevant period chose to opt out of the class settlement. Mastercard had anticipated that most of the larger merchants who opted out of the settlement would initiate separate actions seeking to recover damages, and over 30 opt-out complaints have been filed on behalf of numerous merchants in various jurisdictions. Mastercard has executed settlement agreements with a number of opt-out merchants. Mastercard believes these settlement agreements are not impacted by the ruling of the court of appeals. The defendants have consolidated all of these matters (except for two state court actions) in front of the same federal district court that approved the merchant class settlement. In July 2014, the district court denied the defendants’ motion to dismiss the opt-out merchant complaints for failure to state a claim. Deposition discovery commenced in December 2016. As of June 30, 2017 , Mastercard had accrued a liability of $706 million as a reserve for both the merchant class litigation and the filed and anticipated opt-out merchant cases. As of June 30, 2017 and December 31, 2016 , Mastercard had $544 million and $543 million , respectively, in a qualified cash settlement fund related to the merchant class litigation and classified as restricted cash on its consolidated balance sheet. Mastercard believes the reserve for both the merchant class litigation and the filed and anticipated opt-out merchants represents its best estimate of its probable liabilities in these matters at June 30, 2017 . The portion of the accrued liability relating to both the opt-out merchants and the merchant class litigation settlement does not represent an estimate of a loss, if any, if the matters were litigated to a final outcome. Mastercard cannot estimate the potential liability if that were to occur. Canada . In December 2010, a proposed class action complaint was commenced against Mastercard in Quebec on behalf of Canadian merchants. The suit essentially repeated the allegations and arguments of a previously filed application by the Canadian Competition Bureau to the Canadian Competition Tribunal (dismissed in Mastercard’s favor) concerning certain Mastercard rules related to point-of-sale acceptance, including the “honor all cards” and “no surcharge” rules. The Quebec suit sought compensatory and punitive damages in unspecified amounts, as well as injunctive relief. In the first half of 2011, additional purported class action lawsuits were commenced in British Columbia and Ontario against Mastercard, Visa and a number of large Canadian financial institutions. The British Columbia suit sought compensatory damages in unspecified amounts, and the Ontario suit sought compensatory damages of $5 billion on the basis of alleged conspiracy and various alleged breaches of the Canadian Competition Act. Additional purported class action complaints were commenced in Saskatchewan and Alberta with claims that largely mirror those in the other suits. In June 2017, Mastercard entered into a class settlement agreement to resolve all of the Canadian class action litigation. The settlement, which is subject to court approval in each applicable province, requires Mastercard to make a cash payment and modify its “no surcharge” rule. During the first quarter of 2017, the Company recorded a provision for litigation of $15 million related to this matter. Europe. In July 2015, the European Commission issued a Statement of Objections related to Mastercard’s interregional interchange fees and central acquiring rules within the European Economic Area. The Statement of Objections, which follows an investigation opened in 2013, includes preliminary conclusions concerning the alleged anticompetitive effects of these practices. The European Commission has indicated it intends to seek fines if these conclusions are subsequently confirmed. In April 2016, Mastercard submitted a response to the Statement of Objections disputing the Commission’s preliminary conclusions and participated in a related oral hearing in May 2016. Since that time, Mastercard has remained in discussions with the Commission. Although the Statement of Objections does not quantify the level of fines, based upon recent interactions with the Commission, it is possible that they could be substantial, potentially in excess of $1 billion if the Commission were to issue a negative decision. Fines may be less than this amount in the event of a negotiated resolution. Due to the uncertainty of numerous legal issues, including the potential for a negotiated resolution, Mastercard cannot estimate a possible range of loss at this time, although Mastercard expects to obtain greater clarity with respect to these issues before the end of 2017. In the United Kingdom, beginning in May 2012, a number of retailers filed claims or threatened litigation against Mastercard seeking damages for alleged anti-competitive conduct with respect to Mastercard’s cross-border interchange fees and its U.K. and Ireland domestic interchange fees (the “U.K. Merchant claimants”), with claimed purported damages exceeding $1 billion . The U.K. Merchant claimants (including all resolved matters) represent approximately 40% of Mastercard’s U.K. interchange volume over the relevant damages period. Additional merchants have filed or threatened litigation with respect to interchange rates in Europe (the “Pan-European claimants”) for purported damages exceeding $1 billion . Mastercard submitted statements of defense to the retailers’ claims disputing liability and damages. In June 2015, Mastercard entered into a settlement with one of the U.K. Merchant claimants for $61 million , recorded as a provision for litigation settlement. Following the conclusion of a trial for liability and damages for one of the U.K. merchant cases, in July 2016, the tribunal issued a judgment against Mastercard for damages. Mastercard recorded a litigation provision of $107 million in the second quarter of 2016 that includes the amount of the judgment and estimated legal fees and costs. Mastercard has sought permission from the court to appeal this judgment. In the fourth quarter of 2016, Mastercard recorded a charge of $10 million relating to settlements with multiple U.K. Merchant claimants. In January 2017, Mastercard received a liability judgment in its favor on all significant matters in a separate action brought by ten of the U.K. Merchant claimants, who had been seeking in excess of $500 million in damages. Subsequently, Mastercard settled with six of these claimants to resolve their claims, with no financial payments required by Mastercard. The remaining U.K. Merchant claimants are seeking court permission to appeal the judgment. In September 2016, a proposed collective action was filed in the United Kingdom on behalf of U.K. consumers seeking damages for intra-EEA and domestic U.K. interchange fees that were allegedly passed on to consumers by merchants between 1992 and 2008. The complaint, which seeks to leverage the European Commission’s 2007 decision on intra-EEA interchange fees, claims damages in an amount that exceeds £14 billion (approximately $18 billion ). In July 2017, the court denied the plaintiffs’ application for the case to proceed as a collective action. Plaintiffs have no right of appeal from this decision. However, within three months of the issuance the court’s denial of their application, the plaintiffs could request permission to seek a judicial review of this decision. ATM Non-Discrimination Rule Surcharge Complaints In October 2011, a trade association of independent Automated Teller Machine (“ATM”) operators and 13 independent ATM operators filed a complaint styled as a class action lawsuit in the U.S. District Court for the District of Columbia against both Mastercard and Visa (the “ATM Operators Complaint”). Plaintiffs seek to represent a class of non-bank operators of ATM terminals that operate in the United States with the discretion to determine the price of the ATM access fee for the terminals they operate. Plaintiffs allege that Mastercard and Visa have violated Section 1 of the Sherman Act by imposing rules that require ATM operators to charge non-discriminatory ATM surcharges for transactions processed over Mastercard’s and Visa’s respective networks that are not greater than the surcharge for transactions over other networks accepted at the same ATM. Plaintiffs seek both injunctive and monetary relief equal to treble the damages they claim to have sustained as a result of the alleged violations and their costs of suit, including attorneys’ fees. Plaintiffs have not quantified their damages although they allege that they expect damages to be in the tens of millions of dollars. Subsequently, multiple related complaints were filed in the U.S. District Court for the District of Columbia alleging both federal antitrust and multiple state unfair competition, consumer protection and common law claims against Mastercard and Visa on behalf of putative classes of users of ATM services (the “ATM Consumer Complaints”). The claims in these actions largely mirror the allegations made in the ATM Operators Complaint, although these complaints seek damages on behalf of consumers of ATM services who pay allegedly inflated ATM fees at both bank and non-bank ATM operators as a result of the defendants’ ATM rules. Plaintiffs seek both injunctive and monetary relief equal to treble the damages they claim to have sustained as a result of the alleged violations and their costs of suit, including attorneys’ fees. Plaintiffs have not quantified their damages although they allege that they expect damages to be in the tens of millions of dollars. In January 2012, the plaintiffs in the ATM Operators Complaint and the ATM Consumer Complaints filed amended class action complaints that largely mirror their prior complaints. In February 2013, the district court granted Mastercard’s motion to dismiss the complaints for failure to state a claim. On appeal, the Court of Appeals reversed the district court’s order in August 2015 and sent the case back for further proceedings. In March 2016, certain of the plaintiffs in the ATM Operators Complaint filed a motion seeking a preliminary injunction enjoining the enforcement of the nondiscrimination rules pending the outcome of the litigation. In May 2017, the court denied the plaintiffs’ motion and the case is now proceeding to discovery. U.S. Liability Shift Litigation In March 2016, a proposed U.S. merchant class action complaint was filed in federal court in California alleging that Mastercard, Visa, American Express and Discover (the “Network Defendants”), EMVCo, and a number of issuing banks (the “Bank Defendants”) engaged in a conspiracy to shift fraud liability for card present transactions from issuing banks to merchants not yet in compliance with the standards for EMV chip cards in the United States (the “EMV Liability Shift”), in violation of the Sherman Act and California law. Plaintiffs allege damages equal to the value of all chargebacks for which class members became liable as a result of the EMV Liability Shift on October 1, 2015. The plaintiffs seek treble damages, attorney’s fees and costs and an injunction against future violations of governing law, and the defendants have filed a motion to dismiss. In September 2016, the court denied the Network Defendants’ motion to dismiss the complaint, but granted such a motion for EMVCo and the Bank Defendants. In May 2017, the court transferred the case to New York so that discovery could be coordinated with the U.S. merchant class interchange litigation described above.

