$ILMN
ILLUMINA, INC. Stock $ilmn

$ilmn Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000111080320000018 Filed on February 11, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$953.0M	$867.0M	$830.0M
YoY Change	9.92%	11.44%	25.38%
Cost Of Revenue	$290.0M	$277.0M	$256.0M
YoY Change	4.69%	19.4%	12.28%
Gross Profit	$662.0M	$590.0M	$597.0M
YoY Change	12.2%	8.86%	37.56%
Gross Profit Margin	69.46%	68.05%	71.93%
Selling, General & Admin	$233.0M	$217.0M	$197.0M
YoY Change	7.37%	29.94%	22.36%
% of Gross Profit	35.2%	36.78%	33.0%
Research & Development	$161.0M	$176.0M	$159.0M
YoY Change	-8.52%	31.34%	22.31%
% of Gross Profit	24.32%	29.83%	26.63%
Depreciation & Amortization	$45.00M	$50.00M	$45.00M
YoY Change	-10.0%	21.95%	18.42%
% of Gross Profit	6.8%	8.47%	7.54%
Operating Expenses	$394.0M	$393.0M	$356.0M
YoY Change	0.25%	30.56%	22.34%
Operating Profit	$268.0M	$197.0M	$241.0M
YoY Change	36.04%	8.84%	68.53%
Interest Expense	$1.000M	-$7.000M	$15.00M
YoY Change	-114.29%	-170.0%	87.5%
% of Operating Profit	0.37%	-3.55%	6.22%
Other Income/Expense, Net		$19.00M	-$9.000M
YoY Change		-416.67%	350.0%
Pretax Income	$269.0M	$209.0M	$232.0M
YoY Change	28.71%	19.43%	64.54%
Income Tax	$30.00M	$12.00M	$44.00M
% Of Pretax Income	11.15%	5.74%	18.97%
Net Earnings	$239.0M	$210.0M	$199.0M
YoY Change	13.81%	208.82%	55.47%
Net Earnings / Revenue	25.08%	24.22%	23.98%
Basic Earnings Per Share	$1.63	$1.43	$1.35
Diluted Earnings Per Share	$1.61	$1.41	$1.33
COMMON SHARES
Basic Shares Outstanding	147.0M shares	147.0M shares	147.0M shares
Diluted Shares Outstanding			149.0M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.414B	$3.512B	$2.512B
YoY Change	-2.79%	72.07%	32.7%
Cash & Equivalents	$2.042B	$1.144B	$1.346B
Short-Term Investments	$1.372B	$2.368B	$1.168B
Other Short-Term Assets	$105.0M	$78.00M	$68.00M
YoY Change	34.62%	44.44%	-1.45%
Inventory	$359.0M	$386.0M	$374.0M
Prepaid Expenses
Receivables	$573.0M	$514.0M	$433.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.451B	$4.490B	$4.262B
YoY Change	-0.87%	50.67%	61.26%
LONG-TERM ASSETS
Property, Plant & Equipment	$889.0M	$1.075B	$1.060B
YoY Change	-17.3%	15.47%	26.64%
Goodwill	$824.0M	$831.0M	$831.0M
YoY Change	-0.84%	7.78%	7.78%
Intangibles	$145.0M	$185.0M	$195.0M
YoY Change	-21.62%	5.71%	-0.51%
Long-Term Investments	$53.00M	$29.00M
YoY Change	82.76%	107.14%
Other Assets	$388.0M	$308.0M	$325.0M
YoY Change	25.97%	-1.28%	5.52%
Total Long-Term Assets	$2.865B	$2.469B	$2.497B
YoY Change	16.04%	8.43%	12.73%
TOTAL ASSETS
Total Short-Term Assets	$4.451B	$4.490B	$4.262B
Total Long-Term Assets	$2.865B	$2.469B	$2.497B
Total Assets	$7.316B	$6.959B	$6.759B
YoY Change	5.13%	32.38%	39.13%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$149.0M	$184.0M	$156.0M
YoY Change	-19.02%	15.0%	-10.86%
Accrued Expenses	$516.0M	$513.0M	$450.0M
YoY Change	0.58%	18.75%	19.05%
Deferred Revenue	$167.0M	$175.0M	$154.0M
YoY Change	-4.57%	16.67%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$1.107B	$1.107B
YoY Change	-100.0%	10970.0%	22040.0%
Total Short-Term Liabilities	$665.0M	$1.804B	$1.735B
YoY Change	-63.14%	141.82%	154.4%
LONG-TERM LIABILITIES
Long-Term Debt	$1.141B	$890.0M	$860.0M
YoY Change	28.2%	-24.7%	-26.43%
Other Long-Term Liabilities	$202.0M	$359.0M	$352.0M
YoY Change	-43.73%	-0.28%	66.04%
Total Long-Term Liabilities	$1.343B	$1.249B	$1.212B
YoY Change	7.53%	-19.0%	-12.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$665.0M	$1.804B	$1.735B
Total Long-Term Liabilities	$1.343B	$1.249B	$1.212B
Total Liabilities	$2.008B	$3.053B	$2.947B
YoY Change	-34.23%	33.44%	42.85%
SHAREHOLDERS EQUITY
Retained Earnings	$4.067B	$3.083B	$2.872B
YoY Change	31.92%	36.66%	41.83%
Common Stock	$2.000M	$2.000M	$2.000M
YoY Change	0.0%	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.021B	$2.616B	$2.462B
YoY Change	15.48%	11.75%	14.62%
Treasury Stock Shares	47.00M shares	45.00M shares
Shareholders Equity	$4.613B	$3.758B	$3.503B
YoY Change
Total Liabilities & Shareholders Equity	$7.316B	$6.959B	$6.759B
YoY Change	5.13%	32.38%	39.13%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$239.0M	$210.0M	$199.0M
YoY Change	13.81%	208.82%	55.47%
Depreciation, Depletion And Amortization	$45.00M	$50.00M	$45.00M
YoY Change	-10.0%	21.95%	18.42%
Cash From Operating Activities	$443.0M	$300.0M	$295.0M
YoY Change	47.67%	27.66%	65.73%
INVESTING ACTIVITIES
Capital Expenditures	-$57.00M	-$65.00M	-$77.00M
YoY Change	-12.31%	-22.62%	11.59%
Acquisitions
YoY Change
Other Investing Activities	-$47.00M	-$283.0M	-$460.0M
YoY Change	-83.39%	2076.92%	-542.31%
Cash From Investing Activities	-$104.0M	-$348.0M	-$537.0M
YoY Change	-70.11%	258.76%	-1634.29%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-115.0M	-154.0M	30.00M
YoY Change	-25.32%	2980.0%	25.0%
NET CHANGE
Cash From Operating Activities	443.0M	300.0M	295.0M
Cash From Investing Activities	-104.0M	-348.0M	-537.0M
Cash From Financing Activities	-115.0M	-154.0M	30.00M
Net Change In Cash	224.0M	-202.0M	-212.0M
YoY Change	-210.89%	-251.88%	-189.45%
FREE CASH FLOW
Cash From Operating Activities	$443.0M	$300.0M	$295.0M
Capital Expenditures	-$57.00M	-$65.00M	-$77.00M
Free Cash Flow	$500.0M	$365.0M	$372.0M
YoY Change	36.99%	14.42%	50.61%

Facts In Submission

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CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-29
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	194000000	shares
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CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	147000000	shares
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CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
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CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-29
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-35406
CY2019	dei	Entity Registrant Name EntityRegistrantName	Illumina, Inc.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	33-0804655
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	200 Illumina Way
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	San Diego
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	92122
CY2019	dei	City Area Code CityAreaCode	858
CY2019	dei	Local Phone Number LocalPhoneNumber	202-4500
CY2019	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2019	dei	Trading Symbol TradingSymbol	ILMN
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.56
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.92
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147000000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147000000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146000000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149000000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149000000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	148000000	shares
