Western Digital (WDC) 10-Q 31 Jan 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Dec. 27, 2013	Jan. 22, 2014
Document Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	27-Dec-13	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'WDC	'
Entity Registrant Name	'WESTERN DIGITAL CORP	'
Entity Central Index Key	'0000106040	'
Current Fiscal Year End Date	'--06-27	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	236,261,586

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$4,655	$4,309
Accounts receivable, net	1,959	1,793
Inventories	1,293	1,188
Other current assets	381	308
Total current assets	8,288	7,598
Property, plant and equipment, net	3,509	3,700
Goodwill	2,555	1,954
Other intangible assets, net	607	605
Other non-current assets	323	179
Total assets	15,282	14,036
Current liabilities:	'	'
Accounts payable	2,106	1,990
Arbitration Award Reserve	732	706
Accrued expenses	479	480
Employee-related Liabilities, Current	456	453
Accrued warranty	117	114
Short-term Debt	500	0
Current portion of long-term debt	230	230
Total current liabilities	4,620	3,973
Long-term debt	1,610	1,725
Other liabilities	473	445
Total liabilities	6,703	6,143
Commitments and contingencies (Notes 4 and 5)	'	'
Shareholders' equity:	'	'
Preferred stock, $.01 par value; authorized - 5 shares; issued and outstanding - none	0	0
Common stock, $.01 par value; authorized - 450 shares; issued - 261 shares; outstanding - 236 and 237 shares, respectively	3	3
Additional paid-in capital	2,262	2,188
Accumulated other comprehensive income (loss)	-49	-35
Retained earnings	7,541	6,749
Treasury stock - common shares at cost; 25 shares and 24 shares, respectively	-1,178	-1,012
Total shareholders' equity	8,579	7,893
Total liabilities and shareholders' equity	$15,282	$14,036

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 27, 2013	Jun. 28, 2013
Statement of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.01	$0.01
Preferred stock, authorized	5,000,000	5,000,000
Preferred stock, issued	'	'
Preferred stock, outstanding	'	'
Common stock, par value	$0.01	$0.01
Common stock, authorized	450,000,000	450,000,000
Common stock, issued	261,000,000	261,000,000
Common stock, outstanding	237,000,000	237,000,000
Treasury stock, shares	24,000,000	24,000,000

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Income Statement [Abstract]	'	'	'	'
Revenue, net	$3,972	$3,824	$7,776	$7,859
Cost of revenue	2,831	2,765	5,547	5,607
Gross margin	1,141	1,059	2,229	2,252
Operating expenses:	'	'	'	'
Research and development	421	378	822	774
Selling, general and administrative	229	162	361	341
Arbitration Award Provision	13	0	26	0
Employee termination benefits and other charges	0	41	0	67
Total operating expenses	663	581	1,209	1,182
Operating income	478	478	1,020	1,070
Other income (expense):	'	'	'	'
Interest income	3	3	6	5
Interest and other expense	-14	-13	-27	-29
Total other expense, net	-11	-10	-21	-24
Income before income taxes	467	468	999	1,046
Income tax provision	37	133	74	192
Net income	$430	$335	$925	$854
Income per common share:	'	'	'	'
Basic	$1.82	$1.38	$3.92	$3.50
Diluted	$1.77	$1.36	$3.81	$3.43
Weighted average shares outstanding:	'	'	'	'
Basic	236	242	236	244
Diluted	243	246	243	249

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$430	$335	$925	$854
Other comprehensive income (loss), net of tax:	'	'	'	'
Net unrealized gains on cash flow hedges	-30	-2	-14	26
Change in net actuarial gains	0	0	0	1
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0	-4	0	-4
Other comprehensive income	-30	-6	-14	23
Total comprehensive income	$400	$329	$911	$877

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012
Cash flows from operating activities	'	'
Net income	$925	$854
Adjustments to reconcile net income to net cash provided by operations:	'	'
Depreciation and amortization	629	622
Stock-based compensation	84	71
Deferred income taxes	-39	68
Gain On Insurance Recovery	-65	0
Gain (Loss) on Disposition of Property Plant Equipment	29	0
Non Cash Portion Of Employee Termination Benefits And Other Charges	0	15
Changes in:	'	'
Accounts receivable, net	-145	633
Inventories	-66	7
Accounts payable	93	-352
Increase Decrease In Arbitration Award Reserve	26	0
Accrued expenses	-36	-185
Increase (Decrease) in Employee Related Liabilities	3	16
Other assets and liabilities	-32	-41
Net cash provided by operating activities	1,406	1,708
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	-306	-628
Acquisitions, net	-823	-27
Payments for (Proceeds from) Other Investing Activities	4	-15
Net cash used in investing activities	-1,125	-670
Cash flows from financing activities	'	'
Issuance of stock under employee stock plans	97	86
Taxes paid on vested stock awards under employee stock plans	-24	-8
Excess tax benefits from employee stock plans	25	35
Repurchases of common stock	-300	-364
Dividends to shareholders	-118	-121
Proceeds from (Repayments of) Short-term Debt	500	0
Repayment of debt	-115	-58
Net cash provided by (used in) financing activities	65	-430
Net increase (decrease) in cash and cash equivalents	346	608
Cash and cash equivalents, beginning of period	4,309	3,208
Cash and cash equivalents, end of period	4,655	3,816
Supplemental disclosure of cash flow information:	'	'
Cash paid for income taxes	122	95
Cash paid for interest	24	21
Supplemental disclosure of non-cash financing activities:	'	'
Accrual of cash dividend declared	$71	$0

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Dec. 27, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	1. Basis of Presentation
	The accounting policies followed by Western Digital Corporation (the “Company”) are set forth in Part II, Item 8, Note 1 of the Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended June 28, 2013. In the opinion of management, all adjustments necessary to fairly state the unaudited condensed consolidated financial statements have been made. All such adjustments are of a normal, recurring nature. Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended June 28, 2013. The results of operations for interim periods are not necessarily indicative of results to be expected for the full year.
	The Company acquired Virident Systems, Inc. ("Virident") on October 17, 2013, sTec, Inc. (“sTec”) on September 12, 2013, and VeloBit, Inc. ("VeloBit") on July 10, 2013. These acquisitions are further described in Note 11 below. In connection with the acquisitions, Virident, sTec and VeloBit became indirect wholly-owned subsidiaries of the Company. Virident, sTec and VeloBit’s results of operations since the dates of acquisition are included in the condensed consolidated financial statements.
	Company management has made estimates and assumptions relating to the reporting of certain assets and liabilities in conformity with U.S. GAAP. These estimates and assumptions have been applied using methodologies that are consistent throughout the periods presented. However, actual results could differ materially from these estimates.

Supplemental_Financial_Stateme

Supplemental Financial Statement Data	6 Months Ended
	Dec. 27, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Supplemental Financial Statement Data	'
	2. Supplemental Financial Statement Data
	Inventories; Property, Plant and Equipment; and Other Intangible Assets
		December 27,			June 28,
		2013			2013
		(in millions)
	Inventories:
	Raw materials and component parts	$	201		$	167
	Work-in-process	581			575
	Finished goods	511			446
	Total inventories	$	1,293		$	1,188
	Property, plant and equipment:
	Property, plant and equipment	$	7,879		$	7,616
	Accumulated depreciation	(4,370		)	(3,916		)
	Property, plant and equipment, net	$	3,509		$	3,700
	Other intangible assets:
	Other intangible assets	$	1,060		$	948
	Accumulated amortization	(453		)	(343		)
	Other intangible assets, net	$	607		$	605
	Warranty
	The Company records an accrual for estimated warranty costs when revenue is recognized. The Company generally warrants its products for a period of one to five years. The warranty provision considers estimated product failure rates and trends, estimated replacement costs, estimated repair costs which include scrap costs, and estimated costs for customer compensatory claims related to product quality issues, if any. A statistical warranty tracking model is used to help prepare estimates and assist the Company in exercising judgment in determining the underlying estimates. The statistical tracking model captures specific detail on hard drive reliability, such as factory test data, historical field return rates, and costs to repair by product type. Management’s judgment is subject to a greater degree of subjectivity with respect to newly introduced products because of limited field experience with those products upon which to base warranty estimates. Management reviews the warranty accrual quarterly for products shipped in prior periods and which are still under warranty. Any changes in the estimates underlying the accrual may result in adjustments that impact current period gross profit and income. Such changes are generally a result of differences between forecasted and actual return rate experience and costs to repair. If actual product return trends, costs to repair returned products or costs of customer compensatory claims differ significantly from estimates, future results of operations could be materially affected. Changes in the warranty accrual were as follows (in millions):
		Three Months						Six Months
		Ended						Ended
		December 27,			28-Dec-12			December 27,			28-Dec-12
		2013						2013
	Warranty accrual, beginning of period	$	195		$	230		$	187		$	260
	Warranty liability assumed as a result of acquisition (see Note 11)	1			—			4			—
	Charges to operations	44			44			84			90
	Utilization	(57		)	(51		)	(106		)	(111		)
	Changes in estimate related to pre-existing warranties	7			(12		)	21			(28		)
	Warranty accrual, end of period	$	190		$	211		$	190		$	211
	The long-term portion of the warranty accrual classified in other liabilities was $73 million at both December 27, 2013 and June 28, 2013.
	Other Comprehensive Income (Loss)
	Other comprehensive income (loss) refers to revenue, expenses, gains and losses that are recorded as an element of shareholders’ equity but are excluded from net income. The Company’s other comprehensive income (loss) is comprised of unrealized gains and losses on foreign exchange contracts and actuarial gains and losses related to pensions. The income tax impact on components of other comprehensive income is immaterial for all periods presented.
	The following table illustrates the changes in the balances of each component of accumulated other comprehensive income for the six months ended December 27, 2013 (in millions):
		Actuarial Pension Gain (Loss)			Foreign Currency Translation Gain (Loss)			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
	Balance at June 28, 2013	$	11		$	—		$	(46	)	$	(35	)
	Other comprehensive income before reclassifications	—			—			(11		)	(11		)
	Amounts reclassified from accumulated other comprehensive income	—			—			(3		)	(3		)
	Net current-period other comprehensive income	—			—			(14		)	(14		)
	Balance at December 27, 2013	$	11		$	—		$	(60	)	$	(49	)
	The following table illustrates the changes in the balances of each component of accumulated other comprehensive income for the six months ended December 28, 2012 (in millions):
		Actuarial Pension Gain (Loss)			Foreign Currency Translation Gain (Loss)			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
	Balance at June 29, 2012	$	(3	)	$	4		$	(16	)	$	(15	)
	Other comprehensive income before reclassifications	1			—			45			46
	Amounts reclassified from accumulated other comprehensive income	—			(4		)	(19		)	(23		)
	Net current-period other comprehensive income	1			(4		)	26			23
	Balance at December 28, 2012	$	(2	)	$	—		$	10		$	8

Income_per_Common_Share

Income per Common Share	6 Months Ended
	Dec. 27, 2013
Earnings Per Share [Abstract]	'
Income per Common Share	'
	3. Income per Common Share
	The Company computes basic income per common share using net income and the weighted average number of common shares outstanding during the period. Diluted income per common share is computed using net income and the weighted average number of common shares and potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include certain dilutive outstanding employee stock options, rights to purchase shares of common stock under the Company’s Employee Stock Purchase Plan (“ESPP”) and restricted stock unit awards (“RSUs”).
	The following table illustrates the computation of basic and diluted income per common share (in millions, except per share data):
		Three Months				Six Months
		Ended				Ended
		27-Dec-13		28-Dec-12		27-Dec-13		28-Dec-12
	Net income	$	430	$	335	$	925	$	854
	Weighted average shares outstanding:
	Basic	236		242		236		244
	Employee stock options and other	7		4		7		5
	Diluted	243		246		243		249
	Income per common share:
	Basic	$	1.82	$	1.38	$	3.92	$	3.5
	Diluted	$	1.77	$	1.36	$	3.81	$	3.43
	Anti-dilutive potential common shares excluded*	2		7		1		6
	*	For purposes of computing diluted income per common share, certain potentially dilutive securities have been excluded from the calculation because their effect would have been anti-dilutive.

