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Reportable Operating Segments and Geographic Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |  |
Non-interest revenues | $ 6,761 | $ 6,440 | $ 19,927 | $ 19,734 |
Interest income | 2,242 | 1,764 | 6,237 | 5,654 |
Interest expense | 567 | 430 | 1,532 | 1,291 |
Total revenues, net of interest expense | 8,436 | 7,774 | 24,632 | 24,097 |
Net income | 1,356 | 1,142 | 3,933 | 4,583 |
Total assets | 168,577 | 153,000 | 168,577 | 153,000 | $ 158,893
Total equity | 21,085 | 21,000 | 21,085 | 21,000 | $ 20,501
U S Consumer Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Non-interest revenues | 1,976 | 1,849 | 5,832 | 5,947 |
Interest income | 1,509 | 1,178 | 4,186 | 3,847 |
Interest expense | 202 | 125 | 519 | 404 |
Total revenues, net of interest expense | 3,283 | 2,902 | 9,499 | 9,390 |
Net income | 475 | 401 | 1,384 | 2,162 |
Total assets | 87,700 | 79,000 | 87,700 | 79,000 |
Total equity | 7,100 | 8,000 | 7,100 | 8,000 |
International Consumer and Network Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Non-interest revenues | 1,277 | 1,205 | 3,719 | 3,587 |
Interest income | 271 | 231 | 752 | 692 |
Interest expense | 65 | 55 | 178 | 167 |
Total revenues, net of interest expense | 1,483 | 1,381 | 4,293 | 4,112 |
Net income | 286 | 155 | 713 | 571 |
Total assets | 38,900 | 34,000 | 38,900 | 34,000 |
Total equity | 2,900 | 3,000 | 2,900 | 3,000 |
Global Commercial Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Non-interest revenues | 2,360 | 2,240 | 6,999 | 6,710 |
Interest income | 351 | 282 | 1,004 | 913 |
Interest expense | 144 | 98 | 382 | 297 |
Total revenues, net of interest expense | 2,567 | 2,424 | 7,621 | 7,326 |
Net income | 529 | 466 | 1,447 | 1,527 |
Total assets | 52,700 | 47,000 | 52,700 | 47,000 |
Total equity | 7,300 | 7,000 | 7,300 | 7,000 |
Global Merchant Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Non-interest revenues | 1,088 | 1,044 | 3,191 | 3,172 |
Interest income | 0 | 0 | 1 | 1 |
Interest expense | (65) | (60) | (188) | (180) |
Total revenues, net of interest expense | 1,153 | 1,104 | 3,380 | 3,353 |
Net income | 368 | 359 | 1,161 | 1,089 |
Total assets | 26,700 | 23,000 | 26,700 | 23,000 |
Total equity | 2,600 | 2,000 | 2,600 | 2,000 |
Corporate and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Non-interest revenues | 60 | 102 | 186 | 318 |
Interest income | 111 | 73 | 294 | 201 |
Interest expense | 221 | 212 | 641 | 603 |
Total revenues, net of interest expense | (50) | (37) | (161) | (84) |
Net income | (302) | (239) | (772) | (766) |
Total assets | (38,000) | (30,000) | (38,000) | (30,000) |
Total equity | $ 1,100 | $ 1,000 | $ 1,100 | $ 1,000 |

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