Number of divestments.

No definition available.

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- Definition

Sale of equity interest percentage.

+ References

No definition available.

+ Details

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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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.

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The amount of inventory recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464

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Data Type:	xbrli:monetaryItemType
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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

+ References

No definition available.

+ Details

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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- Definition

This element represents the cash inflow during the period from the sale of a component of the entity.

+ 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

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

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Acquisitions and Divestments - Additional Information (Detail) $ in Millions					1 Months Ended	12 Months Ended
	Jul. 10, 2018 USD ($)	Apr. 19, 2017 USD ($)	Feb. 06, 2017 USD ($)	Aug. 08, 2016 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) Business	Dec. 31, 2017 USD ($) Business	Dec. 31, 2016 USD ($) Business
Business Acquisition [Line Items]
Number of material acquisitions \| Business						0	0
Cash proceeds, net of cash divested						$ 159	$ 2,682	$ 20
Equity method investment ownership percentage						0.00%	0.00%
Number of material divestments \| Business								0
Purchase price allocation to goodwill						$ 11
Other intangible assets, amortization period						4 years
Other Acquisition [Member]
Business Acquisition [Line Items]
Payments to acquire business				$ 200
Purchase price allocation to goodwill				14
Purchase price allocation to other intangible assets				177
Purchase price allocation to inventories				8
Purchase price allocation to tangible fixed assets				1
Other Acquisition [Member] \| Core Technology [Member]
Business Acquisition [Line Items]
Purchase price allocation to other intangible assets				$ 172
Other intangible assets, amortization period				7 years
Other Acquisition [Member] \| Existing Technology [Member]
Business Acquisition [Line Items]
Purchase price allocation to other intangible assets				$ 5
Other intangible assets, amortization period				2 years
Other Income (Expense) [Member]
Business Acquisition [Line Items]
Gain (loss) on sale of business							$ 1,597
SP [Member] \| Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Business Acquisition [Line Items]
Cash proceeds, net of cash divested			$ 2,600
Suzhou ASEN Semiconductors Company Limited [Member]
Business Acquisition [Line Items]
Sale of equity interest, percentage	40.00%
Total consideration	$ 127
Net gain realized on sale of equity method investment	$ 51
WeEn [Member]
Business Acquisition [Line Items]
Sale of equity interest, percentage					24.00%
Cash proceeds, net of cash divested					$ 32
Equity method investment ownership percentage						0.00%	49.00%
ASMC [Member]
Business Acquisition [Line Items]
Total consideration		$ 54
Net gain realized on sale of equity method investment		$ 31
Equity method investment ownership percentage		27.47%