v3.8.0.1

Quarterly Financial Information (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Summary of Quarterly Data | Summarized quarterly data for fiscal years 2017 and 2016 are as follows (in millions, except per share amounts):
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2017 |  |  |  |  |  |  |  |  |  |  |
Total revenue | $ | 598 |  |  | $ | 662 |  |  | $ | 714 |  |  | $ | 778 |
Gross profit | $ | 368 |  |  | $ | 434 |  |  | $ | 482 |  |  | $ | 542 |
Consolidated net income | $ | 348 |  |  | $ | 120 |  |  | $ | 152 |  |  | $ | 58 |
Net income attributable to Illumina stockholders (a) | $ | 367 |  |  | $ | 128 |  |  | $ | 163 |  |  | $ | 68 |
Earnings per share attributable to Illumina stockholders: |  |  |  |  |  |  |
Basic | $ | 2.50 |  |  | $ | 0.87 |  |  | $ | 1.12 |  |  | $ | 0.47 |
Diluted | $ | 2.48 |  |  | $ | 0.87 |  |  | $ | 1.11 |  |  | $ | 0.46 |
2016 |  |  |  |  |  |  |
Total revenue | $ | 572 |  |  | $ | 600 |  |  | $ | 607 |  |  | $ | 619 |
Gross profit | $ | 397 |  |  | $ | 424 |  |  | $ | 426 |  |  | $ | 419 |
Consolidated net income | $ | 88 |  |  | $ | 116 |  |  | $ | 117 |  |  | $ | 108 |
Net income attributable to Illumina stockholders | $ | 90 |  |  | $ | 120 |  |  | $ | 129 |  |  | $ | 124 |
Earnings per share attributable to Illumina stockholders: |  |  |  |  |  |  |
Basic | $ | 0.61 |  |  | $ | 0.83 |  |  | $ | 0.88 |  |  | $ | 0.84 |
Diluted | $ | 0.60 |  |  | $ | 0.82 |  |  | $ | 0.87 |  |  | $ | 0.84 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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