XML 31 R16.htm IDEA: XBRL DOCUMENT v3.24.2.u1
SEGMENT INFORMATION
 6 Months Ended
Jun. 30, 2024
Segment Reporting [Abstract]  
SEGMENT INFORMATION
10. SEGMENT INFORMATION
We have two reportable segments, Core Illumina and GRAIL. We completed the Spin-Off of GRAIL on June 24, 2024. Refer to note 2. GRAIL Spin-Off for additional details. We report segment information based on the management approach, which designates the internal reporting used by the Chief Operating Decision Maker (CODM) for making decisions and assessing performance as the source of our reportable segments. The CODM allocates resources and assesses the performance of each operating segment using information about its revenue and income (loss) from operations. Our CODM does not evaluate our operating segments using discrete asset information. We do not allocate expenses between segments. Core Illumina sells products and provides services to GRAIL, and vice versa, in accordance with contractual agreements between the entities.
Core Illumina: Core Illumina’s products and services serve customers in the research, clinical and applied markets, and enable the adoption of a variety of genomic solutions. Core Illumina includes all of our operations, excluding the results of GRAIL.
GRAIL: GRAIL is a healthcare company focused on early detection of multiple cancers.
In millionsQ2 2024Q2 2023YTD 2024YTD 2023
Revenue:
Core Illumina$1,092 $1,159 $2,148 $2,235 
GRAIL29 22 55 42 
Eliminations(9)(5)(15)(14)
Consolidated revenue$1,112 $1,176 $2,188 $2,263 
Income (loss) from operations:
Core Illumina$442 $115 $558 $257 
GRAIL(2,078)(204)(2,305)(408)
Eliminations(1)1 (2)(1)
Consolidated loss from operations$(1,637)$(88)$(1,749)$(152)
Total other expense, net primarily relates to Core Illumina, and we do not allocate income taxes to our segments.