Debt

Debt	6 Months Ended
	Dec. 27, 2013
Debt Disclosure [Abstract]	'
Debt	'
	4. Debt
	On March 8, 2012 (the “HGST Closing Date”), the Company, in its capacity as the parent entity and guarantor, Western Digital Technologies, Inc. (“WDT”), a wholly owned subsidiary of the Company, and Western Digital Ireland, Ltd. (“WDI”), an indirect wholly owned subsidiary of the Company, entered into a five-year credit agreement (the “Credit Facility”) with Bank of America, N.A., as administrative agent, swing line lender and letter of credit issuer, and certain other participating lenders. The Credit Facility provided for $2.8 billion of unsecured loan facilities consisting of a $2.3 billion term loan facility and a $500 million revolving credit facility. The only borrower under the term loan facility was WDI and the revolving credit facility was available to both WDI and WDT. As of December 27, 2013, the outstanding balance was $1.8 billion for the term loan facility and $500 million for the revolving credit facility, totaling $2.3 billion. As of December 27, 2013, the term loan facility and revolving credit facility had a variable interest rate of 2.16% and the Company was in compliance with all covenants. On January 9, 2014, the outstanding balance on the existing Credit Facility was repaid, the Credit Facility was terminated, and a new credit agreement was entered into. For more information on the credit agreement subsequent event, see Note 14.

Legal_Proceedings

Legal Proceedings	6 Months Ended
	Dec. 27, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Legal Proceedings	'
	5. Legal Proceedings
	When the Company becomes aware of a claim or potential claim, the Company assesses the likelihood of any loss or exposure. The Company discloses information regarding each material claim where the likelihood of a loss contingency is probable or reasonably possible. If a loss contingency is probable and the amount of the loss can be reasonably estimated, the Company records an accrual for the loss. In such cases, there may be an exposure to potential loss in excess of the amount accrued. Where a loss is not probable but is reasonably possible or where a loss in excess of the amount accrued is reasonably possible, the Company discloses an estimate of the amount of the loss or range of possible losses for the claim if a reasonable estimate can be made, unless the amount of such reasonably possible losses is not material to the Company’s financial position, results of operations or cash flows. Unless otherwise stated below, for each of the matters described below, the Company has either recorded an accrual for losses that are probable and reasonably estimable or has determined that, while a loss is reasonably possible (including potential losses in excess of the amounts accrued by the Company), a reasonable estimate of the amount of loss or range of possible losses with respect to the claim or in excess of amounts already accrued by the Company cannot be made. The ability to predict the ultimate outcome of such matters involves judgments, estimates and inherent uncertainties. The actual outcome of such matters could differ materially from management’s estimates.
	Solely for purposes of this footnote, “WD” refers to Western Digital Corporation or one or more of its subsidiaries excluding HGST prior to the HGST Closing Date. HGST refers to Hitachi Global Storage Technologies Holdings Pte. Ltd. or one or more of its subsidiaries as of the HGST Closing Date, and “the Company” refers to Western Digital Corporation and all of its subsidiaries on a consolidated basis including HGST.
	Intellectual Property Litigation
	On June 20, 2008, plaintiff Convolve, Inc. (“Convolve”) filed a complaint in the Eastern District of Texas against WD, HGST, and one other company alleging infringement of U.S. Patent Nos. 6,314,473 and 4,916,635. The complaint sought unspecified monetary damages and injunctive relief. On October 10, 2008, Convolve amended its complaint to allege infringement of only the ‘473 patent. The ‘473 patent allegedly relates to interface technology to select between certain modes of a disk drive’s operations relating to speed and noise. A trial in the matter began on July 18, 2011 and concluded on July 26, 2011 with a verdict against WD and HGST in an amount that is not material to the Company’s financial position, results of operations or cash flows. WD and HGST have filed post-trial motions challenging the verdict and will evaluate their options for appeal after the Court rules on the post-trial motions.
	On December 7, 2009, plaintiff Nazomi Communications (“Nazomi”) filed a complaint in the Eastern District of Texas against WD and seven other companies alleging infringement of U.S. Patent Nos. 7,080,362 and 7,225,436. Nazomi dismissed the Eastern District of Texas suit after filing a similar complaint in the Central District of California on February 8, 2010. The case was subsequently transferred to the Northern District of California on October 14, 2010. The complaint seeks injunctive relief and unspecified monetary damages, fees and costs. The asserted patents allegedly relate to processor cores capable of Java hardware acceleration. In August 2012, the Court dismissed WD on summary judgment for non-infringement. Nazomi filed a notice of appeal on January 16, 2013. The Federal Circuit heard oral argument on the appeal on November 4, 2013 and affirmed the Court's grant of summary judgment of non-infringement on January 10, 2014. WD intends to continue to defend itself vigorously in this matter.
	On August 1, 2011, plaintiff Guzik Technical Enterprises (“Guzik”) filed a complaint in the Northern District of California against WD and various of its subsidiaries alleging infringement of U.S. Patent Nos. 6,023,145 and 6,785,085, breach of contract and misappropriation of trade secrets. The complaint seeks injunctive relief and unspecified monetary damages, fees and costs. The patents asserted by Guzik allegedly relate to devices used to test hard disk drive heads and media. On November 30, 2013, WD entered into a settlement agreement for an amount that is not material to the Company’s financial position, results of operations or cash flows, for which the Company recorded an accrual in the three months ended December 27, 2013. Guzik is disputing the enforceability of the agreement and on December 27, 2013, WD filed a motion to enforce the agreement. WD intends to defend itself vigorously in this matter.
	On July 9, 2012, Siemens Aktiengesellschaft (“Siemens”) filed a complaint in German court against WD, Western Digital GmbH, and Digital River International, S.a.r.l. alleging patent infringement of European patent no. EP 674769, which claims an artificial antiferromagnetic (AAF) (aka, synthetic antiferromagnetic) structure for giant magneto-resistive (GMR) sensors. On March 14-15, 2013, Western Digital GmbH filed a response of non-infringement and also filed a separate nullity action. Siemens separately served WD on July 15, 2013. WD responded on September 6, 2013. Siemens' response is due on March 28, 2014. Western Digital GmbH's and WD’s rejoinder will then be due on September 26, 2014. The oral hearing is scheduled for October 28, 2014. WD and Western Digital GmbH intend to defend themselves vigorously in this matter.
	On April 29, 2013, plaintiffs Charles C. Freeney III et al. filed a complaint in the Eastern District of Texas against WD alleging infringement of U.S. Patent No. 7,110,744. The complaint seeks injunctive relief and unspecified monetary damages, fees and costs. The patent allegedly relates to WD’s AC router products. On November 14, 2013, WD and Mr. Freeney III et al. reached a settlement in this matter for an amount that was not material to the Company’s financial position, results of operations or cash flows. On December 11, 2013, the United States District Court for the Eastern District of Texas ordered that all claims against WD are dismissed with prejudice.
	On September 5, 2013, plaintiff Lake Cherokee Hard Drive Technologies, LLC (“Lake Cherokee”) filed a complaint in the Eastern District of Texas against: Marvell Asia PTE, Ltd., Samsung Semiconductor, Inc., Seagate Tech. LLC, Seagate Tech. Int’l., Toshiba Corp., Toshiba Am. Elec. Components, Toshiba Am. Inf. Sys., Inc., Toshiba Am. Inf. Equip. (Philippines), Inc., and WDT alleging infringement of US Patent Nos. 5,844,738 and 5,978,162. Lake Cherokee alleges that WDT’s hard disk drive products that contain Marvell read channel systems-on-a-chip (SOCs) infringe its ’738 and ’162 patents. The complaint seeks unspecified monetary damages, fees and costs. WDT intends to defend itself vigorously in this matter.
	On September 25, 2013, plaintiff Lake Cherokee filed a complaint in the Eastern District of Texas against: Marvell Semiconductor, Inc., Marvell Asia PTE, Ltd., Dell Inc., and WDT alleging infringement of US Patent No. 5,583,706. Lake Cherokee alleges that WDT’s hard disk drive products that contain Marvell read channel systems-on-a-chip (SOCs) infringe its ’706 patent. The complaint seeks an injunction, unspecified monetary damages, fees and costs. WDT intends to defend itself vigorously in this matter.
	On September 9, 2013, plaintiff Garnet Digital, LLC ("Garnet Digital") filed a complaint in the Eastern District of Texas against WDT, alleging infringement of US Patent No. 5,379,421. Garnet Digital alleges that the WD TV Live product infringes the ’421 patent. The complaint seeks unspecified monetary damages, fees and costs. On January 21, 2014, WDT and Garnet Digital reached a settlement in this matter for an amount that was not material to the Company's financial position, results of operations or cash flows.
	Seagate Matter
	On October 4, 2006, plaintiff Seagate Technology LLC (“Seagate”) filed an action in the District Court of Hennepin County, Minnesota, naming as defendants WD and one of its now former employees previously employed by Seagate. The complaint in the action alleged claims based on supposed misappropriation of trade secrets and sought injunctive relief and unspecified monetary damages, fees and costs. On June 19, 2007, WD’s former employee filed a demand for arbitration with the American Arbitration Association. A motion to stay the litigation as against all defendants and to compel arbitration of all Seagate’s claims was granted on September 19, 2007. On September 23, 2010, Seagate filed a motion to amend its claims and add allegations based on the supposed misappropriation of additional confidential information, and the arbitrator granted Seagate’s motion. The arbitration hearing commenced on May 23, 2011 and concluded on July 11, 2011.
	On November 18, 2011, the sole arbitrator ruled in favor of WD in connection with five of the eight alleged trade secrets at issue, based on evidence that such trade secrets were known publicly at the time the former employee joined WD. Based on a determination that the employee had fabricated evidence, the arbitrator then concluded that WD had to know of the fabrications. As a sanction, the arbitrator precluded any evidence or defense by WD disputing the validity, misappropriation, or use of the three remaining alleged trade secrets by WD, and entered judgment in favor of Seagate with respect to such trade secrets. Using an unjust enrichment theory of damages, the arbitrator issued an interim award against WD in the amount of $525 million plus pre-award interest at the Minnesota statutory rate of 10% per year. In his decision with respect to these three trade secrets, the arbitrator did not question the relevance, veracity or credibility of any of WD’s ten expert and fact witnesses (other than WD’s former employee), nor the authenticity of any other evidence WD presented. On January 23, 2012, the arbitrator issued a final award adding pre-award interest in the amount of $105.4 million for a total final award of $630.4 million. On January 23, 2012, WD filed a petition in the District Court of Hennepin County, Minnesota to have the final arbitration award vacated. A hearing on the petition to vacate was held on March 1, 2012.
	On October 12, 2012, the District Court of Hennepin County, Minnesota vacated, in full, the $630.4 million final arbitration award. Specifically, the Court confirmed the arbitration award with respect to each of the five trade secret claims that WD and the former employee had won at the arbitration and vacated the arbitration award with respect to the three trade secret claims that WD and the former employee had lost at the arbitration. The Court ordered that a rehearing be held concerning those three alleged trade secret claims before a new arbitrator.
	On October 30, 2012, Seagate initiated an appeal of the Court’s decision with the Minnesota Court of Appeals. On July 22, 2013, the Minnesota Court of Appeals reversed the District Court’s decision and remanded for entry of an order and judgment confirming the arbitration award. The Company strongly disagrees with the decision of the Court of Appeals and believes that the District Court’s decision was correct. On August 20, 2013, the Company filed a petition for review with the Minnesota Supreme Court and, on October 15, 2013, the Company was informed that the Minnesota Supreme Court granted the Company’s petition. The appeal before the Minnesota Supreme Court has been fully briefed, and oral argument is scheduled for February 5, 2014. The Company will continue to vigorously defend itself in this matter. In light of uncertainties with respect to this matter, the Company recorded an accrual of $681 million for this matter in its financial statements in the fourth quarter of fiscal 2013 and recorded additional interest totaling $13 million and $26 million in the three and six months ended December 27, 2013, respectively, which is included within charges related to arbitration award in the condensed consolidated statements of income. This amount is in addition to the $25 million previously accrued in the fourth quarter of fiscal 2011. The total amount accrued of $732 million represents the amount of the final arbitration award, plus interest accrued on the initial arbitration award at the statutory rate of 10% from January 24, 2012 through December 27, 2013.
	Other Matters
	In the normal course of business, the Company is subject to other legal proceedings, lawsuits and other claims. Although the ultimate aggregate amount of probable monetary liability or financial impact with respect to these other matters is subject to many uncertainties and is therefore not predictable with assurance, management believes that any monetary liability or financial impact to the Company from these other matters, individually and in the aggregate, would not be material to the Company’s financial condition, results of operations or cash flows. However, there can be no assurance with respect to such result, and monetary liability or financial impact to the Company from these other matters could differ materially from those projected.