CY2019	us-gaap	Profit Loss ProfitLoss	990000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	782000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	678000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	996000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	782000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	678000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-12000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-44000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-48000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1008000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	826000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	726000000	USD
CY2017Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2270000000	USD
CY2017	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	719000000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-248000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	164000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	136000000	USD
CY2017	us-gaap	Reclassifications Of Temporary To Permanent Equity ReclassificationsOfTemporaryToPermanentEquity	-13000000	USD
CY2017Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	48000000	USD
CY2017	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	55000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2749000000	USD
CY2018	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	816000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	-127000000	USD
CY2018	us-gaap	Reclassifications Of Temporary To Permanent Equity ReclassificationsOfTemporaryToPermanentEquity	-2000000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-229000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	193000000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	5000000	USD
CY2018	ilmn	Contributions From Non Redeemable Noncontrolling Interests ContributionsFromNonRedeemableNoncontrollingInterests	92000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	93000000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	1000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3845000000	USD
CY2019	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	999000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6000000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-346000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	194000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	-16000000	USD
CY2019	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	82000000	USD
CY2019	us-gaap	Reclassifications Of Temporary To Permanent Equity ReclassificationsOfTemporaryToPermanentEquity	-1000000	USD
CY2018Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-18000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4613000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	990000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	782000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	678000000	USD
CY2019	us-gaap	Depreciation Depreciation	151000000	USD
CY2018	us-gaap	Depreciation Depreciation	140000000	USD
CY2017	us-gaap	Depreciation Depreciation	110000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	37000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	39000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	46000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	194000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	193000000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	164000000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	46000000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	41000000	USD
CY2017	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	30000000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-11000000	USD
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	18000000	USD
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-81000000	USD
CY2019	ilmn	Payment Of Accreted Debt Discount PaymentOfAccretedDebtDiscount	84000000	USD
CY2018	ilmn	Payment Of Accreted Debt Discount PaymentOfAccretedDebtDiscount	0	USD
CY2017	ilmn	Payment Of Accreted Debt Discount PaymentOfAccretedDebtDiscount	0	USD
CY2019	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	53000000	USD
CY2018	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	21000000	USD
CY2017	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	0	USD
CY2019	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	54000000	USD
CY2018	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2017	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	453000000	USD
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-8000000	USD
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	23000000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	1000000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4000000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	58000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	105000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	26000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-25000000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	53000000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	33000000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	14000000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-5000000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8000000	USD
CY2019	ilmn	Increase Decrease Of Operating Leases Net IncreaseDecreaseOfOperatingLeasesNet	5000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	30000000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	9000000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	5000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-35000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	45000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	10000000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-44000000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	103000000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	81000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-33000000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-4000000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	160000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1051000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1142000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	875000000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1387000000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	860000000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	321000000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1010000000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2859000000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	742000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	629000000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	597000000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	322000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	209000000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	296000000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	310000000	USD
CY2019	ilmn	Payments For Proceeds From Strategic Investments PaymentsForProceedsFromStrategicInvestments	20000000	USD
CY2018	ilmn	Payments For Proceeds From Strategic Investments PaymentsForProceedsFromStrategicInvestments	15000000	USD