Settlement and Other Risk Manag

Settlement and Other Risk Management	6 Months Ended
	Jun. 30, 2017
Settlement and Other Risk Management [Abstract]
Settlement and Other Risk Management	Settlement and Other Risk Management Mastercard’s rules guarantee the settlement of many of the Mastercard, Cirrus and Maestro branded transactions between its issuers and acquirers (“settlement risk”). Settlement exposure is the outstanding settlement risk to customers under Mastercard’s rules due to the difference in timing between the payment transaction date and subsequent settlement. While the term and amount of the guarantee are unlimited, the duration of settlement exposure is short term and typically limited to a few days. Gross settlement exposure is estimated using the average daily card volume during the quarter multiplied by the estimated number of days to settle. The Company has global risk management policies and procedures, which include risk standards, to provide a framework for managing the Company’s settlement risk. Customer-reported transaction data and the transaction clearing data underlying the settlement exposure calculation may be revised in subsequent reporting periods. In the event that Mastercard effects a payment on behalf of a failed customer, Mastercard may seek an assignment of the underlying receivables of the failed customer. Customers may be charged for the amount of any settlement loss incurred during the ordinary course activities of the Company. The Company has global risk management policies and procedures aimed at managing the settlement exposure. These risk management procedures include interaction with the bank regulators of countries in which it operates, requiring customers to make adjustments to settlement processes, and requiring collateral from customers. As part of its policies, Mastercard requires certain customers that are not in compliance with the Company’s risk standards in effect at the time of review to post collateral, typically in the form of cash, letters of credit, or guarantees. This requirement is based on management’s review of the individual risk circumstances for each customer that is out of compliance. In addition to these amounts, Mastercard holds collateral to cover variability and future growth in customer programs. The Company may also hold collateral to pay merchants in the event of an acquirer failure. Although the Company is not contractually obligated under its rules to effect such payments to merchants, the Company may elect to do so to protect brand integrity. Mastercard monitors its credit risk portfolio on a regular basis and the adequacy of collateral on hand. Additionally, from time to time, the Company reviews its risk management methodology and standards. As such, the amounts of estimated settlement exposure are revised as necessary. The Company’s estimated settlement exposure from Mastercard, Cirrus and Maestro branded transactions was as follows: June 30, December 31, (in millions) Gross settlement exposure 1 $ 42,565 $ 39,523 Collateral held for settlement exposure (4,138 ) (3,734 ) Net uncollateralized settlement exposure $ 38,427 $ 35,789 1. In the second quarter of 2017, Mastercard adjusted the methodology for estimating gross settlement exposure for certain customers whose exposures are now reported before the impact of potential offsetting positions. The gross settlement exposure as of December 31, 2016 has been updated to conform to the current year’s methodology. General economic and political conditions in countries in which Mastercard operates affect the Company’s settlement risk. Many of the Company’s financial institution customers have been directly and adversely impacted by political instability and uncertain economic conditions. These conditions present increased risk that the Company may have to perform under its settlement guarantee. This risk could increase if political, economic and financial market conditions deteriorate further. The Company’s global risk management policies and procedures are revised and enhanced from time to time. Historically, the Company has experienced a low level of losses from financial institution failures. Mastercard also provides guarantees to customers and certain other counterparties indemnifying them from losses stemming from failures of third parties to perform duties. This includes guarantees of Mastercard-branded travelers cheques issued, but not yet cashed of $397 million both at June 30, 2017 and December 31, 2016 , of which $313 million and $312 million at June 30, 2017 and December 31, 2016 , respectively, is mitigated by collateral arrangements. In addition, the Company enters into agreements in the ordinary course of business under which the Company agrees to indemnify third parties against damages, losses and expenses incurred in connection with legal and other proceedings arising from relationships or transactions with the Company. Certain indemnifications do not provide a stated maximum exposure. As the extent of the Company’s obligations under these agreements depends entirely upon the occurrence of future events, the Company’s potential future liability under these agreements is not determinable. Historically, payments made by the Company under these types of contractual arrangements have not been material.

