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SUPPLEMENTAL BALANCE SHEET DETAILS
 6 Months Ended
Jun. 29, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
SUPPLEMENTAL BALANCE SHEET DETAILS
7. SUPPLEMENTAL BALANCE SHEET DETAILS
Accounts Receivable
In millionsJune 29,
2025		December 29,
2024
Trade accounts receivable, gross$709 $744 
Allowance for credit losses(8)(9)
Total accounts receivable, net$701 $735 
Inventory
In millionsJune 29,
2025		December 29,
2024
Raw materials$227 $225 
Work in process419 404 
Finished goods47 31 
Inventory, gross693 660 
Inventory reserve(118)(113)
Total inventory, net$575 $547 
Accrued Liabilities
In millionsJune 29,
2025		December 29,
2024
Contract liabilities, current portion$247 $260 
Accrued compensation expenses (1)
214 252 
Accrued taxes payable75 101 
Operating lease liabilities, current portion79 79 
Other, including warranties (2)
147 135 
Total accrued liabilities$762 $827 
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(1)Includes employee separation costs related to restructuring activities.
(2)See table below for changes in the reserve for product warranties.
Changes in the reserve for product warranties were as follows:
In millionsQ2 2025Q2 2024YTD 2025YTD 2024
Balance at beginning of period$17 $20 $18 $21 
Additions charged to cost of product revenue6 10 14 22 
Repairs and replacements(7)(13)(16)(26)
Balance at end of period$16 $17 $16 $17 
We generally provide a one-year warranty on instruments. Additionally, we provide a warranty on consumables through the expiration date, which generally ranges from six to twelve months after the manufacture date. At the time revenue is recognized, an accrual is established for estimated warranty expenses based on historical experience as well as anticipated product performance. We periodically review the warranty reserve for adequacy and adjust the warranty accrual, if necessary, based on actual experience and estimated costs to be incurred. Warranty expense is recorded as a component of cost of product revenue.
Restructuring
In 2023, we implemented a cost reduction initiative that included workforce reductions, consolidation of certain facilities and other actions to reduce expenses, all as part of a plan to realign operating expenses while maintaining focus on our innovation roadmap and sustainable long-term growth. In Q1 2025, we implemented an incremental cost reduction initiative that included optimizing stock-based compensation and non-labor spending, as well as workforce reductions, to help mitigate the expected impact of a reduction in revenue and operating income from our Greater China business and the uncertainty in the U.S. government’s funding of the National Institutes of Health.
A summary of the pre-tax restructuring charges is as follows:

In millionsQ2 2025Q2 2024YTD 2025YTD 2024
Cumulative charges recorded since inception
Employee separation costs$8 $3 $39 $7 $99 
Asset impairment charges (1)
— — — 32 146 
Other costs— 1 — 1 8 
Total restructuring charges (2)
$8 $4 $39 $40 $253 
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(1)For YTD 2024, primarily relates to impairment of right-of-use assets and leasehold improvements for our Foster City campus.
(2)For Q2 2025, $4 million was recorded in R&D expense, $3 million in SG&A expense, with remainder in cost of revenue.
For YTD 2025, $22 million was recorded in SG&A expense, $14 million in R&D expense, with remainder in cost of revenue.
For Q2 2024, $4 million was recorded in SG&A expense. For YTD 2024, $39 million was recorded in SG&A expense, with remainder in R&D expense. Restructuring charges for Q2 2024 and YTD 2024 primarily related to Core Illumina segment.
In Q1 2024, we recorded right-of-use asset impairments of $18 million related to our campus in Foster City, California and another property in San Diego, California. The impairments were determined by comparing the fair values of the impacted right-of-use assets to the carrying values of the assets as of the impairment measurement date. The fair values of the right-of-use assets were estimated using the discounted future cash flows method, which includes estimates and assumptions for future sublease rental rates that reflect current sublease market conditions, as well as discount rates. The estimates and assumptions used in our assessments represent Level 3 measurements because they are supported by little or no market activity and reflect our own assumptions in measuring fair value. We also recorded $14 million of leasehold improvement impairments, in Q1 2024, related to our Foster City campus. The impairments were recognized in selling, general and administrative expense.
