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Reportable Operating Segment | 3 Months Ended
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Mar. 31, 2019
Segment Reporting [Abstract] |
Reportable Operating Segments | 16. Reportable Operating Segments During 2018, we realigned our reportable operating segments and also made changes to the methodology used to allocate certain corporate overhead costs to the operating segments and our intercompany settlement process. Effective for the first quarter of 2019, we moved intercompany assets and liabilities, previously recorded in the operatin g segments, to Corporate & Other. For all of the above referenced changes, p rior period amounts have been revised to conform to the current period presentation. The following table presents certain selected financial information for our reportable operat ing segments and Corporate & Other as of or for the three months ended March 31:
2019 (Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other(a) |  | Consolidated
Total non-interest revenues |  | $ | 3,741 |  | $ | 3,020 |  | $ | 1,525 |  | $ | 19 |  | $ | 8,305
Revenue from contracts with customers(b) |  |  | 2,578 |  |  | 2,607 |  |  | 1,503 |  |  | 9 |  |  | 6,697
Interest income |  |  | 2,272 |  |  | 454 |  |  | 9 |  |  | 219 |  |  | 2,954
Interest expense |  |  | 459 |  |  | 241 |  |  | (93) |  |  | 288 |  |  | 895
Total revenues net of interest expense |  |  | 5,554 |  |  | 3,233 |  |  | 1,627 |  |  | (50) |  |  | 10,364
Net income (loss) |  | $ | 821 |  | $ | 586 |  | $ | 631 |  | $ | (488) |  | $ | 1,550
Total assets (billions) |  | $ | 99 |  | $ | 54 |  | $ | 22 |  | $ | 22 |  | $ | 197
2018 (Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other(a) |  | Consolidated
Total non-interest revenues |  | $ | 3,491 |  | $ | 2,838 |  | $ | 1,532 |  | $ | 16 |  | $ | 7,877
Revenue from contracts with customers(b) |  |  | 2,438 |  |  | 2,454 |  |  | 1,491 |  |  | 4 |  |  | 6,387
Interest income |  |  | 1,949 |  |  | 377 |  |  | 9 |  |  | 127 |  |  | 2,462
Interest expense |  |  | 327 |  |  | 171 |  |  | (59) |  |  | 182 |  |  | 621
Total revenues net of interest expense |  |  | 5,113 |  |  | 3,044 |  |  | 1,600 |  |  | (39) |  |  | 9,718
Net income (loss) |  | $ | 826 |  | $ | 546 |  | $ | 516 |  | $ | (254) |  | $ | 1,634
Total assets (billions) |  | $ | 91 |  | $ | 51 |  | $ | 20 |  | $ | 18 |  | $ | 180
Corporate & Other includes adjustments and eliminations for intersegment activity. Includes discount revenue, certain other fees and commissions and other revenues from customers.

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- References No definition available. + Details
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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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