CY2017	ilmn	Payments For Proceeds From Strategic Investments PaymentsForProceedsFromStrategicInvestments	29000000	USD
CY2019	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	18000000	USD
CY2018	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	0	USD
CY2017	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	0	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	29000000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	52000000	USD
CY2019	us-gaap	Proceeds From Divestiture Of Interest In Joint Venture ProceedsFromDivestitureOfInterestInJointVenture	15000000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Interest In Joint Venture ProceedsFromDivestitureOfInterestInJointVenture	278000000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	100000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	745000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1813000000	USD
CY2019	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	550000000	USD
CY2018	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	4000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-214000000	USD
CY2017	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	9000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	735000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	5000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	324000000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	201000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	251000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	59000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	46000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	71000000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	82000000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	74000000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	68000000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	92000000	USD
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	79000000	USD
CY2017	us-gaap	Payments Of Merger Related Costs Financing Activities PaymentsOfMergerRelatedCostsFinancingActivities	3000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-897000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	594000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-176000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-4000000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	898000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-81000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	490000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1144000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1225000000	USD
CY2017Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	735000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2042000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1144000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1225000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	164000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	99000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	149000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	84000000	USD
CY2019Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	224000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3083000000	USD
CY2019Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3065000000	USD
CY2018Q4	ilmn	Liabilitiesand Equity Related To Leases LiabilitiesandEquityRelatedToLeases	5062000000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The preparation of the consolidated financial statements requires that management make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses, and related disclosures of contingent assets and liabilities. Actual results could differ from those estimates. </span></div>
CY2019	us-gaap	Fiscal Period FiscalPeriod	Our fiscal year is the 52 or 53 weeks ending the Sunday closest to December 31, with quarters of 13 or 14 weeks ending the Sunday closest to March 31, June 30, September 30, and December 31.
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">Customers</span></div><div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We operate in markets that are highly competitive and rapidly changing. Significant technological changes, shifting customer needs, the emergence of competitive products or services with new capabilities, and other factors could negatively impact our operating results. A portion of our customers consist of university and research institutions that management believes are, to some degree, directly or indirectly supported by the United States Government. A significant change in current research funding, particularly with respect to the U.S. National Institutes of Health, could have an adverse impact on future revenues and results of operations. </span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">International sales entail a variety of risks, including currency exchange fluctuations, longer payment cycles, and greater difficulty in accounts receivable collection. We are also subject to general geopolitical risks, such as political, social and economic instability, and changes in diplomatic and trade relations. The risks of international sales are mitigated in part by the extent to which sales are geographically distributed. Shipments to customers outside the United States comprised </span><span style="font-family:Arial;font-size:10pt;"><span>48%</span></span><span style="font-family:Arial;font-size:10pt;">, </span><span style="font-family:Arial;font-size:10pt;"><span>47%</span></span><span style="font-family:Arial;font-size:10pt;">, and </span><span style="font-family:Arial;font-size:10pt;"><span>45%</span></span><span style="font-family:Arial;font-size:10pt;"> of total revenue in 2019, 2018, and 2017, respectively. Customers outside the United States represented </span><span style="font-family:Arial;font-size:10pt;"><span>53%</span></span><span style="font-family:Arial;font-size:10pt;"> and </span><span style="font-family:Arial;font-size:10pt;"><span>44%</span></span><span style="font-family:Arial;font-size:10pt;"> of our gross trade accounts receivable balance as of </span><span style="font-family:Arial;font-size:10pt;">December 29, 2019</span><span style="font-family:Arial;font-size:10pt;"> and </span><span style="font-family:Arial;font-size:10pt;">December 30, 2018</span><span style="font-family:Arial;font-size:10pt;">, respectively. </span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We had no customers that provided more than 10% of total revenue in 2019, 2018, and 2017. We perform regular reviews of customer activity and associated credit risks and do not require collateral or enter into netting arrangements. Historically, we have not experienced significant credit losses from accounts receivable. </span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">Financial Instruments</span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We are also subject to risks related to our financial instruments, including cash and cash equivalents, investments, and accounts receivable. Most of our cash and cash