Foreign Exchange Risk Managemen

Foreign Exchange Risk Management	6 Months Ended
	Jun. 30, 2017
Foreign Currency Derivatives [Abstract]
Foreign Exchange Risk Management	Foreign Exchange Risk Management The Company monitors and manages its foreign currency exposures as part of its overall risk management program which focuses on the unpredictability of financial markets and seeks to reduce the potentially adverse effects that the volatility of these markets may have on its operating results. A principal objective of the Company’s risk management strategies is to reduce significant, unanticipated earnings fluctuations that may arise from volatility in foreign currency exchange rates principally through the use of derivative instruments. Derivatives The Company enters into foreign currency derivative contracts to manage risk associated with anticipated receipts and disbursements which are valued based on currencies other than the functional currencies of the entity. The Company may also enter into foreign currency derivative contracts to offset possible changes in value due to foreign exchange fluctuations of earnings, assets and liabilities. The objective of these activities is to reduce the Company’s exposure to gains and losses resulting from fluctuations of foreign currencies against its functional currencies. As of June 30, 2017 and December 31, 2016 , the majority of derivative contracts to hedge foreign currency fluctuations had been entered into with customers of Mastercard. Mastercard’s derivative contracts are summarized below: June 30, 2017 December 31, 2016 Notional Estimated Fair Value Notional Estimated Fair Value (in millions) Commitments to purchase foreign currency $ 19 $ — $ 37 $ (2 ) Commitments to sell foreign currency 835 (24 ) 777 18 Options to sell foreign currency 7 — — — Balance sheet location Accounts receivable 1 $ 4 $ 29 Other current liabilities 1 (28 ) (13 ) 1 The derivative contracts are subject to enforceable master netting arrangements, which contain various netting and setoff provisions. The amount of gain (loss) recognized in income for the contracts to purchase and sell foreign currency is summarized below: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in millions) Foreign currency derivative contracts General and administrative $ (17 ) $ 8 $ (45 ) $ (36 ) The fair value of the foreign currency derivative contracts generally reflects the estimated amounts that the Company would receive (or pay), on a pre-tax basis, to terminate the contracts. The terms of the foreign currency derivative contracts are generally less than 18 months . The Company had no deferred gains or losses related to foreign exchange contracts in accumulated other comprehensive income as of June 30, 2017 and December 31, 2016 , as these contracts were not accounted for under hedge accounting. The Company’s derivative financial instruments are subject to both market and counterparty credit risk. Market risk is the potential for economic losses to be incurred on market risk sensitive instruments arising from adverse changes in market factors such as foreign currency exchange rates, interest rates and other related variables. The effect of a hypothetical 10% adverse change in foreign currency forward rates could result in a fair value loss of approximately $94 million on the Company’s foreign currency derivative contracts outstanding at June 30, 2017 . Counterparty credit risk is the risk of loss due to failure of the counterparty to perform its obligations in accordance with contractual terms. To mitigate counterparty credit risk, the Company enters into derivative contracts with a diversified group of selected financial institutions based upon their credit ratings and other factors. Generally, the Company does not obtain collateral related to derivatives because of the high credit ratings of the counterparties. Net Investment Hedge The Company uses foreign currency denominated debt to hedge a portion of its net investment in foreign operations against adverse movements in exchange rates, with changes in the value of the debt recorded within currency translation adjustment in accumulated other comprehensive income (loss). In 2015, the Company designated its €1.65 billion euro-denominated debt as a net investment hedge for a portion of its net investment in European foreign operations. As of June 30, 2017 , the Company had a net foreign currency transaction pre-tax loss of $122 million in accumulated other comprehensive income (loss) associated with hedging activity. There was no ineffectiveness in the current period.

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policy)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Organization	Organization Mastercard Incorporated and its consolidated subsidiaries, including Mastercard International Incorporated (“Mastercard International” and together with Mastercard Incorporated, “Mastercard” or the “Company”), is a technology company in the global payments industry that connects consumers, financial institutions, merchants, governments and businesses worldwide, enabling them to use electronic forms of payment instead of cash and checks. The Company facilitates the switching (authorization, clearing and settlement) of payment transactions, and delivers related products and services. The Company makes payments easier and more efficient by creating a wide range of payment solutions and services through a family of well-known brands, including Mastercard®, Maestro® and Cirrus®. The Company also provides value-added offerings such as safety and security products, information services and consulting, issuer and acquirer processing, and loyalty and reward programs. The Company’s network is designed to ensure safety and security for the global payments system. A typical transaction on the Company’s network involves four participants in addition to the Company: cardholder (an individual who holds a card or uses another device enabled for payment), merchant, issuer (the cardholder’s financial institution) and acquirer (the merchant’s financial institution). The Company’s customers encompass a vast array of entities, including financial institutions and other entities that act as “issuers” and “acquirers”, as well as merchants, governments, and other businesses. The Company does not issue cards, extend credit, determine or receive revenue from interest rates or other fees charged to cardholders by issuers, or establish the rates charged by acquirers in connection with merchants’ acceptance of the Company’s branded cards.
Consolidation and basis of presentation	Consolidation and Basis of Presentation The consolidated financial statements include the accounts of Mastercard and its majority-owned and controlled entities, including any variable interest entities (“VIEs”) for which the Company is the primary beneficiary. At June 30, 2017 and December 31, 2016 , there were no significant VIEs which required consolidation. The Company consolidates acquisitions as of the date in which the Company has obtained a controlling financial interest. Intercompany transactions and balances have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the 2017 presentation. The Company follows accounting principles generally accepted in the United States of America (“GAAP”). The balance sheet as of December 31, 2016 was derived from the audited consolidated financial statements as of December 31, 2016 . The consolidated financial statements for the three and six months ended June 30, 2017 and 2016 and as of June 30, 2017 are unaudited, and in the opinion of management, include all normal recurring adjustments that are necessary to present fairly the results for interim periods. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year. The accompanying unaudited consolidated financial statements are presented in accordance with the U.S. Securities and Exchange Commission requirements for Quarterly Reports on Form 10-Q. Reference should be made to the Mastercard Incorporated Annual Report on Form 10-K for the year ended December 31, 2016 for additional disclosures, including a summary of the Company’s significant accounting policies. Non-controlling interest amounts are included in the consolidated statement of operations within other income (expense). For the three and six months ended June 30, 2017 and 2016 , activity from non-controlling interests was not material to the respective period results.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Net periodic pension cost and net periodic postretirement benefit cost - In March 2017, the Financial Accounting Standards Board (“FASB”) issued accounting guidance to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. Under this guidance, the service cost component is required to be reported in the same line item as other compensation costs arising from services rendered by employees during the period. The other components of the net periodic benefit costs are required to be presented in the consolidated statement of operations separately from the service cost component and outside of operating income. This guidance is required to be applied retrospectively. This guidance is effective for periods beginning after December 15, 2017, and interim periods within those years, with early adoption permitted. The Company will adopt this guidance effective January 1, 2018. The Company is in the process of evaluating the impacts this guidance will have on its consolidated financial statements. Goodwill impairment - In January 2017, the FASB issued accounting guidance to simplify how companies are required to test goodwill for impairment. Under this guidance, step 2 of the goodwill impairment test has been eliminated. Step 2 of the goodwill impairment test required companies to determine the implied fair value of the reporting unit’s goodwill. Under this guidance, companies will perform their annual, or interim, goodwill impairment test by comparing the reporting unit’s carrying value, including goodwill, to its fair value. An impairment charge would be recorded if the reporting unit’s carrying value exceeds its fair value. This guidance is required to be applied prospectively and is effective for periods beginning after December 15, 2019, with early adoption permitted. The Company adopted this guidance effective January 1, 2017 and there was no impact from the adoption of the new accounting guidance on its consolidated financial statements. Restricted cash - In November 2016, the FASB issued accounting guidance to address diversity in the classification and presentation of changes in restricted cash on the consolidated statement of cash flows. Under this guidance, companies will be required to present restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the beginning-of-period and end-of-period amounts shown on the consolidated statement of cash flows. This guidance is required to be applied retrospectively and is effective for periods beginning after December 15, 2017, with early adoption permitted. The Company will adopt this guidance effective January 1, 2018. Upon adoption of this standard, the Company will include restricted cash, which currently consists primarily of restricted cash for litigation settlement and restricted security deposits held for customers in its reconciliation of beginning-of-period and end-of-period amounts shown on the consolidated statement of cash flows. Intra-entity asset transfers - In October 2016, the FASB issued accounting guidance to simplify the accounting for income tax consequences of intra-entity transfers of assets other than inventory. Under this guidance, companies will be required to recognize the income tax consequences of an intra-entity asset transfer when the transfer occurs. This guidance must be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the period of adoption. This guidance is effective for periods beginning after December 15, 2017 and early adoption is permitted. The Company will adopt this guidance effective January 1, 2018. The Company is in the process of evaluating the impacts this guidance will have on its consolidated financial statements. However, the Company expects that it will recognize a cumulative-effect adjustment to retained earnings upon adoption of the new guidance related to certain tax activity resulting from intra-entity asset transfers occurring before the date of adoption. For a more detailed discussion of an intra-entity transfer of intellectual property that occurred in the fourth quarter of 2014, refer to Note 17 (Income Taxes) to the consolidated financial statements included in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2016. Share-based payments - In March 2016, the FASB issued accounting guidance related to share-based payments to employees. The Company adopted this guidance on January 1, 2017. The adoption had the following impacts on the consolidated financial statements: • The Company is required to recognize the excess tax benefits and deficiencies from share-based awards in the consolidated statement of operations in the period in which they occurred rather than in additional paid-in-capital. For the three and six months ended June 30, 2017 , the Company recorded excess tax benefits of $11 million and $31 million , respectively, within income tax expense. The Company is also required to revise its calculation of diluted weighted-average shares outstanding by excluding the tax effects from the assumed proceeds available to repurchase shares. For the three and six months ended June 30, 2017 , diluted weighted-average shares outstanding included additional shares of 1 million for both periods as a result of the change in this calculation. For the three and six months ended June 30, 2017 , the net impact of adoption resulted in an increase of $0.01 and $0.03 , respectively, to diluted earnings per share. Lastly, the Company is required to change the classification of these tax effects within the consolidated statement of cash flows and classify them as an operating activity rather than as a financing activity. Each of these above items have been adopted prospectively. • Retrospectively, the Company is required to change its classification of cash paid for employees withholding tax related to equity awards as a financing activity rather than as an operating activity within the consolidated statement of cash flows. As a result of this change in classification, cash provided by operating activities and cash used in financing activities within the consolidated statement of cash flows increased by $46 million and $52 million for the six months ended June 30, 2017 and 2016 , respectively. • This guidance allows a company-wide accounting policy election either to continue estimating forfeitures each period or to account for forfeitures as they occur. The Company elected to continue its existing practice to estimate the number of awards that will be forfeited. There was no impact on its consolidated financial statements. Leases - In February 2016, the FASB issued accounting guidance that will change how companies account for and present lease arrangements. This guidance requires companies to recognize leased assets and liabilities for both capital and operating leases. This guidance is effective for periods after December 15, 2018 and early adoption is permitted. Companies are required to adopt the guidance using a modified retrospective method. The Company expects to adopt this guidance effective January 1, 2019. The Company is in the process of evaluating the potential effects this guidance will have on its consolidated financial statements. Revenue recognition - In May 2014, the FASB issued accounting guidance that provides a single, comprehensive revenue recognition model for all contracts with customers and supersedes most of the existing revenue recognition requirements. Under this guidance, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued accounting guidance that delayed the effective date of this standard by one year, making this guidance effective for fiscal years beginning after December 15, 2017. This guidance will impact the timing of recognition for certain of the Company’s customer incentives. Under the new guidance, the Company will recognize certain customer incentives over the life of the contract as revenue is recognized versus as they are earned by the customer. The Company will adopt the new accounting guidance effective January 1, 2018. The accounting guidance permits either a full retrospective or a modified retrospective transition method. The Company expects to adopt this guidance with the modified retrospective transition method. The impact of the new accounting guidance will be dependent upon customer deals that have been signed and those that will be signed through the balance of 2017 and 2018. As such, the Company is in the process of quantifying the potential effects this guidance will have on its consolidated financial statements.

