Acquisitions and Divestitures - Components of Gain (Loss) of Business Divestitures Included in Statements of Operations (Detail) - USD ($) $ in Millions			3 Months Ended		6 Months Ended
	May. 29, 2015	Apr. 24, 2015	Jun. 26, 2015	Mar. 27, 2015	Jun. 26, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total gain (loss) related to the business divestitures			$ 2		$ (20)
Broadcast Sports International, LLC [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total gain (loss) related to the business divestitures		$ (3)	(3)		(3)
MSI [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total gain (loss) related to the business divestitures	$ (4)		$ 4		4
Non-cash impairment charge related to MSI assets held for sale				$ (17)	(17)
MSI [Member] | Foreign Currency Forward Contracts [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on a forward contract to sell Euro proceeds from MSI divestiture			$ 1		$ (4)