equivalents as of </span><span style="font-family:Arial;font-size:10pt;">December 29, 2019</span><span style="font-family:Arial;font-size:10pt;"> were deposited with U.S. financial institutions, either domestically or with their foreign branches. Our investment policy restricts the amount of credit exposure to any one issuer to </span><span style="font-family:Arial;font-size:10pt;"><span>5%</span></span><span style="font-family:Arial;font-size:10pt;"> of the portfolio or </span><span style="font-family:Arial;font-size:10pt;"><span>5%</span></span><span style="font-family:Arial;font-size:10pt;"> of the total issue size outstanding at the time of purchase and to any one industry sector, as defined by Clearwater Analytics (Industry Sector Report), to </span><span style="font-family:Arial;font-size:10pt;"><span>30%</span></span><span style="font-family:Arial;font-size:10pt;"> of the portfolio at the time of purchase. There is no limit to the percentage of the portfolio that may be maintained in debt securities, U.S. government-sponsored entities, U.S. Treasury securities, and money market funds. Historically, we have not experienced significant credit losses from financial instruments. </span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">Suppliers</span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;padding-left:18px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We require customized products and components that currently are available from a limited number of sources. We source certain key products and components included in our products from single vendors.</span></div>
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	78000000	USD
CY2019Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	70000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1075000000	USD
CY2019Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	834000000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	579000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	70000000	USD
CY2019Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	76000000	USD
CY2018Q4	ilmn	Assets Related To Leases AssetsRelatedToLeases	1223000000	USD
CY2019Q1	ilmn	Assets Related To Leases AssetsRelatedToLeases	1559000000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	513000000	USD
CY2019Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	549000000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	722000000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1107000000	USD
CY2019Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	838000000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	359000000	USD
CY2019Q1	ilmn	Liabilitiesand Equity Related To Leases LiabilitiesandEquityRelatedToLeases	5398000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147000000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147000000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146000000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	1000000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	1000000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149000000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149000000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	148000000	shares
CY2019Q4	ilmn	Lessee Operating Lease Area LesseeOperatingLeaseArea	2500000	sqft
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	us-gaap	Advertising Expense AdvertisingExpense	28000000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	38000000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	30000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3543000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3333000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2752000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3543000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3333000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2752000000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	980000000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.66
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.14
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	209000000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	206000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	167000000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	175000000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	150000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1261000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	5000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1266000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2331000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2329000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	512000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	754000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1266000000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	106000000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	39000000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	53000000	USD
CY2018	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	21000000	USD
CY2019Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	220000000	USD
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	231000000	USD
CY2019Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets And Liabilities Net VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNet	190000000	USD
CY2018Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets And Liabilities Net VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNet	189000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	53000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	29000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	469000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	324000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	145000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	481000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	296000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	185000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	29000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	25000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	21000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	20000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	19000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	31000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	145000000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	18000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	771000000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	60000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	831000000	USD
CY2019	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	7000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	824000000	USD
CY2019Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	0	USD
CY2018Q4	ilmn	Obligations Under Financing Leases ObligationsUnderFinancingLeases	269000000	USD
CY2019Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	0	USD