Income_Taxes

Income Taxes	6 Months Ended
	Dec. 27, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	6. Income Taxes
	The Company’s income tax provision for the three and six months ended December 27, 2013 was $37 million and $74 million, respectively, as compared to $133 million and $192 million in the respective prior-year periods. The Company recorded an $88 million charge to reduce its previously recognized California deferred tax assets in the six months ended December 28, 2012 as a result of the enactment of California Proposition 39. The differences between the effective tax rate and the U.S. Federal statutory rate are primarily due to tax holidays in Malaysia, the Philippines, Singapore and Thailand that expire at various dates from 2014 through 2025 and the current year generation of income tax credits.
	In the three months ended December 27, 2013, the Company recorded a net increase of $10 million in its liability for unrecognized tax benefits. In the six months ended December 27, 2013, the Company recorded a net increase of $23 million in its liability for unrecognized tax benefits. In addition, the Company recorded a $3 million increase related to the Virident and sTec acquisitions in the six months ended December 27, 2013. As of December 27, 2013, the Company had a recorded liability for unrecognized tax benefits of approximately $263 million. Interest and penalties recognized on such amounts were not material to the condensed consolidated financial statements during the three and six months ended December 27, 2013.
	The Internal Revenue Service (“IRS”) previously completed its field examination of the Company’s federal income tax returns for fiscal years 2006 and 2007 and issued Revenue Agent Reports that proposed adjustments to income before income taxes of approximately $970 million primarily related to transfer pricing and intercompany payable balances. The Company disagreed with the proposed adjustments and filed a protest with the IRS Appeals Office. In June 2013, the Company reached an agreement with the IRS to resolve the transfer pricing issue. This agreement resulted in a decrease in the amount of net operating loss and tax credits realized, but did not have an impact on the Company’s consolidated statements of income. The proposed adjustment relating to intercompany payable balances for fiscal years 2006 and 2007 will be addressed in conjunction with the IRS’s examination of the Company’s fiscal years 2008 and 2009, which commenced in January 2012. In addition, in January 2012, the IRS commenced an examination of the 2007 fiscal period ended September 5, 2007 of Komag, Incorporated, which was acquired by the Company on September 5, 2007. In February 2013, the IRS commenced an examination of calendar years 2010 and 2011 of HGST, which was acquired by the Company on March 8, 2012.
	The Company believes that adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with management’s expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. As of December 27, 2013, it is not possible to estimate the amount of change, if any, in the unrecognized tax benefits that is reasonably possible within the next twelve months. Any significant change in the amount of the Company’s liability for unrecognized tax benefits would most likely result from additional information or settlements relating to the examination of the Company’s tax returns.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Dec. 27, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	7. Fair Value Measurements
	Financial assets and liabilities that are remeasured and reported at fair value at each reporting period are classified and disclosed in one of the following three levels:
	Level 1. Quoted prices in active markets for identical assets or liabilities.
	Level 2. Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3. Inputs that are unobservable for the asset or liability and that are significant to the fair value of the assets or liabilities.
	The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of December 27, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such value (in millions):
		Fair Value Measurements at
		Reporting Date Using
		Level 1		Level 2		Level 3		Total
	Assets:
	Cash equivalents:
	Money market funds	$	1,739	$	—	$	—	$	1,739
	Auction-rate securities	—		—		14		14
	Total assets at fair value	$	1,739	$	—	$	14	$	1,753
	Liabilities:
	Foreign exchange contracts	$	—	$	73	$	—	$	73
	Total liabilities at fair value	$	—	$	73	$	—	$	73
	The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of June 28, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such value (in millions):
		Fair Value Measurements at
		Reporting Date Using
		Level 1		Level 2		Level 3		Total
	Assets:
	Cash equivalents:
	Money market funds	$	1,227	$	—	$	—	$	1,227
	Auction-rate securities	—		—		14		14
	Total assets at fair value	$	1,227	$	—	$	14	$	1,241
	Liabilities:
	Foreign exchange contracts	$	—	$	57	$	—	$	57
	Total liabilities at fair value	$	—	$	57	$	—	$	57
	Money Market Funds. The Company’s money market funds are funds that invest in U.S. Treasury and U.S. Government Agency securities and are recorded within cash and cash equivalents in the condensed consolidated balance sheets. Money market funds are valued based on quoted market prices.
	Auction-Rate Securities. The Company’s auction-rate securities have maturity dates through 2050, are primarily backed by insurance products and are accounted for as available-for-sale securities. These investments are classified as long-term investments and recorded within other non-current assets in the condensed consolidated balance sheets. Auction-rate securities are valued by a third party using trade information related to the secondary market.
	Foreign Exchange Contracts. The Company’s foreign exchange contracts are short-term contracts to hedge the Company’s foreign currency risk. Foreign exchange contracts are classified within other current assets and liabilities in the condensed consolidated balance sheets. For contracts that have a right of offset by its individual counterparties under master netting arrangements, the Company presents its foreign exchange contracts on a net basis by counterparty in the condensed consolidated balance sheets. For more information on the Company's foreign exchange contracts, see Note 8 below. Foreign exchange contracts are valued using an income approach that is based on a present value of future cash flows model. The market-based observable inputs for the model include forward rates and credit default swap rates.
	In the three and six months ended December 27, 2013, there were no transfers between levels and no changes in Level 3 financial assets measured on a recurring basis.
	The carrying amounts of cash, accounts receivable, accounts payable and accrued expenses approximate fair value for all periods presented because of the short-term maturity of these assets and liabilities. The carrying amount of debt approximates fair value because of its variable interest rate.

Foreign_Exchange_Contracts

Foreign Exchange Contracts	6 Months Ended
	Dec. 27, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Foreign Exchange Contracts	'
	8. Foreign Exchange Contracts
	Although the majority of the Company’s transactions are in U.S. dollars, some transactions are based in various foreign currencies. The Company purchases short-term, foreign exchange contracts to hedge the impact of foreign currency exchange fluctuations on certain underlying assets, liabilities and commitments for operating expenses and product costs denominated in foreign currencies. The purpose of entering into these hedging transactions is to minimize the impact of foreign currency fluctuations on the Company’s results of operations. These contract maturity dates do not exceed 12 months. All foreign exchange contracts are for risk management purposes only. The Company does not purchase foreign exchange contracts for trading purposes. As of December 27, 2013, the Company had outstanding foreign exchange contracts with commercial banks for British Pound Sterling, Euro, Japanese Yen, Malaysian Ringgit, Philippine Peso, Singapore Dollar and Thai Baht, which were designated as either cash flow or fair value hedges.
	If the derivative is designated as a cash flow hedge, the effective portion of the change in fair value of the derivative is initially deferred in other comprehensive income (loss), net of tax and presented within cash flow from operations. These amounts are subsequently recognized into earnings when the underlying cash flow being hedged is recognized into earnings. Recognized gains and losses on foreign exchange contracts entered into for manufacturing-related activities are reported in cost of revenue. Hedge effectiveness is measured by comparing the hedging instrument’s cumulative change in fair value from inception to maturity to the underlying exposure’s terminal value. The Company determined the ineffectiveness associated with its cash flow hedges to be immaterial to the condensed consolidated financial statements for the three and six months ended December 27, 2013 and December 28, 2012.
	A change in the fair value of fair value hedges is recognized in earnings in the period incurred and is reported as a component of operating expenses. All fair value hedges were determined to be effective. The fair value and the changes in fair value on these contracts were immaterial to the condensed consolidated financial statements during the three and six months ended December 27, 2013 and December 28, 2012.
	As of December 27, 2013, the net amount of unrealized losses with respect to the Company’s foreign exchange contracts that is expected to be reclassified into earnings within the next 12 months was $60 million. In addition, as of December 27, 2013, the Company did not have any foreign exchange contracts with credit-risk-related contingent features. The Company opened $1.7 billion and $2.7 billion and closed $1.3 billion and $2.7 billion, in foreign exchange contracts in the three and six months ended December 27, 2013, respectively. The Company opened $647 million and $1.4 billion and closed $923 million and $2.0 billion, in foreign exchange contracts in the three and six months ended December 28, 2012, respectively. The fair value and balance sheet location of such contracts were as follows (in millions):
		Asset Derivatives						Liability Derivatives
		27-Dec-13			28-Jun-13			27-Dec-13			28-Jun-13
	Derivatives Designated as	Balance Sheet	Fair		Balance Sheet	Fair		Balance Sheet	Fair		Balance Sheet	Fair
	Hedging Instruments	Location	Value		Location	Value		Location	Value		Location	Value
	Foreign exchange contracts	Other current assets	$	—	Other current assets	$	—	Accrued expenses	$	73	Accrued expenses	$	57
	The following table presents the gross amounts of the Company's derivative instruments, amounts offset due to master netting arrangements with the Company's various counterparties, and the net amounts recognized in the condensed consolidated balance sheet as of December 27, 2013 (in millions):
											Gross Amounts Not Offset in the Balance Sheet
	Derivatives Designated as	Gross Amounts of Recognized Assets (Liabilities)			Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets (Liabilities) Presented in the Balance Sheet			Financial Instruments				Cash Collateral Received or Pledged		Net Amount
	Hedging Instruments
	Foreign exchange contracts
	Financial liabilities	$	(73	)	$	—		$	(73	)	$	—			$	—	$	(73	)
	Total derivative instruments	$	(73	)	$	—		$	(73	)	$	—			$	—	$	(73	)
	The following table presents the gross amounts of the Company's derivative instruments, amounts offset due to master netting arrangements with the Company's various counterparties, and the net amounts recognized in the condensed consolidated balance sheet as of June 28, 2013 (in millions):
											Gross Amounts Not Offset in the Balance Sheet
	Derivatives Designated as	Gross Amounts of Recognized Assets (Liabilities)			Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets (Liabilities) Presented in the Balance Sheet			Financial Instruments				Cash Collateral Received or Pledged		Net Amount
	Hedging Instruments
	Foreign exchange contracts
	Financial assets	$	10		$	(10	)	$	—		$	—			$	—	$	—
	Financial liabilities	(67		)	10			(57		)	—				—		(57		)
	Total derivative instruments	$	(57	)	$	—		$	(57	)	$	—			$	—	$	(57	)
	The impact on the condensed consolidated financial statements was as follows (in millions):
		Amount of Gain (Loss) Recognized in												Location of	Amount of Gain Reclassified
		Accumulated OCI on Derivatives												Gain (Loss)	From Accumulated OCI into Income
														Reclassified
														from
														Accumulated
	Derivatives in Cash	Three			Six			Three			Six			OCI into	Three		Six			Three		Six
	Flow Hedging Relationships	Months			Months			Months			Months			Income	Months		Months			Months		Months
		Ended			Ended			Ended			Ended				Ended		Ended			Ended		Ended
		December 27,						December 28,							December 27,					December 28,
		2013						2012							2013					2012
	Foreign exchange contracts	$	—		$	(11	)	$	14		$	45		Cost of revenue	$	30	$	3		$	16	$	19
	The total net realized transaction and foreign exchange contract currency gains and losses were not material to the condensed consolidated financial statements during the three and six months ended December 27, 2013 and December 28, 2012.

