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Business Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 18, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | $ 3,786 | $ 3,128 | $ 11,020 | $ 6,142
Operating income (loss) |  |  | 542 | 374 | 1,336 | 1,131
Corporate and Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 218 | 228 | 690 | 473
Operating income (loss) |  |  | (745) | (621) | (2,082) | (850)
Acceptance | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 1,454 | 1,012 | 4,078 | 1,012
Operating income (loss) |  |  | 423 | 296 | 985 | 296
Fintech | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 727 | 735 | 2,159 | 2,191
Operating income (loss) |  |  | 265 | 223 | 721 | 647
Payments | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 1,387 | 1,153 | 4,093 | 2,466
Operating income (loss) |  |  | 599 | 476 | 1,712 | 1,038
Processing and services revenue |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | [1] |  | 3,153 | 2,608 | 9,118 | 5,229
Processing and services revenue | Corporate and Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 10 | 47 | 51 | 148
Processing and services revenue | Acceptance | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 1,256 | 867 | 3,495 | 867
Processing and services revenue | Fintech | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 684 | 692 | 2,032 | 2,054
Processing and services revenue | Payments | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 1,203 | 1,002 | 3,540 | 2,160
Product revenue |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 633 | 520 | 1,902 | 913
Product revenue | Corporate and Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 208 | 181 | 639 | 325
Product revenue | Acceptance | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 198 | 145 | 583 | 145
Product revenue | Fintech | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | 43 | 43 | 127 | 137
Product revenue | Payments | Operating segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  |  | $ 184 | $ 151 | $ 553 | $ 306
Investment Services Business |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Controlling interest sold (as a percent) |  | 60.00% |  |  |  |
[1] | Includes processing and other fees charged to related party investments accounted for under the equity method of $62 million and $40 million for the three months ended September 30, 2020 and 2019, respectively, and $174 million and $58 million for the nine months ended September 30, 2020 and 2019, respectively (see Note 21).

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