Employee Termination Benefits and Other Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		6 Months Ended
	Jun. 28, 2013	Dec. 27, 2013	Dec. 27, 2013 Contract Termination [Member]	Dec. 27, 2013 Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Severance And Other Charges Reserve Settled With Cash			$ (9)	$ (30)
Contract Terminations And Other Exit Costs	15
Employee Termination Benefits Charge	109
Asset Impairment Charge	14
Severance And Other Charges Reserve Ending Balance	46	7
Charges to realign production	$ 138