Acquisitions Acquisitions (Tabl

Acquisitions Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	For acquisitions occurring in 2017, the Company is evaluating and finalizing the purchase price accounting; however, the preliminary estimated fair values of the purchase price allocations in aggregate, as of the acquisition dates, are noted below: (in millions) Cash consideration $ 1,040 Contingent consideration 197 Redeemable non-controlling interests 69 Total fair value of businesses acquired $ 1,306 Assets: Cash and cash equivalents $ 89 Other current assets 96 Other intangible assets 453 Goodwill 935 Other assets 90 Total assets 1,663 Liabilities: Short-term debt 1 64 Other current liabilities 168 Net pension liability 66 Other liabilities 59 Total liabilities 357 Net assets acquired $ 1,306 1 The short-term debt assumed through the acquisitions was repaid as of June 30, 2017.
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	The following table summarizes the identified intangible assets acquired: Acquisition Date Fair Value Weighted-Average Useful Life (in millions) (Years) Developed technologies $ 266 8.5 Customer relationships 177 10.5 Other 10 2.9 Other intangible assets $ 453 9.2

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings Per Share	The components of basic and diluted earnings per share (“EPS”) for common stock were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in millions, except per share data) Numerator Net income $ 1,177 $ 983 $ 2,258 $ 1,942 Denominator Basic weighted-average shares outstanding 1,070 1,098 1,074 1,104 Dilutive stock options and stock units 5 3 4 3 Diluted weighted-average shares outstanding 1 1,075 1,101 1,078 1,107 Earnings per Share Basic $ 1.10 $ 0.89 $ 2.10 $ 1.76 Diluted $ 1.10 $ 0.89 $ 2.09 $ 1.75 1 For the periods presented, the calculation of diluted EPS excluded a minimal amount of anti-dilutive share-based payment awards.

