Severance and Facility Closure Costs (Detail) $ in Millions	6 Months Ended
	Jun. 25, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 259
Charges Incurred	36
Cash Payments	(147)
Currency, Lease Accretion, and Other Adjustments	5
Ending Balance	153
Termination benefits | Merger related accruals
Restructuring Cost and Reserve [Line Items]
Beginning Balance	16
Cash Payments	(4)
Currency, Lease Accretion, and Other Adjustments	(2)
Ending Balance	10
Termination benefits | European restructuring plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance	42
Cash Payments	(16)
Currency, Lease Accretion, and Other Adjustments	2
Ending Balance	28
Termination benefits | Other restructuring accruals
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1
Charges Incurred	4
Cash Payments	(4)
Ending Balance	1
Lease and contract obligations, accruals for facilities closures and other costs | Merger related accruals
Restructuring Cost and Reserve [Line Items]
Beginning Balance	77
Charges Incurred	14
Cash Payments	(37)
Currency, Lease Accretion, and Other Adjustments	3
Ending Balance	57
Lease and contract obligations, accruals for facilities closures and other costs | European restructuring plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1
Ending Balance	1
Lease and contract obligations, accruals for facilities closures and other costs | Other restructuring accruals
Restructuring Cost and Reserve [Line Items]
Beginning Balance	25
Charges Incurred	1
Cash Payments	(8)
Currency, Lease Accretion, and Other Adjustments	1
Ending Balance	19
Lease and contract obligations, accruals for facilities closures and other costs | Acquired entity accruals
Restructuring Cost and Reserve [Line Items]
Beginning Balance	25
Charges Incurred	(2)
Cash Payments	(3)
Currency, Lease Accretion, and Other Adjustments	2
Ending Balance	22
Lease and contract obligations, accruals for facilities closures and other costs | Acquired Entities
Restructuring Cost and Reserve [Line Items]
Beginning Balance	72
Charges Incurred	19
Cash Payments	(75)
Currency, Lease Accretion, and Other Adjustments	(1)
Ending Balance	$ 15