| Component: (Network and Table) | |
|---|---|
| Network | 2404407 - Disclosure - Balance Sheet Account Details - Summary of Inventory (Details) (http://www.illumina.com/role/BalanceSheetAccountDetailsSummaryOfInventoryDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001110803 (http://www.sec.gov/CIK) |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | Period [Axis] | |
|---|---|---|
2017-01-01 | 2016-01-03 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
Inventory [Abstract] | ||
Raw materials | ||
Work in process | ||
Finished goods | ||
Total inventory | 300,170,000 | 270,777,000 |