A summary of restructuring liability activity during YTD 2025 is as follows:

In millions
Employee Separation Costs (1)
Other CostsTotal
Amount recorded in accrued liabilities as of December 29, 2024
$2 $2 $4 
Additional expense recorded
39 — 39 
Cash payments
(20)(2)(22)
Adjustments to accrual
(2)— (2)
Amount recorded in accrued liabilities as of June 29, 2025
$19 $— $19 
Estimated costs to still be incurred
$(3)$— $(3)
_____________
(1)It is expected that substantially all of the employee separation related charges will be incurred and paid by the end of Q4 2025.
Goodwill and Intangible Assets
Goodwill is reviewed for impairment annually, during the second quarter, or more frequently if an event occurs indicating the potential for impairment. We performed our annual assessment in Q2 2025, noting no impairment.
We regularly perform reviews to determine if an event has occurred that may indicate identifiable intangible assets are potentially impaired. During Q2 2025, we performed a recoverability test when the planned use of a finite-lived intangible asset changed, resulting in an impairment charge of $23 million recorded in cost of product revenue. We concluded the carrying value of the intangible asset exceeded its estimated fair value, which was determined using a discounted cash flow model that included estimates and assumptions for projected future cash flows. The estimates and assumptions used in our assessment of fair value represent Level 3 measurements as they are supported by little or no market activity and reflect our own assumptions in measuring fair value.
Derivative Financial Instruments
We are exposed to foreign exchange rate risks in the normal course of business and use derivative financial instruments to partially offset this exposure. We do not use derivative financial instruments for speculative or trading purposes. Foreign exchange contracts are carried at fair value in other current assets, other assets, accrued liabilities, or other long-term liabilities, as appropriate, on the condensed consolidated balance sheets. The cash flows associated with such foreign exchange contracts are classified as cash flows from operating activities in the condensed consolidated statements of cash flows, which is the same category as the hedged transaction.
We use foreign exchange forward contracts to manage foreign currency risks related to monetary assets and liabilities denominated in currencies other than the U.S. dollar. These derivative financial instruments have terms of one month or less and are not designated as hedging instruments. Changes in fair value of these derivatives are recognized in other income (expense), net, along with the re-measurement gain or loss on the foreign currency denominated assets or liabilities. As of June 29, 2025, we had foreign exchange forward contracts in place to hedge exposures in the euro, Japanese yen, Australian dollar, Canadian dollar, Singapore dollar, Chinese Yuan Renminbi, and British pound. As of June 29, 2025 and December 29, 2024, the total notional amounts of outstanding forward contracts in place for these foreign currency purchases were $483 million and $477 million, respectively.
We use foreign currency forward contracts to hedge portions of our foreign currency exposure associated with forecasted revenue transactions. These derivative financial instruments have terms up to 24 months and are designated as cash flow hedges. Changes in fair value of our cash flow hedges are recorded as a component of accumulated other comprehensive (loss) income and are reclassified to revenue in the same period the underlying hedged transactions are recorded. We regularly review the effectiveness of our hedges and consider them to be ineffective if it becomes probable that the forecasted transactions will not occur in the identified period. Changes in fair value of the ineffective portions of our cash flow hedges, if any, are recognized in other income (expense), net. As of June 29, 2025, we had foreign currency forward contracts in place to hedge exposures associated with forecasted revenue transactions denominated in the euro, Japanese yen, Australian dollar, Canadian dollar, and Chinese Yuan Renminbi. As of June 29, 2025 and December 29, 2024, the total notional amounts of outstanding cash flow hedge contracts in place for these foreign currency purchases were $689 million and $621 million, respectively. We recognized a loss of $2 million and a gain of $5 million in revenue in Q2 2025 and YTD 2025, respectively. We recognized gains of $4 million and $7 million in revenue in Q2 2024 and YTD 2024, respectively. As of June 29, 2025, the fair value of foreign currency forward contracts recorded in total assets and total liabilities was $2 million and $32 million, respectively. As of December 29, 2024, the fair value of foreign currency forward contracts was $27 million, recorded in total assets. Estimated losses reported in accumulated other comprehensive (loss) income expected to be recognized into earnings in the next 12 months are $22 million as of June 29, 2025.
Indemnification Liability
In connection with the GRAIL acquisition, we assumed a performance-based award for which vesting was based on GRAIL’s future revenues and had an aggregate potential value of up to $78 million. This award was assumed by GRAIL in connection with the Spin-Off. For a period of 2.5 years following the Spin-Off, we are obligated to indemnify GRAIL for cash payments that become earned and payable related to the award. The indemnification is accounted for in accordance with ASC 460. As of both June 29, 2025 and December 29, 2024, we recognized a non-contingent liability of $1 million related to this indemnification.