Restructuring and Other Charges (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016 USD ($)	Sep. 26, 2015 USD ($)	Oct. 01, 2016 USD ($) Employee	Sep. 26, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 372	$ 14	$ 1,786	$ 367
Other Nonrecurring Expense	23	0	23	0
2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			1,512
Restructuring and other charges	349	0	$ 1,763	0
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee			15,000
Restructuring and Related Cost, Incurred Cost	349		$ 1,763
Restructuring Reserve [Roll Forward]
Accrued restructuring, Beginning Balance			0
Accrued restructuring, Ending Balance	714		714
Restructuring Reserve, Accrual Adjustment			150
Payments for Restructuring			(940)
Restructuring Reserve, Settled without Cash			(8)
2016 Restructuring Program [Member] | Employee severance and benefit arrangements [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			1,511
Restructuring and Related Cost, Incurred Cost	338		1,752
Restructuring Reserve [Roll Forward]
Accrued restructuring, Beginning Balance			0
Accrued restructuring, Ending Balance	713		713
Restructuring Reserve, Accrual Adjustment			150
Payments for Restructuring			(940)
Restructuring Reserve, Settled without Cash			(8)
2016 Restructuring Program [Member] | Pension Settlement [Member]
Restructuring Cost and Reserve [Line Items]
Pension Settlement Charges	10		10
2016 Restructuring Program [Member] | Asset impairments and other restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			1
Restructuring and Related Cost, Incurred Cost	1		1
Restructuring Reserve [Roll Forward]
Accrued restructuring, Beginning Balance			0
Accrued restructuring, Ending Balance	1		1
Restructuring Reserve, Accrual Adjustment			0
Payments for Restructuring			0
Restructuring Reserve, Settled without Cash			0
2015 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	$ 14	0	$ 367
Restructuring Reserve [Roll Forward]
Accrued restructuring, Beginning Balance			70
Accrued restructuring, Ending Balance	$ 17		$ 17