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Reportable Operating Segments | 3 Months Ended
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Mar. 31, 2020
Segment Reporting [Abstract] |
Reportable Operating Segments | Reportable Operating Segments Effective for the first quarter of 2020, we made certain enhancements to our transfer pricing methodology related to the sharing of revenues between our card issuing, network and merchant businesses, and our methodology related to the allocation of certain funding costs primarily related to our Card Member loan and Card Member receivable portfolios. These enhancements resulted in certain changes to Non-interest revenues, Interest expense and operating expenses across our reportable operating segments. Prior period amounts have been revised to conform to the current period presentation. These changes had no impact on our Consolidated Results of Operations. The following table presents certain selected financial information for our reportable operating segments and Corporate & Other as of or for the three months ended March 31:
Three Months Ended March 31, 2020 (Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other (a) |  | Consolidated
Total non-interest revenues |  | $ | 3,894 |  |  | $ | 2,788 |  |  | $ | 1,346 |  |  | $ | (48) |  |  | $ | 7,980 |
Revenue from contracts with customers (b) |  | 2,693 |  |  | 2,372 |  |  | 1,245 |  |  | (14) |  |  | 6,296 |
Interest income |  | 2,411 |  |  | 499 |  |  | 6 |  |  | 130 |  |  | 3,046 |
Interest expense |  | 328 |  |  | 200 |  |  | (36) |  |  | 224 |  |  | 716 |
Total revenues net of interest expense |  | 5,977 |  |  | 3,087 |  |  | 1,388 |  |  | (142) |  |  | 10,310 |
Net income (loss) |  | $ | 201 |  |  | $ | 38 |  |  | $ | 417 |  |  | $ | (289) |  |  | $ | 367 |
Total assets (billions) |  | $ | 87 |  |  | $ | 47 |  |  | $ | 10 |  |  | $ | 42 |  |  | $ | 186 |
Three Months Ended March 31, 2019 (Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other (a) |  | Consolidated
Total non-interest revenues |  | $ | 3,912 |  |  | $ | 2,926 |  |  | $ | 1,449 |  |  | $ | 18 |  |  | $ | 8,305 |
Revenue from contracts with customers (b) |  | 2,824 |  |  | 2,541 |  |  | 1,330 |  |  | 2 |  |  | 6,697 |
Interest income |  | 2,272 |  |  | 454 |  |  | 9 |  |  | 219 |  |  | 2,954 |
Interest expense |  | 435 |  |  | 256 |  |  | (80) |  |  | 284 |  |  | 895 |
Total revenues net of interest expense |  | 5,749 |  |  | 3,124 |  |  | 1,538 |  |  | (47) |  |  | 10,364 |
Net income (loss) |  | $ | 954 |  |  | $ | 512 |  |  | $ | 571 |  |  | $ | (487) |  |  | $ | 1,550 |
Total assets (billions) |  | $ | 99 |  |  | $ | 54 |  |  | $ | 22 |  |  | $ | 22 |  |  | $ | 197 |
(a)Corporate & Other includes adjustments and eliminations for intersegment activity. (b)Includes discount revenue, certain other fees and commissions and other revenues from customers.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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