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Revenue (Tables) | 6 Months Ended
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Mar. 31, 2026
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following tables disaggregate the Company’s net revenue by revenue category and by geography:
| Three Months Ended March 31, |  | Six Months Ended March 31,
| 2026 |  | 2025 |  | 2026 |  | 2025
| (in millions)
Service revenue | $ | 4,981 |  |  | $ | 4,399 |  |  | $ | 9,741 |  |  | $ | 8,607 |
Data processing revenue | 5,543 |  |  | 4,701 |  |  | 11,087 |  |  | 9,446 |
International transaction revenue | 3,631 |  |  | 3,291 |  |  | 7,283 |  |  | 6,733 |
Other revenue | 1,320 |  |  | 937 |  |  | 2,534 |  |  | 1,849 |
Client incentives | (4,245) |  |  | (3,734) |  |  | (8,514) |  |  | (7,531) |
Net revenue | $ | 11,230 |  |  | $ | 9,594 |  |  | $ | 22,131 |  |  | $ | 19,104 |
| Three Months Ended March 31, |  | Six Months Ended March 31,
| 2026 |  | 2025 |  | 2026 |  | 2025
| (in millions)
U.S. | $ | 4,319 |  |  | $ | 3,811 |  |  | $ | 8,482 |  |  | $ | 7,549 |
International | 6,911 |  |  | 5,783 |  |  | 13,649 |  |  | 11,555 |
Net revenue | $ | 11,230 |  |  | $ | 9,594 |  |  | $ | 22,131 |  |  | $ | 19,104 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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