Fair Value and Investment Secur

Fair Value and Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2017
Marketable Securities [Abstract]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	The activity of the Company’s contingent consideration liability for the six months ended June 30, 2017 was as follows: (in millions) Balance at December 31, 2016 $ — Preliminary estimated fair value as of acquisition date for businesses acquired 197 Net change in valuation — Foreign currency translation 2 Balance at June 30, 2017 $ 199
Distribution of Financial Instruments, Measured at Fair Value on a Recurring Basis	The distribution of the Company’s financial instruments measured at fair value on a recurring basis within the Valuation Hierarchy were as follows: June 30, 2017 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (in millions) Assets Investment securities available for sale 1 : Municipal securities $ — $ 36 $ — $ 36 Government and agency securities 59 106 — 165 Corporate securities — 901 — 901 Asset-backed securities — 74 — 74 Equity securities 2 — — 2 Derivative instruments 2 : Foreign currency derivative assets — 4 — 4 Liabilities Derivative instruments 2 : Foreign currency derivative liabilities $ — $ (28 ) $ — $ (28 ) December 31, 2016 Quoted Prices Significant Significant Total (in millions) Assets Investment securities available for sale 1 : Municipal securities $ — $ 59 $ — $ 59 Government and agency securities 49 117 — 166 Corporate securities — 855 — 855 Asset-backed securities — 80 — 80 Equity securities 2 — — 2 Derivative instruments 2 : Foreign currency derivative assets — 29 — 29 Liabilities Derivative instruments 2 : Foreign currency derivative liabilities $ — $ (13 ) $ — $ (13 ) 1 The Company’s U.S. government securities and marketable equity securities are classified within Level 1 of the Valuation Hierarchy as the fair values are based on unadjusted quoted prices for identical assets in active markets. The fair value of the Company’s available-for-sale municipal securities, government and agency securities, corporate securities and asset-backed securities are based on observable inputs such as quoted prices, benchmark yields and issuer spreads for similar assets in active markets and are therefore included in Level 2 of the Valuation Hierarchy. 2 The Company’s foreign currency derivative asset and liability contracts have been classified within Level 2 of the Valuation Hierarchy as the fair value is based on observable inputs such as broker quotes relating to foreign currency exchange rates for similar derivative instruments. See Note 13 (Foreign Exchange Risk Management) for further details.
Available-for-Sale Investment Securities, Unrealized Gains and Losses	The major classes of the Company’s available-for-sale investment securities, for which unrealized gains and losses are recorded as a separate component of other comprehensive income (loss) on the consolidated statement of comprehensive income, and their respective amortized cost basis and fair values as of June 30, 2017 and December 31, 2016 were as follows: June 30, 2017 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (in millions) Municipal securities $ 36 $ — $ — $ 36 Government and agency securities 165 — — 165 Corporate securities 900 2 (1 ) 901 Asset-backed securities 74 — — 74 Equity securities 2 — — 2 Total $ 1,177 $ 2 $ (1 ) $ 1,178 December 31, 2016 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (in millions) Municipal securities $ 59 $ — $ — $ 59 Government and agency securities 165 1 — 166 Corporate securities 853 3 (1 ) 855 Asset-backed securities 80 — — 80 Equity securities 2 — — 2 Total $ 1,159 $ 4 $ (1 ) $ 1,162
Maturity Distribution Based on Contractual Terms of Investment Securities	The maturity distribution based on the contractual terms of the Company’s investment securities at June 30, 2017 was as follows: Available-For-Sale Amortized Cost Fair Value (in millions) Due within 1 year $ 440 $ 441 Due after 1 year through 5 years 735 735 Due after 5 years through 10 years — — Due after 10 years — — No contractual maturity 1 2 2 Total $ 1,177 $ 1,178 1 Equity securities have been included in the No contractual maturity category, as these securities do not have stated maturity dates.

Prepaid Expenses and Other As26

Prepaid Expenses and Other Assets (Tables)	6 Months Ended
	Jun. 30, 2017
Prepaid Expense and Other Assets [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consisted of the following: June 30, December 31, (in millions) Customer and merchant incentives $ 532 $ 479 Prepaid income taxes 172 118 Other 363 253 Total prepaid expenses and other current assets $ 1,067 $ 850
Schedule of Other Assets, Noncurrent	Other assets consisted of the following: June 30, December 31, (in millions) Customer and merchant incentives $ 1,357 $ 1,134 Nonmarketable equity investments 233 132 Prepaid income taxes 343 325 Income taxes receivable 159 175 Other 100 163 Total other assets $ 2,192 $ 1,929

Accrued Expenses and Accrued Li

Accrued Expenses and Accrued Litigation (Tables)	6 Months Ended
	Jun. 30, 2017
Accrued Liabilities, Current [Abstract]
Accrued Expenses	Accrued expenses consisted of the following: June 30, December 31, (in millions) Customer and merchant incentives $ 2,254 $ 2,286 Personnel costs 342 496 Advertising 75 71 Income and other taxes 258 161 Other 377 304 Total accrued expenses $ 3,306 $ 3,318

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Schedule of share repurchases and authorizations	The following table summarizes the Company’s share repurchase authorizations of its Class A common stock through June 30, 2017 , as well as historical purchases: Authorization Dates December 2016 December 2015 December 2014 Total (in millions, except average price data) Board authorization $ 4,000 $ 4,000 $ 3,750 $ 11,750 Dollar value of shares repurchased during the six months ended June 30, 2016 $ — $ 1,312 $ 507 $ 1,819 Remaining authorization at December 31, 2016 $ 4,000 $ 996 $ — $ 4,996 Dollar value of shares repurchased during the six months ended June 30, 2017 $ 897 $ 996 $ — $ 1,893 Remaining authorization at June 30, 2017 $ 3,103 $ — $ — $ 3,103 Shares repurchased during the six months ended June 30, 2016 — 14.6 5.7 20.3 Average price paid per share during the six months ended June 30, 2016 $ — $ 90.13 $ 89.76 $ 90.03 Shares repurchased during the six months ended June 30, 2017 7.5 9.1 — 16.6 Average price paid per share during the six months ended June 30, 2017 $ 118.16 $ 109.16 $ — $ 113.25 Cumulative shares repurchased through June 30, 2017 7.5 40.4 40.8 88.7 Cumulative average price paid per share $ 118.16 $ 99.10 $ 92.03 $ 97.48
Schedule of Changes in Common Stock Outstanding	The following table presents the changes in the Company’s outstanding Class A and Class B common stock for the six months ended June 30, 2017 : Outstanding Shares Class A Class B (in millions) Balance at December 31, 2016 1,062.4 19.3 Purchases of treasury stock (16.6 ) — Share-based payments 1.6 — Conversion of Class B to Class A common stock 3.4 (3.4 ) Balance at June 30, 2017 1,050.8 15.9

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes in the balances of each component of accumulated other comprehensive income (loss), net of tax, for the six months ended June 30, 2017 and 2016 were as follows: Foreign Currency Translation Adjustments 1 Translation Adjustments on Net Investment Hedge Defined Benefit Pension and Other Postretirement Plans Investment Securities Available-for-Sale Accumulated Other Comprehensive Income (Loss) (in millions) Balance at December 31, 2015 $ (663 ) $ (26 ) $ 13 $ — $ (676 ) Other comprehensive income (loss) for the period 2 — (23 ) (1 ) 3 (21 ) Balance at June 30, 2016 $ (663 ) $ (49 ) $ 12 $ 3 $ (697 ) Balance at December 31, 2016 $ (949 ) $ 12 $ 11 $ 2 $ (924 ) Other comprehensive income (loss) for the period 2 317 (90 ) (1 ) (1 ) 225 Balance at June 30, 2017 $ (632 ) $ (78 ) $ 10 $ 1 $ (699 ) 1 During the six months ended June 30, 2017 , the decrease in other comprehensive loss related to foreign currency translation adjustments was driven primarily by the appreciation of the euro. 2 During the six months ended June 30, 2017 and 2016 , gains and losses reclassified from Accumulated other comprehensive income to the consolidated statement of operations were not significant.

