Segment Information (Details) $ in Millions |
3 Months Ended | |
---|---|---|
Mar. 29, 2020
USD ($)
segment
|
Mar. 31, 2019
USD ($)
|
|
Segment Reporting [Abstract] | ||
Number of reportable segments | segment | 1 | |
Segment Reporting Information [Line Items] | ||
Revenue | $ 859 | $ 846 |
Income (loss) from operations | 189 | 204 |
Operating Segments | Core Illumina | ||
Segment Reporting Information [Line Items] | ||
Revenue | 859 | 846 |
Income (loss) from operations | 189 | 221 |
Operating Segments | Helix | ||
Segment Reporting Information [Line Items] | ||
Revenue | 0 | 1 |
Income (loss) from operations | 0 | (18) |
Elimination of intersegment | ||
Segment Reporting Information [Line Items] | ||
Revenue | 0 | (1) |
Income (loss) from operations | $ 0 | $ 1 |