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Revenue From Contracts With Customers - Summary of Revenue from Contracts with Customers by Major Market (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	$ 554,275	$ 437,153
Vacuum & Analysis [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	348,344	277,984
Light & Motion [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	205,931	159,169
Semiconductor [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	313,514	248,504
Semiconductor [Member] | Vacuum & Analysis [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	275,701	218,804
Semiconductor [Member] | Light & Motion [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	37,813	29,700
Advanced Markets [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	240,761	188,649
Advanced Markets [Member] | Vacuum & Analysis [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	72,643	59,180
Advanced Markets [Member] | Light & Motion [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	$ 168,118	$ 129,469

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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, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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