CY2018Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	3000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1107000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1141000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	890000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	77000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	83000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	85000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	86000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	85000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	554000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	970000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	230000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	740000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	45000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	695000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y4M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.046
CY2019Q4	ilmn	Lessee Operating Lease Lease Not Yet Commenced Liability LesseeOperatingLeaseLeaseNotYetCommencedLiability	44000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	59000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	11000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Net Next Twelve Months OperatingLeasesFutureMinimumPaymentsDueNetNextTwelveMonths	48000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	18000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	64000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	11000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Netin Two Years OperatingLeasesFutureMinimumPaymentsDueNetinTwoYears	53000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	21000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	61000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	11000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Netin Three Years OperatingLeasesFutureMinimumPaymentsDueNetinThreeYears	50000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	21000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	61000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	12000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Netin Four Years OperatingLeasesFutureMinimumPaymentsDueNetinFourYears	49000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	22000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	61000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	11000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Netin Five Years OperatingLeasesFutureMinimumPaymentsDueNetinFiveYears	50000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	22000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	439000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	12000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Net Thereafter OperatingLeasesFutureMinimumPaymentsDueNetThereafter	427000000	USD
CY2018Q4	ilmn	Finance Lease Liability Payments Due Thereafter FinanceLeaseLiabilityPaymentsDueThereafter	179000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	745000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	68000000	USD
CY2018Q4	ilmn	Operating Leases Future Minimum Payments Due Net Total OperatingLeasesFutureMinimumPaymentsDueNetTotal	677000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	283000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	84000000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	12000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	72000000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	55000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	46000000	USD
CY2018	ilmn	Build To Suit Lease Interest Expense BuildToSuitLeaseInterestExpense	13000000	USD
CY2018Q4	ilmn	Obligations Under Financing Leases ObligationsUnderFinancingLeases	269000000	USD
CY2018Q4	us-gaap	Accrued Rent Current And Noncurrent AccruedRentCurrentAndNoncurrent	123000000	USD
CY2018Q4	us-gaap	Accrued Rent Noncurrent AccruedRentNoncurrent	119000000	USD
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1045000	shares
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	48.56
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	723000	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	49.31
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	322000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	46.93
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	130000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	35.68
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	192000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	54.52
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	134000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	53.61
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	58000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	56.65
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y2M12D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	16000000	USD
CY2019Q4	us-gaap	Share Price SharePrice	332.29
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	34000000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	33000000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	101000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	194000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	193000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	164000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	41000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	39000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	48000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	153000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	154000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	116000000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	463000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y7M6D
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	575000000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	516000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2000000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2000000	USD
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CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	235000000	USD
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CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	37000000	USD
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CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-130000000	USD
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	5000000	USD
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CY2017	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	150000000	USD
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CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	112000000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	45000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	28000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	358000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	300000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	15000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	345000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	285000000	USD
