Acquisition - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended		12 Months Ended
	Mar. 08, 2013	Jun. 28, 2013	Jun. 29, 2012	Mar. 08, 2012	Aug. 01, 2013 Subsequent Event [Member]	Jun. 28, 2013 Hitachi Global Storage Technologies [Member]	Mar. 08, 2012 Hitachi Global Storage Technologies [Member]	Jun. 28, 2013 Hitachi Global Storage Technologies [Member] Post-closing assumed pension adjustment [Member]
Business Acquisition [Line Items]
Purchase price of the Acquisition				$ 4,687,000,000			$ 4,700,000,000
Portion of debt in purchase price							3,700,000,000
Company newly issued common stock							25
Fair value of shares issued for Acquisition							877,000,000
Percentage of discount used for calculation of fair value							10.00%
Number of year of transfer restriction							1 year
Cash Acquisition net purchase price		27,000,000
Post-closing Adjustment related to changes in working capital		37,000,000
Acquisition post-closing assumed pension adjustment		10,000,000
Value allocated to goodwill		1,954,000,000	1,975,000,000			1,800,000,000	1,803,000,000
Period of measurement	12 months
Net decrease in goodwill						21,000,000
Net increase (decrease) in goodwill						37,000,000		10,000,000
Increase in intangible assets						1,000,000
Increase in deferred income taxes						5,000,000
Insurance recovery related to facilities acquired in connection with the acquisition of TSDT			$ 21,000,000		$ 45,000,000