Cost-Method Investment Ownership Percentage

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- Definition

Cost-method Investment Voting Interest

+ References

No definition available.

+ Details

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- Definition

Noncontrolling Interest, Loss Percentage Attributable to Parent

+ References

No definition available.

+ Details

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- Definition

Payments For (Proceeds From) Strategic Investments

+ References

No definition available.

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- Definition

Remaining Shares Owned By Parent Of Less Than Wholly Owned Subsidiary

+ References

No definition available.

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- Definition

Shares Repurchased By Less Than Wholly Owned Subsidiary From Parent

+ References

No definition available.

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- Definition

Strategic Investment Shares Purchased

+ References

No definition available.

+ Details

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=75025870&loc=d3e40691-111596

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=75027002&loc=d3e40346-111594

+ Details

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- Definition

The amount of the gain (loss) recognized by the parent and included in its attributable portion of net income for the period due to deconsolidation of a subsidiary or derecognition of a group of assets. The gain (loss) recognized and included in the net income attributable to the parent for the period is generally computed as the difference between: (a) the aggregate of: (1) the fair value of any consideration received; (2) the fair value of any retained noncontrolling investment in the former subsidiary at the date the subsidiary was deconsolidated; and (3) the carrying amount of any noncontrolling interest in the former subsidiary (including any accumulated other comprehensive income attributable to the noncontrolling interest) at the date the subsidiary was deconsolidated and (b) the carrying amount of the former subsidiary's assets and liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4582445-111684

+ Details

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- Definition

In connection with deconsolidation of a subsidiary or derecognition of a group of assets, the portion of any gain (loss) recognized by the parent, during the period, which is related to the remeasurement of any retained investment in the former subsidiary or group of assets to its fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4582445-111684

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

+ Details

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Sheet Account Details - Narrative - Deconsolidation of GRAIL, Inc. (Details) - USD ($) shares in Millions, $ in Millions		1 Months Ended	2 Months Ended	3 Months Ended	12 Months Ended
	Feb. 28, 2017	Jan. 31, 2016	Feb. 28, 2017	Jul. 02, 2017	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	Feb. 27, 2017
Variable Interest Entity [Line Items]
Proceeds from sale of GRAIL preferred stock					$ 278
Payments for additional GRAIL shares purchased by Illumina					29	$ 14	$ 6
Gain on deconsolidation of GRAIL	$ 453				$ 453
Portion of gain on deconsolidation related to remeasurement of Company's retained equity interest	$ 159
GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Cost-method investment ownership percentage	19.00%		19.00%	17.00%
Cost-method investment voting interest percentage	13.00%		13.00%	12.00%
GRAIL Class B [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Strategic Investment Shares Purchased				3
Payments for additional GRAIL shares purchased by Illumina				$ 14
Remaining shares of GRAIL owned by Illumina					3
GRAIL Class A Preferred [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Remaining shares of GRAIL owned by Illumina					5
GRAIL Class A Common [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Remaining shares of GRAIL owned by Illumina					78
Variable Interest Entity, Primary Beneficiary [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
GRAIL Series B preferred financing		$ 120
Proceeds from sale of GRAIL preferred stock	$ 278
Equity ownership interest percentage								52.00%
Percentage of entity's losses absorbed			50.00%
Variable Interest Entity, Primary Beneficiary [Member] \| GRAIL Class B [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
GRAIL Series B preferred financing	$ 900
Variable Interest Entity, Primary Beneficiary [Member] \| GRAIL Class A Preferred [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Shares repurchased by GRAIL from Illumina	35
Variable Interest Entity, Primary Beneficiary [Member] \| GRAIL Class A-1 Convertible [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Shares repurchased by GRAIL from Illumina	34
Other Assets [Member]
Variable Interest Entity [Line Items]
Cost-method investments					$ 250	$ 57
Other Assets [Member] \| GRAIL, Inc. [Member]
Variable Interest Entity [Line Items]
Cost-method investments					$ 185