Share-Based Payments Awards Gra

Share-Based Payments Awards Granted (Tables)	6 Months Ended
	Jun. 30, 2017
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan	During the six months ended June 30, 2017 , the Company granted the following awards under the Mastercard Incorporated 2006 Long Term Incentive Plan, as amended and restated (“LTIP”). The LTIP is a shareholder-approved plan that permits the grant of various types of equity awards to employees. Grants in 2017 Weighted-Average Grant-Date Fair Value (in millions) Non-qualified stock options 1.7 $21 Restricted stock units 1.3 $110 Performance stock units 0.2 $126

Settlement and Other Risk Man31

Settlement and Other Risk Management (Tables)	6 Months Ended
	Jun. 30, 2017
Settlement and Other Risk Management [Abstract]
Estimated Settlement Exposure and Portion of Uncollateralized Settlement Exposure for Mastercard-Branded Transactions	The Company’s estimated settlement exposure from Mastercard, Cirrus and Maestro branded transactions was as follows: June 30, December 31, (in millions) Gross settlement exposure 1 $ 42,565 $ 39,523 Collateral held for settlement exposure (4,138 ) (3,734 ) Net uncollateralized settlement exposure $ 38,427 $ 35,789

Foreign Exchange Risk Managem32

Foreign Exchange Risk Management (Tables)	6 Months Ended
	Jun. 30, 2017
Foreign Currency Derivatives [Abstract]
Derivative contract summary	Mastercard’s derivative contracts are summarized below: June 30, 2017 December 31, 2016 Notional Estimated Fair Value Notional Estimated Fair Value (in millions) Commitments to purchase foreign currency $ 19 $ — $ 37 $ (2 ) Commitments to sell foreign currency 835 (24 ) 777 18 Options to sell foreign currency 7 — — — Balance sheet location Accounts receivable 1 $ 4 $ 29 Other current liabilities 1 (28 ) (13 ) 1 The derivative contracts are subject to enforceable master netting arrangements, which contain various netting and setoff provisions.
Gain (loss) recognized in income for the contracts to purchase and sell foreign currency summary	The amount of gain (loss) recognized in income for the contracts to purchase and sell foreign currency is summarized below: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in millions) Foreign currency derivative contracts General and administrative $ (17 ) $ 8 $ (45 ) $ (36 )

Summary of Significant Accoun33

Summary of Significant Accounting Policies Summary of Significant Accounting Policies Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess tax benefits	$ (451)	$ (382)	$ (848)	$ (760)
Diluted weighted-average shares outstanding	1,075	1,101	1,078	1,107
Diluted Earnings per Share	$ 1.10	$ 0.89	$ 2.09	$ 1.75
Increased cash provided by operating activities			$ 2,039	$ 2,119
Increased cash used in financing activities			(2,452)	(2,246)
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess tax benefits	$ 11		$ 31
Diluted weighted-average shares outstanding	1		1
Diluted Earnings per Share	$ 0.01		$ 0.03
Increased cash provided by operating activities			$ 46	52
Increased cash used in financing activities			$ 46	$ 52

Acquisitions Narrative (Details

Acquisitions Narrative (Details) £ in Millions, $ in Millions	Apr. 28, 2017GBP (£)	Apr. 28, 2017USD ($)	Jun. 30, 2017USD ($)	Apr. 28, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years 2 months	9 years 2 months
Cash consideration		$ 1,040
Contingent consideration				$ 197
Redeemable non-controlling Interests			$ 70	69	$ 0
Cash and cash equivalents				89
Other current assets				96
Other intangible assets				453
Goodwill			2,759	935	$ 1,756
Other assets				90
Total assets				1,663
Short-term debt				64
Other current liabilities				168
Net pension liability				66
Other liabilities				59
Total liabilities				357
Net assets acquired				$ 1,306
Business Combination, Consideration Transferred			1,200
VocaLink Holdings Limited [Member]
Business Acquisition [Line Items]
Redeemable non-controlling Interests	£ 58		75
VocaLink's shareholders option to sell ownership interest to Mastercard, first period	3 years	3 years
VocaLink's shareholders option to sell ownership interest to Mastercard, second period	5 years	5 years
Controlling interest to acquire per definitive agreement	92.40%			92.40%
Payments to acquire per definitive agreement	£ 719	$ 929
Potential earn-out per definitive agreement	£ 169		$ 220
Noncontrolling interest retained per definitive agreement	7.60%			7.60%
Noncontrolling interest retained per definitive agreement, term	3 years	3 years
Mastercard's option to purchase remaining interest from Vocalink's shareholders	5 years	5 years
Developed technologies
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years 6 months	8 years 6 months
Other intangible assets				$ 266
Customer relationships
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years 6 months	10 years 6 months
Other intangible assets				177
Other
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	2 years 10 months 25 days	2 years 10 months 25 days
Other intangible assets				$ 10

Earnings Per Share Schedule of

Earnings Per Share Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator
Net income	$ 1,177	$ 983	$ 2,258	$ 1,942
Denominator
Basic weighted-average shares outstanding	1,070	1,098	1,074	1,104
Dilutive stock options and stock units	5	3	4	3
Diluted weighted-average shares outstanding	1,075	1,101	1,078	1,107
Earnings per Share
Basic	$ 1.10	$ 0.89	$ 2.10	$ 1.76
Diluted	$ 1.10	$ 0.89	$ 2.09	$ 1.75

Fair Value and Investment Sec36

Fair Value and Investment Securities - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt, Fair Value	$ 5,500	$ 5,300
Long-term Debt, Carrying Value	5,326	5,180
Short-Term Investments | At Cost
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity Securities	604	452
Short-Term Investments | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity Securities	604	452
Long-Term Investments | At Cost
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity Securities, Noncurrent	$ 0	61
Long-Term Investments | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity Securities		$ 61

Fair Value and Investment Sec37

Fair Value and Investment Securities Distribution of Financial Instruments, Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures
Foreign currency derivative assets	$ 4	$ 29
Foreign currency derivative liabilities	(28)	(13)
Fair Value, Inputs, Level 1
Fair Value, Option, Quantitative Disclosures
Foreign currency derivative assets	0	0
Foreign currency derivative liabilities	0	0
Fair Value, Inputs, Level 2
Fair Value, Option, Quantitative Disclosures
Foreign currency derivative assets	4	29
Foreign currency derivative liabilities	(28)	(13)
Fair Value, Inputs, Level 3
Fair Value, Option, Quantitative Disclosures
Foreign currency derivative assets	0	0
Foreign currency derivative liabilities	0	0
Municipal securities
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	36	59
Municipal securities | Fair Value, Inputs, Level 1
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Municipal securities | Fair Value, Inputs, Level 2
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	36	59
Municipal securities | Fair Value, Inputs, Level 3
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Government and agency securities
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	165	166
Government and agency securities | Fair Value, Inputs, Level 1
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	59	49
Government and agency securities | Fair Value, Inputs, Level 2
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	106	117
Government and agency securities | Fair Value, Inputs, Level 3
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Corporate securities
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	901	855
Corporate securities | Fair Value, Inputs, Level 1
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Corporate securities | Fair Value, Inputs, Level 2
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	901	855
Corporate securities | Fair Value, Inputs, Level 3
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Asset-backed securities
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	74	80
Asset-backed securities | Fair Value, Inputs, Level 1
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Asset-backed securities | Fair Value, Inputs, Level 2
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	74	80
Asset-backed securities | Fair Value, Inputs, Level 3
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Equity securities
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	2	2
Equity securities | Fair Value, Inputs, Level 1
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	2	2
Equity securities | Fair Value, Inputs, Level 2
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	0	0
Equity securities | Fair Value, Inputs, Level 3
Fair Value, Option, Quantitative Disclosures
Fair Value, Measured on Recurring Basis	$ 0	$ 0

