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Segments and Geographic Data (Tables)
12 Months Ended
Jan. 02, 2022
Segment Reporting [Abstract]  
Schedule of Operating Performance and Assets by Segment
 In millions202120202019
Revenue:
Core Illumina$4,519 $3,239 $3,543 
GRAIL12 — — 
Helix — 
Eliminations(5)— (1)
Consolidated revenue$4,526 $3,239 $3,543 
Depreciation and amortization:
Core Illumina$200 $187 $186 
GRAIL51 — — 
Helix — 
Eliminations  — (1)
Consolidated depreciation and amortization$251 $187 $188 
Income (loss) from operations:
Core Illumina$808 $580 $1,008 
GRAIL(931)— — 
Helix — (24)
Eliminations — 
Consolidated (loss) income from operations$(123)$580 $985 

Total other income, net primarily relates to Core Illumina and we do not allocate income taxes to our segments.

In millionsJanuary 2,
2022
January 3,
2021
December 29,
2019
Total assets:
Core Illumina$5,571 $7,585 $7,316 
GRAIL9,649 — — 
Helix — — 
Eliminations(3)— — 
Consolidated total assets$15,217 $7,585 $7,316 
Capital expenditures:
Core Illumina$201 $189 $209 
GRAIL8 — — 
Eliminations(1)— — 
Consolidated capital expenditures$208 $189 $209 
Schedule of Net Long-lived Assets Consisting of Property and Equipment by Region Net long-lived assets, consisting of property and equipment and operating lease right-of-use assets, by region, were as follows:
In millionsJanuary 2,
2022
January 3,
2021
United States$1,281 $1,134 
Singapore218 150 
United Kingdom146 141 
Other countries51 29 
Total net long-lived assets$1,696 $1,454