Employee Termination Benefits and Other Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 28, 2012	Sep. 28, 2012	Dec. 28, 2012
Severance And Other Charges [Line Items]
Charges to realign production	$ 41	$ 26	$ 67