StockBased_Compensation

Stock-Based Compensation	6 Months Ended
	Dec. 27, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	9. Stock-Based Compensation
	In connection with the acquisition of Virident, the Company assumed all stock options that were outstanding and unvested as of the acquisition date. In connection with the acquisition of sTec, the Company assumed all of the unvested RSUs outstanding under sTec’s stock plans as of the acquisition date.  In addition, the Company assumed all of the stock options outstanding under sTec’s stock plans as of the acquisition date with the exception of any unvested, unexercised and outstanding stock options that had an exercise price greater than the merger consideration as defined in the merger agreement. The assumed stock options and RSUs were converted into equivalent stock options and RSUs with respect to shares of the Company’s common stock using an equity award exchange ratio.
	Stock-based Compensation Expense
	During the three and six months ended December 27, 2013, the Company recognized in expense $24 million and $45 million for stock-based compensation related to the vesting of options issued under the Company’s stock plans and the ESPP, respectively, as compared to $24 million and $49 million in the respective prior-year periods. The tax benefit realized as a result of the aforementioned stock-based compensation expense was $6 million and $11 million in the three and six months ended December 27, 2013, respectively, as compared to $6 million and $13 million in the three and six months ended December 28, 2012, respectively. As of December 27, 2013, total compensation cost related to unvested stock options and ESPP rights issued to employees but not yet recognized was $161 million and will be amortized on a straight-line basis over a weighted average service period of approximately 2.2 years.
	During the three and six months ended December 27, 2013, the Company recognized in expense $18 million and $39 million for stock-based compensation related to the vesting of awards of RSUs issued under the Company's stock plans, respectively, as compared to $12 million and $25 million in the respective prior-year periods. The tax benefit realized as a result of the aforementioned stock-based compensation expense was $5 million and $9 million in the three and six months ended December 27, 2013, respectively, as compared to $3 million and $7 million in the three and six months ended December 28, 2012. As of December 27, 2013, the aggregate unamortized fair value of all unvested RSUs was $127 million, which will be recognized on a straight-line basis over a weighted average vesting period of approximately 1.8 years. RSUs include performance stock unit awards (“PSUs”). The effect of PSUs was immaterial to the condensed consolidated financial statements in the three and six months ended December 27, 2013 and December 28, 2012.
	During the three and six months ended December 27, 2013, the Company recognized in expense $20 million and $24 million related to adjustments to market value as well as the vesting of stock appreciation rights (“SARs”), as compared to $4 million and $16 million in the respective prior-year periods. The tax benefit realized as a result of the aforementioned SARs expense was $4 million and $5 million in the three and six months ended December 27, 2013, as compared to $1 million and $4 million in the three and six months ended December 28, 2012, respectively. The SARs will be settled in cash upon exercise. As a result, the Company had a total liability of $66 million related to SARs included in accrued expenses in the condensed consolidated balance sheet as of December 27, 2013. In addition, as of December 27, 2013, total compensation cost related to unvested SARs issued to employees but not yet recognized was $5 million and will be recognized on a straight-line basis over a weighted average service period of approximately 0.3 years.
	Stock Option Activity
	The following table summarizes stock option activity under the Company’s stock option plans (in millions, except per share amounts and remaining contractual lives):
		Number			Weighted			Weighted	Aggregate
		of			Average			Average	Intrinsic
		Shares			Exercise			Remaining	Value
					Price			Contractual
					Per			Life
					Share			(in years)
	Options outstanding at June 28, 2013	11.9			$	29.47
	Granted	1.6			68.4
	Assumed in acquisition	0.4			117.41
	Exercised	(0.7	)		30.14
	Canceled or expired	(0.1	)		29.93
	Options outstanding at September 27, 2013	13.1			36.77
	Assumed in acquisition	1.3			12.32
	Exercised	(1.6	)		25.34
	Canceled or expired	(0.3	)		76.28
	Options outstanding at December 27, 2013	12.5			34.99			4.8	$	610
	Exercisable at December 27, 2013	4.8			$	32.45		3.2	$	253
	Vested and expected to vest after December 27, 2013	12.3			$	34.79		4.8	$	602
	If an option has an exercise price that is less than the quoted price of the Company’s common stock at the particular time, the aggregate intrinsic value of that option at that time is calculated based on the difference between the exercise price of the underlying options and the quoted price of the Company’s common stock at that time. As of December 27, 2013, the Company had options outstanding to purchase an aggregate of 12.3 million shares with an exercise price below the quoted price of the Company’s stock on that date resulting in an aggregate intrinsic value of $610 million at that date. During the three and six months ended December 27, 2013, the aggregate intrinsic value of options exercised under the Company’s stock option plans was $80 million and $107 million, respectively, determined as of the date of exercise, as compared to $25 million and $79 million in the respective prior-year periods.
	RSU Activity
	The following table summarizes RSU activity under the Company's stock plans (in millions, except weighted average grant date fair value):
		Number			Weighted Average
		of Shares			Grant-Date
					Fair Value
	RSUs outstanding at June 28, 2013	3.6			$	35.82
	Granted	1.3			68.41
	Assumed in acquisition	0.2			62.73
	Vested	(0.9	)		29.73
	RSUs outstanding at September 27, 2013	4.2			48.39
	Granted	0.1			74.54
	Vested	(0.2	)		42.86
	Forfeited	(0.1	)		46.19
	RSUs outstanding at December 27, 2013	4			$	49.1
	Expected to vest after December 27, 2013	3.8			$	48.86
	The fair value of each RSU is the market price of the Company’s stock at the date of grant. RSUs are generally payable in an equal number of shares of the Company’s common stock at the time of vesting of the units. The grant-date fair value of the shares underlying the RSU awards at the date of grant was $4 million and $92 million in the three and six months ended December 27, 2013, respectively. These amounts are being recognized to expense over the corresponding vesting periods. For purposes of valuing these awards, the Company has assumed a forfeiture rate of 3.5% and 3.3%, for the three and six months ended December 27, 2013, respectively, based on a historical analysis indicating forfeitures for these types of awards.
	SARs Activity
	The share-based compensation liability for SARs is recognized for the portion of fair value for which service has been rendered at the reporting date. The share-based liability is remeasured at each reporting date, using a binomial option-pricing model, through the requisite service period. As of December 27, 2013, 1.0 million SARs were outstanding with a weighted average exercise price of $7.92. There were no SARs granted and all other SARs activity was immaterial to the condensed consolidated financial statements for the three and six months ended December 27, 2013.
	Fair Value Disclosure — Binomial Model
	The fair value of stock options granted is estimated using a binomial option-pricing model. The binomial model requires the input of highly subjective assumptions. The Company uses historical data to estimate exercise, employee termination, and expected stock price volatility within the binomial model. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The fair value of stock options granted was estimated using the following weighted average assumptions:
		Three Months Ended				Six Months Ended
		December 27,		December 28,		December 27,	December 28,
		2013		2012		2013	2012
	Suboptimal exercise factor	2.2		1.92		2.06	1.9
	Range of risk-free interest rates	0.12% to 2.44%		0.16% to 1.18%		0.10% to 2.44%	0.16% to 1.18%
	Range of expected stock price volatility	0.29 to 0.49		0.42 to 0.52		0.29 to 0.50	0.42 to 0.53
	Weighted average expected volatility	0.41		0.47		0.43	0.49
	Post-vesting termination rate	3.18%		2.41%		3.09%	2.09%
	Dividend yield	1.45%		2.41%		1.58%	2.58%
	Fair value	$25.29		$13.08		$24.03	$15.56
	The weighted average expected term of the Company’s stock options granted during the three and six months ended December 27, 2013 was 5.4 years and 5.0 years, respectively, compared to 4.2 years and 4.0 years in the respective prior-year periods.
	Fair Value Disclosure — Black-Scholes-Merton Model
	The fair value of ESPP purchase rights issued is estimated at the date of grant of the purchase rights using the Black-Scholes-Merton option-pricing model. The Black-Scholes-Merton option-pricing model requires the input of highly subjective assumptions such as the expected stock price volatility and the expected period until options are exercised. Purchase rights under the current ESPP are granted on either June 1st or December 1st of each year. ESPP activity was immaterial to the condensed consolidated financial statements for the three and six months ended December 27, 2013 and December 28, 2012.
	Stock Repurchase Program
	Since May 21, 2012, the Company's Board of Directors has authorized an additional $3.0 billion for the repurchase of its common stock and the extension of its stock repurchase program through September 13, 2017. The Company repurchased 2.0 million and 4.3 million shares for a total cost of $150 million and $300 million during the three and six months ended December 27, 2013, respectively. The remaining amount available to be purchased under the Company’s stock repurchase program as of December 27, 2013 was $1.7 billion. The Company may continue to repurchase its stock as it deems appropriate and market conditions allow. Repurchases under the stock repurchase program may be made in the open market or in privately negotiated transactions and may be made under a Rule 10b5-1 plan. The Company expects stock repurchases to be funded principally by operating cash flows and borrowings under the Company's Credit Agreement.
	Dividends to Shareholders
On September 13, 2012, the Company announced that its Board of Directors had authorized the adoption of a quarterly cash dividend policy. Under the cash dividend policy, holders of the Company’s common stock receive dividends when and as declared by the Company’s Board of Directors. In the three months ended December 27, 2013, the Company declared a cash dividend of $0.30 per share of the Company’s common stock to shareholders of record as of December 27, 2013, totaling $71 million, which was paid on January 15, 2014. In addition, in the three months ended September 27, 2013, the Company declared a cash dividend of $0.25 per share of the Company's common stock to shareholders of record as of September 30, 2013, for a total of $59 million which was paid on October 15, 2013. The Company may modify, suspend or cancel its cash dividend policy in any manner and at any time.

