| Document and Entity Information | Feb. 16, 2022 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | Mastercard Inc |
| Amendment Flag | false |
| Entity Central Index Key | 0001141391 |
| Document Type | 8-K |
| Document Period End Date | Feb. 16, 2022 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-32877 |
| Entity Tax Identification Number | 13-4172551 |
| Entity Address, Address Line One | 2000 Purchase Street |
| Entity Address, City or Town | Purchase |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10577 |
| City Area Code | (914) |
| Local Phone Number | 249-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Class B [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock |
| Trading Symbol | MA |
| Security Exchange Name | NYSE |
| One Point One Percent Notes Due 2022 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.100% Notes due 2022 |
| Trading Symbol | MA22 |
| Security Exchange Name | NYSE |
| Two Point One Percent Notes Due 2027 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 2.100% Notes due 2027 |
| Trading Symbol | MA27 |
| Security Exchange Name | NYSE |
| Two Point Five Percent Notes Due 2030 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 2.500% Notes due 2030 |
| Trading Symbol | MA30 |
| Security Exchange Name | NYSE |
