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.

No definition available.

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- Definition

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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

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Goodwill and Other Intangibles, net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Oct. 01, 2016	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill		$ 2,458	$ 2,495	$ 2,465
Fair value exceeding carrying value (at least), percent			40.00%
Divestiture Group \| Wireless LAN (WLAN)
Goodwill [Line Items]
Goodwill impairment	$ 32	$ 32
EVM
Goodwill [Line Items]
Goodwill			$ 2,300
AIT
Goodwill [Line Items]
Goodwill			$ 154