Pensions_and_Other_Postretirem

Pensions and Other Post-retirement Benefit Plans	6 Months Ended
	Dec. 27, 2013
Compensation and Retirement Disclosure [Abstract]	'
Pensions and Other Post-retirement Benefit Plans	'
	10. Pensions and Other Post-retirement Benefit Plans
	The Company’s principal pension and other post-retirement benefit plans are in Japan. All pension and other post-retirement benefit plans outside of the Company’s Japanese plans were immaterial to the Company’s condensed consolidated financial statements for the three and six months ended December 27, 2013 and December 28, 2012. The expected long-term rate of return on the Japanese plan assets is 3.5%.
	The following table presents the unfunded status of the benefit obligations and Japanese plan assets (in millions):
		December 27,			June 28,
		2013			2013
	Benefit obligation	$	234		$	234
	Fair value of plan assets	(172		)	(167		)
	Unfunded status	$	62		$	67
	The following table presents the unfunded amounts as recognized on the Company’s condensed consolidated balance sheets (in millions):
		December 27,			June 28,
		2013			2013
	Current liabilities	$	1		$	1
	Non-current liabilities	61			66
	Net amount recognized	$	62		$	67
	The net periodic benefit cost of the Company’s pension plans was not material to the condensed consolidated financial statements for the three and six months ended December 27, 2013 and December 28, 2012. The Company’s expected employer contribution for its Japanese defined benefit pension plans is $13 million in fiscal 2014.

Acquisition

Acquisition	6 Months Ended
	Dec. 27, 2013
Business Combinations [Abstract]	'
Acquisition	'
	11. Acquisitions
	Acquisition of Virident
	On October 17, 2013, the Company acquired Virident, a provider of server-side flash storage solutions for virtualization, database, cloud computing and webscale applications. As a result of the acquisition, Virident was fully integrated into the Company's HGST subsidiary and became a wholly owned indirect subsidiary of the Company. The purchase price of the acquisition was approximately $613 million, consisting of $598 million which was funded with available cash and $15 million related to the fair value of stock options assumed. The acquisition is expected to further HGST's strategy to address the rapidly changing needs of enterprise customers by delivering intelligent storage solutions that maximize application performance by leveraging the tightly coupled server, storage and network resources of today’s converged datacenter infrastructures.
	The Company identified and recorded the assets acquired and liabilities assumed at their estimated fair values at the date of acquisition, and allocated the remaining value of $505 million to goodwill. The values assigned to the acquired assets and liabilities are based on preliminary estimates of fair value available as of the date of this Quarterly Report on Form 10-Q, and may be adjusted during the measurement period of up to 12 months from the date of the acquisition as further information becomes available with any changes in the fair values potentially resulting in material adjustments to goodwill. The individual tangible and intangible assets acquired as well as the liabilities assumed in the acquisition were immaterial to the Company's condensed consolidated financial statements. In addition, pro forma financial information has not been presented as the acquisition did not have a material impact on the Company’s condensed consolidated financial statements for the three months ended December 27, 2013.
	The preliminary purchase price allocation for Virident was as follows (in millions):
		October 17,
		2013
	Tangible net assets acquired and liabilities assumed	$	59
	Intangible assets	49
	Goodwill	505
	Total	$	613
	The $505 million of goodwill recognized is primarily attributable to the benefits the Company expects to derive from an ability to create server-side flash storage solutions leveraging the core technology acquired and is not expected to be deductible for tax purposes. The impact to revenue and net income attributable to Virident was immaterial to the Company’s condensed consolidated financial statements for the three months ended December 27, 2013.
	Acquisition of sTec
	On September 12, 2013, the Company completed its acquisition of sTec, a provider of enterprise solid-state drives. As a result of the acquisition, sTec was fully integrated into the Company's HGST subsidiary and became a wholly owned indirect subsidiary of the Company. The purchase price of the acquisition was approximately $336 million, consisting of $325 million which was funded with available cash and $11 million related to the fair value of stock options and RSUs assumed. The acquisition is intended to augment HGST's existing solid-state storage capabilities.
	The Company identified and recorded the assets acquired and liabilities assumed at their estimated fair values at the date of acquisition, and allocated the remaining value of $85 million to goodwill. The values assigned to the acquired assets and liabilities are based on preliminary estimates of fair value available as of the date of this Quarterly Report on Form 10-Q, and may be adjusted as further information becomes available during the measurement period of up to 12 months from the date of the acquisition. The primary areas of the preliminary purchase price allocation that are not yet finalized due to information that may become available subsequently include contingencies and income taxes and any changes in these fair values could potentially result in material adjustments to goodwill. The individual tangible and intangible assets acquired as well as the liabilities assumed in the acquisition were immaterial to the Company's condensed consolidated financial statements. In addition, pro forma financial information has not been presented as the acquisition did not have a material impact on the Company’s condensed consolidated financial statements for the three and six months ended December 27, 2013.
	The preliminary purchase price allocation for sTec was as follows (in millions):
		September 12,
		2013
	Tangible net assets acquired and liabilities assumed	$	193
	Intangible assets	58
	Goodwill	85
	Total	$	336
	The $85 million of goodwill recognized is primarily attributable to the benefits the Company expects to derive from augmenting HGST's existing solid-state storage capabilities and accelerating its ability to expand its participation in the growing area of enterprise solid-state drives ("SSDs") and is not expected to be deductible for tax purposes. The impact to revenue and net income attributable to sTec was immaterial to the Company’s condensed consolidated financial statements for the three and six months ended December 27, 2013.
	Acquisition of VeloBit
	On July 10, 2013, the Company acquired VeloBit, a privately held provider of high-performance storage I/O optimization software. As a result of the acquisition, VeloBit was fully integrated into the Company's HGST subsidiary and became a wholly owned indirect subsidiary of the Company. The acquisition is intended to build on HGST's strategy to enhance the overall value of datacenter storage by integrating HGST SSDs with software. The acquisition was not material to the Company's condensed consolidated financial statements.

Employee_Termination_Benefits_

Employee Termination Benefits and Other Charges	6 Months Ended
	Dec. 27, 2013
Postemployment Benefits [Abstract]	'
Employee Termination Benefits and Other Charges	'
	12. Employee Termination Benefits and Other Charges
	During 2013, the Company incurred charges of $138 million to realign its operations with anticipated market demand. These charges consisted of $109 million of employee termination benefits, $14 million of asset impairment charges and $15 million of contract and other termination charges and were classified as operating expenses and included within employee termination benefits and other charges in the consolidated statements of income. At June 28, 2013, the Company had a liability of $46 million related to these charges. In the six months ended December 27, 2013, the Company paid $30 million of employee termination benefits and settled $9 million of contract and other termination charges. As a result, the Company's remaining liability totaled $7 million at December 27, 2013 and is expected to be settled by the end of fiscal 2014.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	6 Months Ended
	Dec. 27, 2013
Accounting Changes and Error Corrections [Abstract]	'
Recent Accounting Pronouncements	'
	13. Recent Accounting Pronouncements
	In February 2013, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income” (“ASU 2013-02”). The new standard requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. The Company adopted this pronouncement in the first quarter of fiscal 2014. Since ASU 2013-02 related only to the presentation and disclosure of information, it did not have a material effect on the Company’s condensed consolidated financial statements.
	In July 2013, the FASB issued ASU 2013-11, "Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists" ("ASU 2013-11"). The new standard requires the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than as liabilities in the condensed consolidated balance sheets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The new standard is effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2013, which for the Company is the first quarter of fiscal 2015. The Company is currently evaluating the impact ASU 2013-11 will have to its condensed consolidated balance sheets.

Subsequent_Event_Subsequent_Ev

Subsequent Event Subsequent Event (Notes)	6 Months Ended
	Dec. 27, 2013
Subsequent Events [Abstract]	'
Subsequent Event	'
	14. Subsequent Event
	On January 9, 2014 (the "Closing Date”), WDI used existing cash to repay the outstanding term loan balance of $1.8 billion under the Credit Facility, and subsequently, on the Closing Date, Western Digital Corporation, WDT and WDI, entered into a new Credit Agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the lenders party thereto (the "Credit Agreement"); WDT paid the outstanding revolving credit facility balance of $500 million under the Credit Facility; and the Company terminated the Credit Facility. The Credit Agreement provides for $4.0 billion of unsecured loan facilities consisting of a $2.5 billion term loan facility to WDT and a $1.5 billion revolving credit facility to WDT and WDI (the “Borrowers”). The revolving credit facility includes a $100 million sublimit for letters of credit and a $50 million sublimit for swing line loans. Subject to certain conditions, a Borrower may elect to expand the credit facilities by, or obtain incremental term loans of, up to $1.0 billion if existing or new lenders provide additional term or revolving commitments. The loans under the Credit Agreement have a five-year term. The obligations of the Borrowers under the Credit Agreement are guaranteed by Western Digital Corporation and its material domestic subsidiaries, and the obligations of WDI under the Credit Agreement are also guaranteed by WDT.
	As of the date of this Quarterly Report on Form 10-Q, the outstanding term loan balance under the Credit Agreement was $2.5 billion. The Company is required to make quarterly principal payments on the term loan facility beginning in March 2014, totaling $63 million for the remainder of fiscal 2014, $125 million in fiscal 2015, $156 million in fiscal 2016, $219 million in fiscal 2017, $250 million in fiscal 2018 and the remaining balance of $1.7 billion in fiscal 2019.
	The Credit Agreement requires the Company to comply with a leverage ratio and an interest coverage ratio calculated on a consolidated basis for the Company and its subsidiaries. In addition, the Credit Agreement contains customary covenants, including covenants that limit or restrict the Company’s and its subsidiaries’ ability to incur liens, incur indebtedness, make certain restricted payments, merge or consolidate and enter into certain speculative hedging arrangements, and customary events of default. As of the date of this Quarterly Report on Form 10-Q, the Company was in compliance with all covenants.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	6 Months Ended
	Dec. 27, 2013
Accounting Policies [Abstract]	'
Use of Estimates and Assumption	'
	Company management has made estimates and assumptions relating to the reporting of certain assets and liabilities in conformity with U.S. GAAP. These estimates and assumptions have been applied using methodologies that are consistent throughout the periods presented. However, actual results could differ materially from these estimates.