Fair Value and Investment Sec38

Fair Value and Investment Securities Available-for-Sale Investment Securities, Unrealized Gains and Losses (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Investment Identifier
Amortized Cost	$ 1,177	$ 1,159
Gross Unrealized Gain	2	4
Gross Unrealized Loss	(1)	(1)
Fair Value	1,178	1,162
Municipal securities
Investment Identifier
Amortized Cost	36	59
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Fair Value	36	59
Government and agency securities
Investment Identifier
Amortized Cost	165	165
Gross Unrealized Gain	0	1
Gross Unrealized Loss	0	0
Fair Value	165	166
Corporate securities
Investment Identifier
Amortized Cost	900	853
Gross Unrealized Gain	2	3
Gross Unrealized Loss	(1)	(1)
Fair Value	901	855
Asset-backed securities
Investment Identifier
Amortized Cost	74	80
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Fair Value	74	80
Equity securities
Investment Identifier
Amortized Cost	2	2
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Fair Value	$ 2	$ 2

Fair Value and Investment Sec39

Fair Value and Investment Securities Maturity Distribution Based on Contractual Terms of Investment Securities (Details) $ in Millions	Jun. 30, 2017USD ($)
Available-For-Sale Amortized Cost
Due within 1 year	$ 440
Due after 1 year through 5 years	735
Due after 5 years through 10 years	0
Due after 10 years	0
No contractual maturity	2
Total	1,177
Available-For-Sale Fair Value
Due within 1 year	441
Due after 1 year through 5 years	735
Due after 5 years through 10 years	0
Due after 10 years	0
No contractual maturity	2
Total	$ 1,178

Fair Value and Investment Sec40

Fair Value and Investment Securities Contingent Consideration Rollforward (Details) - Fair Value, Inputs, Level 3 - Contingent Consideration [Member] $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2016	$ 0
Preliminary estimated fair value as of acquisition date for businesses acquired	197
Net change in valuation	0
Foreign currency translation	2
Balance at June 30, 2017	$ 199

Prepaid Expenses and Other As41

Prepaid Expenses and Other Assets Schedule of Prepaid Expenses (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Prepaid Expense and Other Assets [Abstract]
Customer and merchant incentives	$ 532	$ 479
Prepaid income taxes	172	118
Other	363	253
Total prepaid expenses and other current assets	$ 1,067	$ 850

Prepaid Expenses and Other As42

Prepaid Expenses and Other Assets Schedule of Other Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Prepaid Expense and Other Assets [Abstract]
Purchase of non marketable equity securities	$ 121	$ 11
Customer and merchant incentives	1,357		$ 1,134
Nonmarketable equity investments	233		132
Prepaid income taxes	343		325
Income taxes receivable	159		175
Other	100		163
Total other assets	$ 2,192		$ 1,929

Accrued Expenses (Details)

Accrued Expenses (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Accrued Liabilities, Current [Abstract]
Customer and merchant incentives	$ 2,254	$ 2,286
Personnel costs	342	496
Advertising	75	71
Income and other taxes	258	161
Other	377	304
Total accrued expenses	$ 3,306	$ 3,318

Accrued Litigation Expense (Det

Accrued Litigation Expense (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Accrued Liabilities, Current [Abstract]
Provision for litigation	$ 736	$ 722

Stockholders' Equity Repurchase

Stockholders' Equity Repurchase Authorizations and Purchase Activity (Details) - Class A Common Stock - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended		7 Months Ended	19 Months Ended	31 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 06, 2016	Dec. 08, 2015	Dec. 02, 2014
Class of Stock
Board authorization	$ 11,750		$ 11,750	$ 11,750	$ 11,750
Dollar value of shares repurchased during period	1,893	$ 1,819
Remaining authorization	$ 3,103		3,103	3,103	$ 3,103	$ 4,996
Shares repurchased	16.6	20.3			88.7
Average price paid per share	$ 113.25	$ 90.03			$ 97.48
December 2016 Share Repurchase Plan
Class of Stock
Board authorization							$ 4,000
Dollar value of shares repurchased during period	$ 897	$ 0
Remaining authorization	$ 3,103		$ 3,103	3,103	$ 3,103	4,000
Shares repurchased	7.5	0	7.5
Average price paid per share	$ 118.16	$ 0	$ 118.16
December 2015 Share Repurchase Plan
Class of Stock
Board authorization								$ 4,000
Dollar value of shares repurchased during period	$ 996	$ 1,312
Remaining authorization	$ 0		$ 0	$ 0	0	996
Shares repurchased	9.1	14.6		40.4
Average price paid per share	$ 109.16	$ 90.13		$ 99.10
December 2014 Share Repurchase Plan
Class of Stock
Board authorization									$ 3,750
Dollar value of shares repurchased during period	$ 0	$ 507
Remaining authorization	$ 0		$ 0	$ 0	$ 0	$ 0
Shares repurchased	0	5.7			40.8
Average price paid per share	$ 0	$ 89.76			$ 92.03

Stockholders' Equity Common Sto

Stockholders' Equity Common Stock Shares Activity (Details) - shares shares in Millions	6 Months Ended		31 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017
Class A
Class of Stock
Purchases of treasury stock	(16.6)	(20.3)	(88.7)
Common Stock | Class A
Class of Stock
Balance at December 31, 2016	1,062.4
Purchases of treasury stock	(16.6)
Share-based payments	1.6
Conversion of Class B to Class A common stock	3.4
Balance at June 30, 2017	1,050.8		1,050.8
Common Stock | Class B
Class of Stock
Balance at December 31, 2016	19.3
Purchases of treasury stock	0
Share-based payments	0
Conversion of Class B to Class A common stock	(3.4)
Balance at June 30, 2017	15.9		15.9

