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Reportable Operating Segment (Tables) | 6 Months Ended
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Jun. 30, 2018
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] |
Operating segment information | The following t able presents certain selected financial information for our reportable operating segments and Corporate & Other:
Three Months Ended June 30, 2018(Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other(a) |  | Consolidated
Total non-interest revenues |  | $ | 3,678 |  | $ | 2,977 |  | $ | 1,513 |  | $ | 5 |  | $ | 8,173
Revenue from contracts with customers(b) |  |  | 2,596 |  |  | 2,581 |  |  | 1,495 |  |  | 2 |  |  | 6,674
Interest income |  |  | 1,994 |  |  | 393 |  |  | 7 |  |  | 146 |  |  | 2,540
Interest expense |  |  | 370 |  |  | 204 |  |  | (68) |  |  | 205 |  |  | 711
Total revenues net of interest expense |  |  | 5,302 |  |  | 3,166 |  |  | 1,588 |  |  | (54) |  |  | 10,002
Net income (loss) |  | $ | 770 |  | $ | 564 |  | $ | 543 |  | $ | (254) |  | $ | 1,623
Total assets (billions) |  | $ | 127 |  | $ | 53 |  | $ | 31 |  | $ | (26) |  | $ | 185
Six Months Ended June 30, 2018(Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other(a) |  | Consolidated
Total non-interest revenues |  | $ | 7,169 |  | $ | 5,815 |  | $ | 3,045 |  | $ | 21 |  | $ | 16,050
Revenue from contracts with customers(b) |  |  | 5,034 |  |  | 5,034 |  |  | 2,986 |  |  | 7 |  |  | 13,061
Interest income |  |  | 3,943 |  |  | 770 |  |  | 16 |  |  | 273 |  |  | 5,002
Interest expense |  |  | 697 |  |  | 375 |  |  | (127) |  |  | 387 |  |  | 1,332
Total revenues net of interest expense |  |  | 10,415 |  |  | 6,210 |  |  | 3,188 |  |  | (93) |  |  | 19,720
Net income (loss) |  | $ | 1,596 |  | $ | 1,110 |  | $ | 1,059 |  | $ | (508) |  | $ | 3,257
Total assets (billions) |  | $ | 127 |  | $ | 53 |  | $ | 31 |  | $ | (26) |  | $ | 185
Three Months Ended June 30, 2017(Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other(a) |  | Consolidated
Total non-interest revenues |  | $ | 3,345 |  | $ | 2,738 |  | $ | 1,518 |  | $ | 38 |  | $ | 7,639
Revenue from contracts with customers(b) |  |  | 2,368 |  |  | 2,372 |  |  | 1,481 |  |  | 3 |  |  | 6,224
Interest income |  |  | 1,616 |  |  | 334 |  |  | 9 |  |  | 95 |  |  | 2,054
Interest expense |  |  | 247 |  |  | 145 |  |  | (47) |  |  | 176 |  |  | 521
Total revenues net of interest expense |  |  | 4,714 |  |  | 2,927 |  |  | 1,574 |  |  | (43) |  |  | 9,172
Net income (loss) |  | $ | 615 |  | $ | 477 |  | $ | 476 |  | $ | (224) |  | $ | 1,344
Total assets (billions) |  | $ | 113 |  | $ | 47 |  | $ | 27 |  | $ | (20) |  | $ | 167
Six Months Ended June 30, 2017(Millions, except where indicated) |  | GCSG |  | GCS |  | GMNS |  | Corporate & Other(a) |  | Consolidated
Total non-interest revenues |  | $ | 6,482 |  | $ | 5,342 |  | $ | 2,980 |  | $ | 42 |  | $ | 14,846
Revenue from contracts with customers(b) |  |  | 4,564 |  |  | 4,614 |  |  | 2,888 |  |  | 6 |  |  | 12,072
Interest income |  |  | 3,160 |  |  | 653 |  |  | 24 |  |  | 162 |  |  | 3,999
Interest expense |  |  | 460 |  |  | 268 |  |  | (85) |  |  | 321 |  |  | 964
Total revenues net of interest expense |  |  | 9,182 |  |  | 5,727 |  |  | 3,089 |  |  | (117) |  |  | 17,881
Net income (loss) |  | $ | 1,288 |  | $ | 882 |  | $ | 909 |  | $ | (484) |  | $ | 2,595
Total assets (billions) |  | $ | 113 |  | $ | 47 |  | $ | 27 |  | $ | (20) |  | $ | 167
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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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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