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CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	62000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	45000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5000000	USD
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CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	282000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	215000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	63000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	70000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13000000	USD
CY2019Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	889000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	88000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	79000000	USD
CY2017Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	65000000	USD
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CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	12000000	USD
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CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	14000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	22000000	USD
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CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	79000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	88000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	79000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	68000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	78000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-3000000	USD
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CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	7000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	11000000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	20000000	USD
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CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	17000000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segments
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3543000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3333000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2752000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	188000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	179000000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	156000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	985000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	883000000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	606000000	USD
CY2019Q4	us-gaap	Assets Assets	7316000000	USD
CY2018Q4	us-gaap	Assets Assets	6959000000	USD
CY2017Q4	us-gaap	Assets Assets	5257000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	209000000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	296000000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	310000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	889000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1075000000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	846000000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	838000000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	907000000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	953000000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	584000000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	573000000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	648000000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	662000000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	224000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	293000000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	234000000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	239000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	233000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	296000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	234000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	239000000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.01
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.59
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.63
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.57
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.99
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.58
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.61
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	782000000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	830000000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	853000000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	867000000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	538000000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	575000000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	597000000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	590000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	197000000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	200000000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	188000000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	198000000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	208000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	209000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	199000000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	210000000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.42
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.42
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.35
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.43
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.41
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.41
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.33
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.41

Files In Submission

Name	View Source	Status
0001110803-20-000018-index-headers.html	Edgar Link	pending
0001110803-20-000018-index.html	Edgar Link	pending
0001110803-20-000018.txt	Edgar Link	pending
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exhibit1025fourthamend.htm	Edgar Link	pending
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form10-k2019classic.htm	Edgar Link	pending
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fy1910-kex211subsidiar.htm	Edgar Link	pending
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ilmn-20191229.xsd	Edgar Link	pending
ilmn-20191229_cal.xml	Edgar Link	unprocessable
ilmn-20191229_def.xml	Edgar Link	unprocessable
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$ILMN
ILLUMINA, INC. Stock $ilmn

2019 Q4 Form 10-K Financial Statement

#000111080320000018 Filed on February 11, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ILMN ILLUMINA, INC. Stock $ilmn

2019 Q4 Form 10-K Financial Statement

#000111080320000018 Filed on February 11, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ILMN
ILLUMINA, INC. Stock $ilmn