Accumulated Other Comprehensi47

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Foreign Currency Translation Adjustments			$ (949)	$ (663)
Beginning Balance, Translation Adjustments on Net Investment Hedge			12	(26)
Beginning Balance, Defined Benefit Pension and Other Postretirement Plans			11	13
Beginning Balance, Investment Securities Available-for-Sale			2	0
Beginning Balance, Accumulated Other Comprehensive Income (Loss)			(924)	(676)
Current period other comprehensive income (loss), Foreign Currency Translation Adjustments	$ 232	$ (96)	317	0
Current period other comprehensive income (loss), Translation Adjustments on Net Investment Hedge	(68)	19	(90)	(23)
Current period other comprehensive income (loss), Defined Benefit Pension and Other Postretirement Plans	0	(1)	(1)	(1)
Current period other comprehensive income (loss), Investment Securities Available-for-Sale	0	1	(1)	3
Current period other comprehensive income (loss)	164	(77)	225	(21)
Ending Balance, Foreign Currency Translation Adjustments	(632)	(663)	(632)	(663)
Ending Balance, Translation Adjustments on Net Investment Hedge	(78)	(49)	(78)	(49)
Ending Balance, Defined Benefit Pension and Other Postretirement Plans	10	12	10	12
Ending Balance, Investment Securities Available-for-Sale	1	3	1	3
Ending Balance, Accumulated Other Comprehensive Income (Loss)	$ (699)	$ (697)	$ (699)	$ (697)

Share-Based Payments Narrative

Share-Based Payments Narrative (Details) shares in Millions	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Share-Based Payments
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares	1.7
Fair value of stock options, per share, estimated using a Black-Scholes option pricing model | $ / shares	$ 21
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	1 year
Share-Based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years
Share-Based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	19.30%
Non-qualified stock options
Share-Based Payments
Share-Based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-Based Compensation Arrangement By Share-based Payment Award Options Term	10 years
Restricted stock units
Share-Based Payments
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	1.3
Share-Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted-Average Grant-Date Fair Value | $ / shares	$ 110
Share-Based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Performance stock units
Share-Based Payments
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	0.2
Share-Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted-Average Grant-Date Fair Value | $ / shares	$ 126
Share-Based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate	27.70%	28.00%	27.30%	28.10%

Legal and Regulatory Proceedi50

Legal and Regulatory Proceedings (Details) $ in Millions, £ in Billions

1 Months Ended

3 Months Ended

6 Months Ended

62 Months Ended

Jan. 31, 2017USD ($)claimant

Jun. 30, 2015USD ($)

Oct. 31, 2011plaintiff

Feb. 28, 2011

Jun. 30, 2017USD ($)merchant

Mar. 31, 2017USD ($)claimant

Dec. 31, 2016USD ($)

Jun. 30, 2016USD ($)

Jun. 30, 2017GBP (£)

Jun. 30, 2017USD ($)merchant

Jun. 30, 2016USD ($)

Jun. 30, 2017USD ($)merchant

Legal And Regulatory

Accrued litigation

$ 736

$ 722

$ 736

$ 736

Restricted cash for litigation settlement

544

543

544

544

Provision for litigation settlement

0

$ 107

15

$ 107

Event Involving Visa Parties, Member Banks and Mastercard

Legal And Regulatory

Percent of settlement Mastercard would pay

12.00%

Event Involving Member Banks and Mastercard

Legal And Regulatory

Percent of settlement Mastercard would pay

36.00%

Canadian Competition Bureau

Legal And Regulatory

Amount of damages sought (that exceeds)

5,000

U.S. Merchant Lawsuit Settlement

Legal And Regulatory

Accrued litigation

$ 706

$ 706

$ 706

U.S. Merchant Litigation - Class Litigation

Legal And Regulatory

Approximate percentage of merchants that opted out of settlement (that exceeds)

25.00%

25.00%

25.00%

Canadian Merchant Litigation

Legal And Regulatory

Provision for litigation settlement

$ 15

Minimum | U.S. Merchant Litigation - Class Litigation

Legal And Regulatory

Legal proceeding complaints from merchants that have opted out of settlement | merchant

30

30

30

European Commission

Legal And Regulatory

Estimate of possible loss (that exceeds)

$ 1,000

$ 1,000

$ 1,000

United Kingdom Cross-border Interchange and Domestic Interchange

Legal And Regulatory

Amount of damages sought (that exceeds)

1,000

U.K. Merchant Lawsuit Settlement

Legal And Regulatory

Provision for litigation settlement

$ 61

$ 10

$ 107

Amount of damages sought (that exceeds)

$ 1,000

Mastercard's U.K. Interchange Volume Over the Relevant Damages Period (as a percent)

40.00%

U.K. Merchant claimants

Legal And Regulatory

Amount of damages sought (that exceeds)

$ 500

Number of claims settled | claimant

6

Number of plaintiffs in case | claimant

10

Proposed U.K. Interchange Collective Action

Legal And Regulatory

Amount of damages sought (that exceeds)

£ 14

$ 18,000

ATM Operators Complaint

Legal And Regulatory

Number of plaintiffs in case | plaintiff

13

Settlement and Other Risk Man51

Settlement and Other Risk Management Estimated Settlement Exposure and Portion of Uncollateralized Settlement Exposure for Mastercard-Branded Transactions (Details) - Guarantee Obligations - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Risks Inherent in Servicing Assets and Servicing Liabilities
Gross settlement exposure	$ 42,565	$ 39,523
Collateral held for settlement exposure	(4,138)	(3,734)
Net uncollateralized settlement exposure	$ 38,427	$ 35,789

Settlement and Other Risk Man52

Settlement and Other Risk Management Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Settlement and Other Risk Management [Abstract]
Travelers cheques outstanding, notional value	$ 397	$ 397
Travelers cheques covered by collateral arrangements	$ 313	$ 312

Foreign Exchange Risk Managem53

Foreign Exchange Risk Management Classification of Outstanding Forward Contracts (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Accounts receivable
Foreign Exchange Risk Management
Forward contracts to purchase and sell foreign currency - Balance sheet location - Accounts receivable	$ 4	$ 29
Other current liabilities
Foreign Exchange Risk Management
Forward contracts to purchase and sell foreign currency - Balance sheet location - Other current liabilities	(28)	(13)
Commitments to purchase foreign currency | Foreign Exchange Forward
Foreign Exchange Risk Management
Commitments/Options to purchase/sell foreign currency, Notional	19	37
Commitments/Options to purchase/sell foreign currency, Estimated Fair Value	0	(2)
Commitments/Options to sell foreign currency | Foreign Exchange Forward
Foreign Exchange Risk Management
Commitments/Options to purchase/sell foreign currency, Notional	835	777
Commitments/Options to purchase/sell foreign currency, Estimated Fair Value	(24)	18
Commitments/Options to sell foreign currency | Foreign Exchange Option
Foreign Exchange Risk Management
Commitments/Options to purchase/sell foreign currency, Notional	7	0
Commitments/Options to purchase/sell foreign currency, Estimated Fair Value	$ 0	$ 0

Foreign Exchange Risk Managem54

Foreign Exchange Risk Management (Details) € in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015EUR (€)
Foreign Exchange Risk Management
Terms of the foreign currency forward contracts and foreign currency option contracts, less than			18 months
Net foreign currency transaction pre-tax loss in AOCI	$ 122		$ 122
Foreign currency derivative contracts
Foreign Exchange Risk Management
Approximate effect of 10% adverse change in foreign currency rates on fair value loss	94		94
General and administrative | Foreign currency derivative contracts
Foreign Exchange Risk Management
Gain (loss) for contracts to purchase and sell foreign currency	$ (17)	$ 8	$ (45)	$ (36)
Net Investment Hedging
Foreign Exchange Risk Management
Derivative Liability, Notional Amount | €					€ 1,650