Other Current Liabilities and Other Liabilities - Changes in Company's Accrued Product Warranty Costs (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 25, 2016
Accrued product warranty costs [Roll Forward]:
Balance at January 1	[1]	$ 109	$ 105
Acquisitions during the period	[1]	3	0
Accruals for product warranties issued during the period	[1]	16	9
Settlements made during the period	[1]	(12)	(11)
Balance at end of period	[1]	$ 116	$ 103

[1] Warranty obligations incurred in connection with long-term production contracts that are accounted for under the POC cost-to-cost method are included within the contract estimates at completion and are excluded from the above amounts. The balances above include both the current and non-current amounts.