Supplemental_Financial_Stateme1

Supplemental Financial Statement Data (Tables)	6 Months Ended
	Dec. 27, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Inventories; Property, Plant and Equipment; and Other Intangible Assets	'
		December 27,			June 28,
		2013			2013
		(in millions)
	Inventories:
	Raw materials and component parts	$	201		$	167
	Work-in-process	581			575
	Finished goods	511			446
	Total inventories	$	1,293		$	1,188
	Property, plant and equipment:
	Property, plant and equipment	$	7,879		$	7,616
	Accumulated depreciation	(4,370		)	(3,916		)
	Property, plant and equipment, net	$	3,509		$	3,700
	Other intangible assets:
	Other intangible assets	$	1,060		$	948
	Accumulated amortization	(453		)	(343		)
	Other intangible assets, net	$	607		$	605
Changes in Warranty Accrual	'
	Changes in the warranty accrual were as follows (in millions):
		Three Months						Six Months
		Ended						Ended
		December 27,			28-Dec-12			December 27,			28-Dec-12
		2013						2013
	Warranty accrual, beginning of period	$	195		$	230		$	187		$	260
	Warranty liability assumed as a result of acquisition (see Note 11)	1			—			4			—
	Charges to operations	44			44			84			90
	Utilization	(57		)	(51		)	(106		)	(111		)
	Changes in estimate related to pre-existing warranties	7			(12		)	21			(28		)
	Warranty accrual, end of period	$	190		$	211		$	190		$	211
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The following table illustrates the changes in the balances of each component of accumulated other comprehensive income for the six months ended December 28, 2012 (in millions):
		Actuarial Pension Gain (Loss)			Foreign Currency Translation Gain (Loss)			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
	Balance at June 29, 2012	$	(3	)	$	4		$	(16	)	$	(15	)
	Other comprehensive income before reclassifications	1			—			45			46
	Amounts reclassified from accumulated other comprehensive income	—			(4		)	(19		)	(23		)
	Net current-period other comprehensive income	1			(4		)	26			23
	Balance at December 28, 2012	$	(2	)	$	—		$	10		$	8
	The following table illustrates the changes in the balances of each component of accumulated other comprehensive income for the six months ended December 27, 2013 (in millions):
		Actuarial Pension Gain (Loss)			Foreign Currency Translation Gain (Loss)			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
	Balance at June 28, 2013	$	11		$	—		$	(46	)	$	(35	)
	Other comprehensive income before reclassifications	—			—			(11		)	(11		)
	Amounts reclassified from accumulated other comprehensive income	—			—			(3		)	(3		)
	Net current-period other comprehensive income	—			—			(14		)	(14		)
	Balance at December 27, 2013	$	11		$	—		$	(60	)	$	(49	)

Income_per_Common_Share_Tables

Income per Common Share (Tables)	6 Months Ended
	Dec. 27, 2013
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Income Per Common Share	'
	The following table illustrates the computation of basic and diluted income per common share (in millions, except per share data):
		Three Months				Six Months
		Ended				Ended
		27-Dec-13		28-Dec-12		27-Dec-13		28-Dec-12
	Net income	$	430	$	335	$	925	$	854
	Weighted average shares outstanding:
	Basic	236		242		236		244
	Employee stock options and other	7		4		7		5
	Diluted	243		246		243		249
	Income per common share:
	Basic	$	1.82	$	1.38	$	3.92	$	3.5
	Diluted	$	1.77	$	1.36	$	3.81	$	3.43
	Anti-dilutive potential common shares excluded*	2		7		1		6
	*	For purposes of computing diluted income per common share, certain potentially dilutive securities have been excluded from the calculation because their effect would have been anti-dilutive.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Dec. 27, 2013
Fair Value Disclosures [Abstract]	'
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	'
	The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of December 27, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such value (in millions):
		Fair Value Measurements at
		Reporting Date Using
		Level 1		Level 2		Level 3		Total
	Assets:
	Cash equivalents:
	Money market funds	$	1,739	$	—	$	—	$	1,739
	Auction-rate securities	—		—		14		14
	Total assets at fair value	$	1,739	$	—	$	14	$	1,753
	Liabilities:
	Foreign exchange contracts	$	—	$	73	$	—	$	73
	Total liabilities at fair value	$	—	$	73	$	—	$	73
	The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of June 28, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such value (in millions):
		Fair Value Measurements at
		Reporting Date Using
		Level 1		Level 2		Level 3		Total
	Assets:
	Cash equivalents:
	Money market funds	$	1,227	$	—	$	—	$	1,227
	Auction-rate securities	—		—		14		14
	Total assets at fair value	$	1,227	$	—	$	14	$	1,241
	Liabilities:
	Foreign exchange contracts	$	—	$	57	$	—	$	57
	Total liabilities at fair value	$	—	$	57	$	—	$	57

Foreign_Exchange_Contracts_Tab

Foreign Exchange Contracts (Tables)	6 Months Ended
	Dec. 27, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Fair Value and Balance Sheet Location of Contracts	'
	The fair value and balance sheet location of such contracts were as follows (in millions):
		Asset Derivatives						Liability Derivatives
		27-Dec-13			28-Jun-13			27-Dec-13			28-Jun-13
	Derivatives Designated as	Balance Sheet	Fair		Balance Sheet	Fair		Balance Sheet	Fair		Balance Sheet	Fair
	Hedging Instruments	Location	Value		Location	Value		Location	Value		Location	Value
	Foreign exchange contracts	Other current assets	$	—	Other current assets	$	—	Accrued expenses	$	73	Accrued expenses	$	57
Offsetting Assets and Liabilities [Table Text Block]	'
	The following table presents the gross amounts of the Company's derivative instruments, amounts offset due to master netting arrangements with the Company's various counterparties, and the net amounts recognized in the condensed consolidated balance sheet as of June 28, 2013 (in millions):
											Gross Amounts Not Offset in the Balance Sheet
	Derivatives Designated as	Gross Amounts of Recognized Assets (Liabilities)			Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets (Liabilities) Presented in the Balance Sheet			Financial Instruments				Cash Collateral Received or Pledged		Net Amount
	Hedging Instruments
	Foreign exchange contracts
	Financial assets	$	10		$	(10	)	$	—		$	—			$	—	$	—
	Financial liabilities	(67		)	10			(57		)	—				—		(57		)
	Total derivative instruments	$	(57	)	$	—		$	(57	)	$	—			$	—	$	(57	)
	The following table presents the gross amounts of the Company's derivative instruments, amounts offset due to master netting arrangements with the Company's various counterparties, and the net amounts recognized in the condensed consolidated balance sheet as of December 27, 2013 (in millions):
											Gross Amounts Not Offset in the Balance Sheet
	Derivatives Designated as	Gross Amounts of Recognized Assets (Liabilities)			Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets (Liabilities) Presented in the Balance Sheet			Financial Instruments				Cash Collateral Received or Pledged		Net Amount
	Hedging Instruments
	Foreign exchange contracts
	Financial liabilities	$	(73	)	$	—		$	(73	)	$	—			$	—	$	(73	)
	Total derivative instruments	$	(73	)	$	—		$	(73	)	$	—			$	—	$	(73	)
Gains (Losses) of Derivatives in Cash Flow Hedging Relationships	'
	The impact on the condensed consolidated financial statements was as follows (in millions):
		Amount of Gain (Loss) Recognized in												Location of	Amount of Gain Reclassified
		Accumulated OCI on Derivatives												Gain (Loss)	From Accumulated OCI into Income
														Reclassified
														from
														Accumulated
	Derivatives in Cash	Three			Six			Three			Six			OCI into	Three		Six			Three		Six
	Flow Hedging Relationships	Months			Months			Months			Months			Income	Months		Months			Months		Months
		Ended			Ended			Ended			Ended				Ended		Ended			Ended		Ended
		December 27,						December 28,							December 27,					December 28,
		2013						2012							2013					2012
	Foreign exchange contracts	$	—		$	(11	)	$	14		$	45		Cost of revenue	$	30	$	3		$	16	$	19

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	6 Months Ended
	Dec. 27, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock Option Activity	'
	The following table summarizes stock option activity under the Company’s stock option plans (in millions, except per share amounts and remaining contractual lives):
		Number			Weighted			Weighted	Aggregate
		of			Average			Average	Intrinsic
		Shares			Exercise			Remaining	Value
					Price			Contractual
					Per			Life
					Share			(in years)
	Options outstanding at June 28, 2013	11.9			$	29.47
	Granted	1.6			68.4
	Assumed in acquisition	0.4			117.41
	Exercised	(0.7	)		30.14
	Canceled or expired	(0.1	)		29.93
	Options outstanding at September 27, 2013	13.1			36.77
	Assumed in acquisition	1.3			12.32
	Exercised	(1.6	)		25.34
	Canceled or expired	(0.3	)		76.28
	Options outstanding at December 27, 2013	12.5			34.99			4.8	$	610
	Exercisable at December 27, 2013	4.8			$	32.45		3.2	$	253
	Vested and expected to vest after December 27, 2013	12.3			$	34.79		4.8	$	602
Restricted Stock Unit	'
	The following table summarizes RSU activity under the Company's stock plans (in millions, except weighted average grant date fair value):
		Number			Weighted Average
		of Shares			Grant-Date
					Fair Value
	RSUs outstanding at June 28, 2013	3.6			$	35.82
	Granted	1.3			68.41
	Assumed in acquisition	0.2			62.73
	Vested	(0.9	)		29.73
	RSUs outstanding at September 27, 2013	4.2			48.39
	Granted	0.1			74.54
	Vested	(0.2	)		42.86
	Forfeited	(0.1	)		46.19
	RSUs outstanding at December 27, 2013	4			$	49.1
	Expected to vest after December 27, 2013	3.8			$	48.86
Fair Value of Stock Options Granted	'
	The fair value of stock options granted was estimated using the following weighted average assumptions:
		Three Months Ended				Six Months Ended
		December 27,		December 28,		December 27,	December 28,
		2013		2012		2013	2012
	Suboptimal exercise factor	2.2		1.92		2.06	1.9
	Range of risk-free interest rates	0.12% to 2.44%		0.16% to 1.18%		0.10% to 2.44%	0.16% to 1.18%
	Range of expected stock price volatility	0.29 to 0.49		0.42 to 0.52		0.29 to 0.50	0.42 to 0.53
	Weighted average expected volatility	0.41		0.47		0.43	0.49
	Post-vesting termination rate	3.18%		2.41%		3.09%	2.09%
	Dividend yield	1.45%		2.41%		1.58%	2.58%
	Fair value	$25.29		$13.08		$24.03	$15.56

