Accumulated Other Comprehensive (Loss) Income (AOCI) - Summary of Amounts Reclassified from AOCI into Net Income (Detail) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
	May. 29, 2015	Sep. 25, 2015	Jun. 26, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance					$ (584)	$ (110)
Other comprehensive loss before reclassifications, net of tax					(138)	(62)
Amounts reclassified from AOCI, net of tax					92	12
Total other comprehensive (loss) income		$ (52)		$ (64)	(46)	(50)
Ending Balance		(630)		(160)	(630)	(160)
Loss related to business divestitures		(9)			(29)
Cost of sales-products		(1,417)		(1,480)	(4,335)	(4,498)
(Loss) income before income taxes		(258)		215	24	667
Provision for income taxes		(38)		(58)	(87)	(197)
Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income		$ (14)		(2)	(92)	(12)
MSI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss related to business divestitures	$ (4)		$ 4		4
Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance					19	142
Other comprehensive loss before reclassifications, net of tax					(125)	$ (57)
Amounts reclassified from AOCI, net of tax					41
Total other comprehensive (loss) income					(84)	$ (57)
Ending Balance		$ (65)		85	(65)	85
Foreign Currency Translation Adjustment [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Loss) income before income taxes					(41)
Net income					(41)
Foreign Currency Translation Adjustment [Member] | MSI [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss related to business divestitures					(41)
Unrealized (Losses) Gains on Hedging Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance					(5)	1
Other comprehensive loss before reclassifications, net of tax					(13)	(5)
Amounts reclassified from AOCI, net of tax					10	$ 5
Total other comprehensive (loss) income					(3)
Ending Balance		(8)		1	(8)	$ 1
Unrealized (Losses) Gains on Hedging Instruments [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Loss) income before income taxes		(4)		1	(12)	(6)
Provision for income taxes				(1)	2	1
Net income		(4)			(10)	(5)
Unrealized (Losses) Gains on Hedging Instruments [Member] | MSI [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss related to business divestitures					(2)
Unrealized (Losses) Gains on Hedging Instruments [Member] | Other [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales-products		(4)		1	(10)	(6)
Amortization of Defined Benefit Pension Items [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain		(17)		(3)	(50)	(11)
(Loss) income before income taxes		(17)		(3)	(64)	(11)
Provision for income taxes		7		1	23	4
Net income		(10)		(2)	(41)	(7)
Amortization of Defined Benefit Pension Items [Member] | MSI [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss related to business divestitures					(14)
Unrecognized Losses and Prior Service Cost, Net [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance					$ (598)	$ (253)
Other comprehensive loss before reclassifications, net of tax
Amounts reclassified from AOCI, net of tax					$ 41	$ 7
Total other comprehensive (loss) income					41	7
Ending Balance		$ (557)		$ (246)	$ (557)	$ (246)