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.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

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Acquisitions and Divestitures, Business Acquisitions (Details) £ in Millions, $ in Millions							3 Months Ended		9 Months Ended
	May 19, 2017 USD ($)	Jan. 05, 2017 USD ($)	Nov. 22, 2016 USD ($)	Nov. 22, 2016 GBP (£)	Sep. 30, 2016 USD ($)	Jan. 22, 2016 USD ($)	Sep. 29, 2017 USD ($)	Sep. 23, 2016 USD ($)	Sep. 29, 2017 USD ($)	Sep. 23, 2016 USD ($)	Sep. 12, 2017 USD ($)	Sep. 08, 2017 USD ($)	Mar. 17, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 22, 2016 GBP (£)
Business Acquisition [Line Items]
Fair value of liability, contingent consideration							$ 40		$ 40					$ 29
Goodwill recognized							6,652		6,652					$ 6,560
Business acquisitions in the period							100		291	$ 27
Net sales							2,646	$ 2,505	8,047	7,522
Income before income taxes							26	$ 180	515	$ 599
Doss Aviation, Inc. [Member]
Business Acquisition [Line Items]
Goodwill recognized											$ 34
Goodwill deductible for income tax purposes											$ 13
Adaptive Methods, Inc. [Member]
Business Acquisition [Line Items]
Goodwill recognized												$ 27
Open Water Power, Inc. [Member]
Business Acquisition [Line Items]
Fair value of liability, contingent consideration	$ 14
Goodwill recognized	25
Open Water Power, Inc. [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Purchase price of acquisition	17
Open Water Power, Inc. [Member] \| IPR&D [Member]
Business Acquisition [Line Items]
Indefinite-lived intangible assets	$ 65
OceanServer Technology, Inc. [Member]
Business Acquisition [Line Items]
Goodwill recognized													$ 17
Implant Sciences Corporation [Member]
Business Acquisition [Line Items]
Purchase price of acquisition		$ 118
Goodwill recognized		90
Goodwill deductible for income tax purposes		$ 87
MacDonald Humfrey (Automation) Limited [Member]
Business Acquisition [Line Items]
Purchase price of acquisition			$ 327	£ 263
Fair value of liability, contingent consideration			26												£ 21
Goodwill recognized			258												206
Identifiable intangible assets			$ 53												43
Weighted average useful life			10 years	10 years
MacDonald Humfrey (Automation) Limited [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Business acquisition contingent consideration			$ 38												30
MacDonald Humfrey (Automation) Limited [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Identifiable intangible assets			26												21
MacDonald Humfrey (Automation) Limited [Member] \| Technology [Member]
Business Acquisition [Line Items]
Identifiable intangible assets			$ 27												£ 22
Advanced Technical Materials, Inc. [Member]
Business Acquisition [Line Items]
Purchase price of acquisition						$ 27
Goodwill recognized						$ 20
Micreo Limited and Aerosim Technologies Inc [Member]
Business Acquisition [Line Items]
Purchase price of acquisition					$ 86
Goodwill recognized					59
Goodwill deductible for income tax purposes					$ 6
Open Water Power, OceanServer Technology, Inc. and ETD [Member]
Business Acquisition [Line Items]
Net sales							17		53
Income before income taxes							$ 1		$ 4