Pensions_and_Other_Postretirem1

Pensions and Other Post-retirement Benefit Plans (Tables)	6 Months Ended
	Dec. 27, 2013
Compensation and Retirement Disclosure [Abstract]	'
Unfunded Status of Benefit Obligations and Plan Assets	'
	The following table presents the unfunded status of the benefit obligations and Japanese plan assets (in millions):
		December 27,			June 28,
		2013			2013
	Benefit obligation	$	234		$	234
	Fair value of plan assets	(172		)	(167		)
	Unfunded status	$	62		$	67
Unfunded Amounts Recognized on Consolidated Balance Sheet	'
	The following table presents the unfunded amounts as recognized on the Company’s condensed consolidated balance sheets (in millions):
		December 27,			June 28,
		2013			2013
	Current liabilities	$	1		$	1
	Non-current liabilities	61			66
	Net amount recognized	$	62		$	67

Acquisition_Tables

Acquisition (Tables)	6 Months Ended
	Dec. 27, 2013
Business Combinations [Abstract]	'
Purchase Price Allocation	'
	The preliminary purchase price allocation for sTec was as follows (in millions):
		September 12,
		2013
	Tangible net assets acquired and liabilities assumed	$	193
	Intangible assets	58
	Goodwill	85
	Total	$	336
	The preliminary purchase price allocation for Virident was as follows (in millions):
		October 17,
		2013
	Tangible net assets acquired and liabilities assumed	$	59
	Intangible assets	49
	Goodwill	505
	Total	$	613

Supplemental_Financial_Stateme2

Supplemental Financial Statement Data - Inventories; Property, Plant and Equipment; and Other Intangible Assets (Detail) (USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Inventories:	'	'
Raw materials and component parts	$201	$167
Work-in-process	581	575
Finished goods	511	446
Total inventories	1,293	1,188
Property, plant and equipment:	'	'
Property, plant and equipment	7,879	7,616
Accumulated depreciation	-4,370	-3,916
Property, plant and equipment, net	3,509	3,700
Other intangible assets:	'	'
Other intangible assets, gross	1,060	948
Accumulated amortization	-453	-343
Other intangible assets, net	$607	$605

Supplemental_Financial_Stateme3

Supplemental Financial Statement Data - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Jun. 28, 2013
Supplemental Financial Statement Data [Abstract]	'	'
Product warranty, Minimum	'1 year	'
Product warranty, Maximum	'5 years	'
Long-term portion of the warranty accrual classified in other liabilities	$73	$73

Supplemental_Financial_Stateme4

Supplemental Financial Statement Data - Changes in Accrual Warranty (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Product Warranties Disclosures [Abstract]	'	'	'	'
Warranty accrual, beginning of period	$195	$230	$187	$260
Warranty liabilities assumed as a result of the Acquisition	1	0	4	0
Charges to operations	44	44	84	90
Utilization	-57	-51	-106	-111
Changes in estimate related to pre-existing warranties	7	-12	21	-28
Warranty accrual, end of period	$190	$211	$190	$211

Supplemental_Financial_Stateme5

Supplemental Financial Statement Data Changes in Balances of Each Component of Accumulated Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Changes in the Balances of Each Component of Accumulated Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	'	'	($35)	($15)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	'	'	-11	46
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	'	'	-3	-23
Other Comprehensive Income (Loss), Net of Tax	-30	-6	-14	23
Ending Balance	-49	8	-49	8
Accumulated Defined Benefit Plans Adjustment [Member]	'	'	'	'
Changes in the Balances of Each Component of Accumulated Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	'	'	11	-3
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	'	'	0	1
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	'	'	0	0
Other Comprehensive Income (Loss), Net of Tax	'	'	0	1
Ending Balance	11	-2	11	-2
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'	'
Changes in the Balances of Each Component of Accumulated Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	'	'	-46	-16
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	'	'	-11	45
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	'	'	-3	-19
Other Comprehensive Income (Loss), Net of Tax	'	'	-14	26
Ending Balance	-60	10	-60	10
Accumulated Translation Adjustment [Member]	'	'	'	'
Changes in the Balances of Each Component of Accumulated Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	'	'	0	4
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	'	'	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	'	'	0	-4
Other Comprehensive Income (Loss), Net of Tax	'	'	0	-4
Ending Balance	$0	$0	$0	$0

Income_per_Common_Share_Comput

Income per Common Share - Computation of Basic and Diluted Income Per Common Share (Detail) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 27, 2013		Dec. 28, 2012		Dec. 27, 2013		Dec. 28, 2012
Earnings Per Share [Abstract]	'		'		'		'
Net income	$430		$335		$925		$854
Weighted average shares outstanding:	'		'		'		'
Basic	236		242		236		244
Employee stock options and other	7		4		7		5
Diluted	243		246		243		249
Income per common share:	'		'		'		'
Basic	$1.82		$1.38		$3.92		$3.50
Diluted	$1.77		$1.36		$3.81		$3.43
Anti-dilutive potential common shares excluded*	2	[1]	7	[1]	1	[1]	6	[1]
[1]	For purposes of computing diluted income per common share, certain potentially dilutive securities have been excluded from the calculation because their effect would have been anti-dilutive.

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	3 Months Ended
	Dec. 27, 2013	Jan. 31, 2014	Jan. 09, 2014	Jun. 28, 2013
Debt Instrument [Line Items]	'	'	'	'
Loan period	'5 years	'	'	'
Total unsecured loan under credit facility	$2,800,000,000	'	$4,000,000,000	'
Credit facility revolving loan	500,000,000	'	1,500,000,000	'
Long-term Debt	1,800,000,000	'	1,800,000,000	'
Line of credit facility additional borrowing capacity	'	'	1,000,000,000	'
Short-term Debt	500,000,000	'	500,000,000	0
Interest rate of borrowing under credit facility	2.16%	'	'	'
Remaining outstanding balance term loan facility	2,300,000,000	2,500,000,000	'	'
Term loan facility [Member]	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Total unsecured loan under credit facility	$2,300,000,000	'	$2,500,000,000	'

Legal_Proceedings_Additional_I

Legal Proceedings - Additional Information (Detail) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Jun. 28, 2013	Dec. 28, 2012	Jul. 01, 2011	Dec. 27, 2013	Dec. 28, 2012	Oct. 12, 2012	Jan. 23, 2012	Nov. 18, 2011
Commitments and Contingencies Disclosure [Abstract]	'	'	'	'	'	'	'	'	'
Issued interim award against losses	'	'	'	'	'	'	'	'	$525
Statutory rate specified as pre-award interest rate	10.00%	'	'	'	'	'	'	'	'
Amount of final award adding pre-award interest issued by the arbitrator	'	'	'	'	'	'	'	105.4	'
Amount of total award issued by the arbitrator	'	'	'	'	'	'	'	630.4	'
Amount of total award issued by arbitrator vacated	'	'	'	'	'	'	630.4	'	'
Arbitration Award Provision	13	681	0	25	26	0	'	'	'
Arbitration Award Reserve	$732	$706	'	'	$732	'	'	'	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Income Tax Disclosure [Line Items]	'	'	'	'
Income tax provision	$37	$133	$74	$192
Charge Related To State Proposition Thirty Nine	'	'	'	88
Expiration date of tax holiday in Malaysia, Philippines, Singapore and Thailand	'	'	'from 2014 through 2025	'
Increase (Decrease) in liability for unrecognized tax benefits	10	'	23	'
Unrecognized Tax Benefits, Increase Resulting from Acquisition	'	'	3	'
Unrecognized tax benefits	263	'	263	'
Western Digital Corporation [Member]	'	'	'	'
Income Tax Disclosure [Line Items]	'	'	'	'
Estimated impact of proposed IRS adjustments on Pre-tax income	$970	'	$970	'

Fair_Value_Measurements_Financ

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign exchange contracts	'	$0
Foreign exchange contracts	-73	-57
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets at fair value	1,753	1,241
Total liabilities at fair value	73	57
Fair Value, Measurements, Recurring [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total cash equivalents	1,739	1,227
Fair Value, Measurements, Recurring [Member] | Foreign exchange contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign exchange contracts	73	57
Fair Value, Measurements, Recurring [Member] | Auction-rate securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Auction-rate securities	14	14
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets at fair value	1,739	1,227
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total cash equivalents	1,739	1,227
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | Foreign exchange contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign exchange contracts	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | Auction-rate securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Auction-rate securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets at fair value	0	0
Total liabilities at fair value	73	57
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total cash equivalents	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | Foreign exchange contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign exchange contracts	73	57
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | Auction-rate securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Auction-rate securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets at fair value	14	14
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total cash equivalents	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | Foreign exchange contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign exchange contracts	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | Auction-rate securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Auction-rate securities	$14	$14

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail)	6 Months Ended
	Dec. 27, 2013
Fair Value Disclosures [Abstract]	'
Maturity of auction-rate securities	'dates through 2050

Foreign_Exchange_Contracts_Add

Foreign Exchange Contracts - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Foreign Exchange Contracts [Abstract]	'	'	'	'
Contract maturity dates	'Less than 12 months	'	'	'
Unrealized gains expected to be reclassified into earnings	$60,000,000	'	$60,000,000	'
Foreign exchange contracts opened during the period by company	1,700,000,000	647,000,000	2,700,000,000	1,400,000,000
Foreign exchange contracts closed during the period by company	$1,300,000,000	$923,000,000	$2,700,000,000	$2,000,000,000

Foreign_Exchange_Contracts_Fai

Foreign Exchange Contracts - Fair Value and Balance Sheet Location of Contracts (Detail) (USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Derivatives Designated as Hedging Instruments Fair value, Asset Derivatives	'	$10
Derivatives Designated as Hedging Instruments Fair Value, Liability Derivatives	73	67
Other current assets [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivatives Designated as Hedging Instruments Fair value, Asset Derivatives	0	0
Accrued expenses [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivatives Designated as Hedging Instruments Fair Value, Liability Derivatives	($73)	($57)

Foreign_Exchange_Contracts_Gai

Foreign Exchange Contracts - Gains (Losses) of Derivatives in Cash Flow Hedging Relationships (Detail) (Foreign exchange contracts [Member], Cash Flow Hedging [Member], USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivatives	$0	$14	($11)	$45
Cost of revenue [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain (Loss) Reclassified From Accumulated OCI into Income	$30	$16	$3	$19

Foreign_Exchange_Contracts_Net

Foreign Exchange Contracts Net Amounts of Foreign Exchange Contract Assets and Liabilities Presented In the Balance Sheet (Details) (USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'
Derivative Asset, Fair Value, Gross Asset	'	$10
Derivative Asset, Fair Value, Amount Offset	'	-10
Derivative Assets	'	0
Derivative Asset, Financial Instruments Subject To Master Netting Arrangement, Elected Not To Be Offset	'	0
Derivative, Collateral, Obligation to Return Cash	'	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	'	0
Derivative Liability, Fair Value, Gross Liability	-73	-67
Derivative Liability, Fair Value, Amount Offset	0	10
Derivative Liabilities	-73	-57
Derivative Liability, Financial Instruments Subject to Master Netting Arrangement, Elected Not to Be Offset	0	0
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	-73	-57
Derivative, Fair Value, Amount Offset	0	0
Derivative Assets	-73	-57
Derivative Assets (Liabilities), at Fair Value, Net	-73	-57
Derivative Financial Instruments Subject To Master Netting Arrangement, Elected Not To Be Offset	0	0
Derivative Collateral Obligation To Return Cash or Right To Reclaim Cash	0	0
Derivative, Fair Value, Amount Offset Against Collateral, Net	($73)	($57)

