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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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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 - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended
	Mar. 09, 2015	Apr. 03, 2015	Jun. 27, 2014	Oct. 17, 2013	Sep. 12, 2013
Business Acquisition [Line Items]
Value allocated to goodwill		$ 2,745us-gaap_Goodwill	$ 2,559us-gaap_Goodwill
Amplidata [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	264
Business Acquisition, Cost of Acquired Entity, Cash Paid	245
Fair value of previously held cost-method investment transferred	19
Value allocated to goodwill	173
Gain recognized during period upon fair value re-measurement of interest held		9
Virident [Member]
Business Acquisition [Line Items]
Value allocated to goodwill				506
sTec [Member]
Business Acquisition [Line Items]
Value allocated to goodwill					$ 89