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended		20 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Dec. 27, 2013	Sep. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012	Jan. 31, 2014
Stock Based Compensation [Abstract]	'	'	'	'	'	'
EmployeeServiceShareBasedCompensationTaxBenefitFromRestrictedStockAmortizationExpense	$5,000,000	'	$3,000,000	$9,000,000	$7,000,000	'
Expenses on stock-based compensation	24,000,000	'	24,000,000	45,000,000	49,000,000	'
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	6,000,000	'	6,000,000	11,000,000	13,000,000	'
Total compensation cost related to unvested stock options and ESPP rights issued	161,000,000	'	'	161,000,000	'	'
Weighted average service period	'	'	'	'2 years 2 months	'	'
Expense related to the vesting of restricted stock unit awards	18,000,000	'	12,000,000	39,000,000	25,000,000	'
Unamortized fair value of all unvested restricted stock unit awards	127,000,000	'	'	127,000,000	'	'
Weighted average vesting period	'	'	'	'1 year 9 months	'	'
Compensation cost for cash-settled stock appreciation rights	20,000,000	'	4,000,000	24,000,000	16,000,000	'
EmployeeServiceShareBasedCompensationTaxBenefitFromStockAppreciationRightsCompensationExpense	4,000,000	'	1,000,000	5,000,000	4,000,000	'
Total liability related to SARs	66,000,000	'	'	66,000,000	'	'
Total compensation cost related to unvested SARs	5,000,000	'	'	5,000,000	'	'
Total compensation cost, weighted average service period	'	'	'	'4 months	'	'
Options outstanding to purchase shares with exercise price below company stock price	12.3	'	'	12.3	'	'
Options outstanding to purchase shares with exercise price below company stock price, intrinsic value	610,000,000	'	'	610,000,000	'	'
Aggregate intrinsic value of options exercised under the Company's stock option plan	80,000,000	'	25,000,000	107,000,000	79,000,000	'
Grant-date fair value of the shares underlying the restricted stock awards	4,000,000	'	'	92,000,000	'	'
Forfeiture rate of restricted stock unit valuation assumption	3.50%	'	'	3.30%	'	'
Stock Appreciation Right outstanding, weighted average exercise price	$7.92	'	'	$7.92	'	'
Number of assumed SARs outstanding	1	'	'	1	'	'
Weighted average expected term of the Company's stock options	'5 years 5 months	'	'4 years 2 months	'5 years	'4 years	'
StockRepurchaseProgramAdditionalAmountAuthorized	'	'	'	'	'	3,000,000,000
Treasury Stock, Shares, Acquired	2	'	'	4.3	'	'
Treasury Stock, Value, Acquired, Cost Method	150,000,000	'	'	300,000,000	'	'
RemainingAmountForRepurchaseUnderShareRepurchaseProgram	1,700,000,000	'	'	1,700,000,000	'	'
Cash dividend	$0.30	$0.25	'	'	'	'
Dividends, Common Stock, Cash	71,000,000	'	'	'	'	'
Payment of dividends	$59,000,000	'	'	$118,000,000	$121,000,000	'

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Option Activity (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 27, 2013	Sep. 27, 2013
Stock Option Activity [Abstract]	'	'
Options outstanding, Beginning Balance, Numbers of Shares	13.1	11.9
Granted, Number of Shares	'	1.6
Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Period	1.3	0.4
Exercised, Number of Shares	-1.6	-0.7
Options Canceled or Expired In Period	-0.3	-0.1
Options outstanding, Ending Balance, Numbers of Shares	12.5	13.1
Exercisable at December 27, 2013	4.8	'
Vested and expected to vest after December 27, 2013	12.3	'
Options outstanding, Beginning Balance, Weighted Average Exercise Price Per Share	$36.77	$29.47
Granted, Weighted Average Exercise Price Per Share	'	$68.40
Share Based Compensation Options Assumed Weighted Average Exercise Price	$12.32	$117.41
Exercised, Weighted Average Exercise Price Per Share	$25.34	$30.14
Canceled or expired, Weighted Average Exercise Price Per Share	$76.28	$29.93
Options outstanding, Ending Balance, Weighted Average Exercise Price Per Share	$34.99	$36.77
Exercisable at December 27, 2013, Weighted Average Exercise Price Per Share	$32.45	'
Vested and expected to vest after December 27, 2013, Weighted Average Exercise Price Per Share	$34.79	'
Options outstanding at December 27, 2013, Weighted Average Remaining Contractual Life (in years)	'4 years 9 months	'
Exercisable at December 27, 2013, Weighted Average Remaining Contractual Life (in years)	'3 years 2 months	'
Vested and expected to vest after December 27, 2013, Weighted Average Remaining Contractual Life (in years)	'4 years 9 months	'
Options outstanding at December 27, 2013, Aggregate Intrinsic Value	$610	'
Exercisable at December 27, 2013, Aggregate Intrinsic Value	253	'
Vested and expected to vest after December 27, 2013, Aggregate Intrinsic Value	$602	'

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Units (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 27, 2013	Sep. 27, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Numbers of Shares, Beginning Balance	4.2	3.6
Restricted stock, Number of share granted	0.1	1.3
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Assumed in Period	'	0.2
Restricted stock, Number of share vested	-0.2	-0.9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	-0.1	'
Numbers of Shares, Ending Balance	4	4.2
Number of share, Expected to vest after December 27, 2013	3.8	'
Restricted Stock Units (RSUs) [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Grant Date Fair Value Per Share, Beginning Balance	48.39	35.82
Restricted stock, Granted, Weighted Average Grant Date Fair Value Per Share	74.54	68.41
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Assumed in Period Weighted Average Grant Date Fair Value	'	62.73
Restricted stock, Vested, Weighted Average Grant Date Fair Value Per Share	42.86	29.73
Share Based Compensation Arrangement By Share Based Payment Awards Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value	46.19	'
Weighted Average Grant Date Fair Value Per Share, Ending Balance	49.1	48.39
Weighted Average Grant Date Fair Value Per Share, Expected to vest after December 27, 2013	48.86	'

StockBased_Compensation_Fair_V

Stock-Based Compensation - Fair Value of Stock Options Granted (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013	Dec. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]	'	'	'	'
Suboptimal exercise factor	2.2	1.92	2.06	1.9
Risk-free interest rates, minimum	0.12%	0.16%	0.10%	0.16%
Risk-free interest rates, maximum	2.44%	1.18%	2.44%	1.18%
Expected stock price volatility, minimum	0.29%	0.42%	0.29%	0.42%
Expected stock price volatility, maximum	0.49%	0.52%	0.50%	0.53%
Weighted average expected volatility	0.41%	0.47%	0.43%	0.49%
Post-vesting termination rate	3.18%	2.41%	3.09%	2.09%
Dividend yield	1.45%	2.41%	1.58%	2.58%
Fair value	$25.29	$13.08	$24.03	$15.56

Pensions_and_Other_Postretirem2

Pensions and Other Post-retirement Benefit Plans - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Jun. 27, 2014
		Japan pension benefits [Member]
Defined Benefit Plan Disclosure [Line Items]	'	'
Expected long-term rate of return on plan assets	3.50%	'
Expected contribution for pension plan	'	$13

Pensions_and_Other_Postretirem3

Pensions and Other Post-retirement Benefit Plans - Unfunded Status of Benefit Obligations and Plan Assets (Detail) (Japan pension benefits [Member], USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Japan pension benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Benefit obligation	$234	$234
Fair value of plan assets	-172	-167
Unfunded status	$62	$67

Pensions_and_Other_Postretirem4

Pensions and Other Post-retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheet (Detail) (Japan pension benefits [Member], USD $)	Dec. 27, 2013	Jun. 28, 2013
In Millions, unless otherwise specified
Japan pension benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Current liabilities	$1	$1
Non-current liabilities	61	66
Net amount recognized	$62	$67

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2013	Jun. 28, 2013	Oct. 17, 2013	Sep. 12, 2013
			Virident [Member]	sTec [Member]
Business Acquisition [Line Items]	'	'	'	'
Business Combination, Consideration Transferred	'	'	$613	$336
Business Acquisition, Cost of Acquired Entity, Cash Paid	'	'	598	325
Fair Value Of Stock Options Assumed	'	'	15	'
Fair Value Of Stock Options And Restricted Stock Based Awards\Assumed	'	'	'	11
Value allocated to goodwill	$2,555	$1,954	$505	$85
Period of measurement	'12 months	'	'	'

Acquisitions_sTec_Purchase_Pri

Acquisitions sTec Purchase Price Allocation (Details) (USD $)	Dec. 27, 2013	Jun. 28, 2013	Sep. 12, 2013
In Millions, unless otherwise specified			sTec [Member]
Business Acquisition [Line Items]	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	'	'	$193
Intangible assets	'	'	58
Goodwill	2,555	1,954	85
Total	'	'	$336

Acquisitions_Virident_purchase

Acquisitions Virident purchase price allocation (Details) (USD $)	Dec. 27, 2013	Jun. 28, 2013	Oct. 17, 2013
In Millions, unless otherwise specified			Virident [Member]
Business Acquisition [Line Items]	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	'	'	$59
Intangible assets	'	'	49
Goodwill	2,555	1,954	505
Total	'	'	$613

Employee_Termination_Benefits_1

Employee Termination Benefits and Other Charges - Additional Information (Detail) (USD $)	12 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 28, 2013	Dec. 27, 2013	Dec. 27, 2013	Dec. 27, 2013
			Contract Termination [Member]	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	'	'	'

Subsequent_Event_Details

Subsequent Event (Details) (USD $)	Jan. 31, 2014	Jan. 09, 2014	Dec. 27, 2013	Jun. 28, 2013
Line of Credit Facility [Line Items]	'	'	'	'
Long-term Debt	'	$1,800,000,000	$1,800,000,000	'
Unsecured Loan Under Credit Facility	'	4,000,000,000	2,800,000,000	'
Line Of Credit Facility Amount Available To Borrow	'	1,500,000,000	500,000,000	'
Sublimit for Letters of Credit Under Revolving Credit Facility	'	100,000,000	'	'
Sublimit for Swing Line Loans Under Revolving Credit Facility	'	50,000,000	'	'
Credit Facility Additional Borrowing Capacity	'	1,000,000,000	'	'
Loan Period	'	'5 years	'	'
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	'	63,000,000	'	'
Long-term Debt, Maturities, Repayments of Principal in Year Two	'	125,000,000	'	'
Long-term Debt, Maturities, Repayments of Principal in Year Three	'	156,000,000	'	'
Long-term Debt, Maturities, Repayments of Principal in Year Four	'	219,000,000	'	'
Long-term Debt, Maturities, Repayments of Principal in Year Five	'	250,000,000	'	'
Long-term Debt, Maturities, Repayments of Principal after Year Five	'	1,700,000,000	'	'
Debt, Long-term and Short-term, Combined Amount	2,500,000,000	'	2,300,000,000	'
Short-term Debt	'	500,000,000	500,000,000	0
Term Loan [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Unsecured Loan Under Credit Facility	'	$2,500,000,000	$2,300,000,000	'