Western Digital (WDC) 10-Q 10 Feb 15 2015 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jan. 02, 2015	Feb. 05, 2015
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	2-Jan-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Trading Symbol	WDC
Entity Registrant Name	WESTERN DIGITAL CORP
Entity Central Index Key	106040
Current Fiscal Year End Date	4
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		231,031,533

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$4,902	$4,804
Short-term investments	241	284
Accounts receivable, net	1,880	1,989
Inventories	1,282	1,226
Other current assets	355	417
Total current assets	8,660	8,720
Property, plant and equipment, net	3,099	3,293
Goodwill	2,566	2,559
Other intangible assets, net	359	454
Other non-current assets	455	473
Total assets	15,139	15,499
Current liabilities:
Accounts payable	2,071	1,971
Accrued arbitration award	0	758
Accrued expenses	496	412
Accrued compensation	451	460
Accrued warranty	146	119
Current portion of long-term debt	125	125
Total current liabilities	3,289	3,845
Long-term debt	2,250	2,313
Other liabilities	518	499
Total liabilities	6,057	6,657
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 - 232 and 234 shares, respectively	3	3
Additional paid-in capital	2,318	2,331
Accumulated other comprehensive income (loss)	-32	12
Retained earnings	8,738	8,066
Treasury stock - common shares at cost; 29 and 27 shares, respectively	-1,945	-1,570
Total shareholders' equity	9,082	8,842
Total liabilities and shareholders' equity	$15,139	$15,499

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jan. 02, 2015	Jun. 27, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value	$0.01	$0.01
Preferred stock, authorized	5,000,000	5,000,000
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	232,000,000	234,000,000
Treasury stock, shares	29,000,000	27,000,000

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Income Statement [Abstract]
Revenue, net	$3,888	$3,972	$7,831	$7,776
Cost of revenue	2,778	2,816	5,572	5,521
Gross margin	1,110	1,156	2,259	2,255
Operating expenses:
Research and development	426	416	863	817
Selling, general and administrative	164	226	384	358
Charges related to arbitration award	1	13	15	26
Employee termination, asset impairment and other charges	53	23	62	34
Total operating expenses	644	678	1,324	1,235
Operating income	466	478	935	1,020
Other income (expense):
Interest and other income	4	3	8	6
Interest and other expense	-12	-14	-25	-27
Total other expense, net	-8	-11	-17	-21
Income before income taxes	458	467	918	999
Income tax provision	20	37	57	74
Net income	$438	$430	$861	$925
Income per common share:
Basic	$1.88	$1.82	$3.70	$3.92
Diluted	$1.84	$1.77	$3.60	$3.81
Weighted average shares outstanding:
Basic	233	236	233	236
Diluted	238	243	239	243

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Statement of Comprehensive Income [Abstract]
Net income	$438	$430	$861	$925
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on cash flow hedges	-18	-30	-44	-14
Other comprehensive income (loss)	-18	-30	-44	-14
Total comprehensive income	$420	$400	$817	$911

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Dec. 27, 2013
Cash flows from operating activities
Net income	$861	$925
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	579	629
Stock-based compensation	80	84
Deferred income taxes	31	-39
Gain from insurance recovery	-37	-65
Loss on disposal of assets	12	29
Non-cash portion of employee termination benefits, asset impairment and other charges	19	9
Changes in:
Accounts receivable, net	109	-145
Inventories	-56	-66
Accounts payable	94	86
Accrued arbitration award	-758	26
Accrued expenses	70	-36
Accrued compensation	-9	3
Other assets and liabilities	75	-34
Net cash provided by operating activities	1,070	1,406
Cash flows from investing activities
Purchases of property, plant and equipment	-306	-306
Proceeds from Sale of Property, Plant, and Equipment	7	0
Proceeds from Sale and Maturity of Other Investments	630	0
Purchases of investments	-595	0
Acquisitions, net of cash acquired	-6	-823
Payments for (Proceeds from) Other Investing Activities	16	4
Net cash used in investing activities	-254	-1,125
Cash flows from financing activities
Issuance of stock under employee stock plans	112	97
Taxes paid on vested stock awards under employee stock plans	-59	-24
Excess tax benefits from employee stock plans	11	25
Repurchases of common stock	-532	-300
Dividends to shareholders	-187	-118
Proceeds from Debt, Net of Issuance Costs	0	500
Repayment of debt	-63	-115
Net cash provided by (used in) financing activities	-718	65
Net increase (decrease) in cash and cash equivalents	98	346
Cash and cash equivalents, beginning of period	4,804	4,309
Cash and cash equivalents, end of period	4,902	4,655
Supplemental disclosure of cash flow information:
Cash paid (received) for income taxes	-45	122
Cash paid for interest	23	24
Supplemental disclosure of non-cash financing activities:
Accrual of cash dividend declared	$93	$71

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jan. 02, 2015
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 27, 2014. 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 27, 2014. The results of operations for interim periods are not necessarily indicative of results to be expected for the full year. The Company's fiscal year ends on the Friday nearest to June 30 and typically consists of 52 weeks. Approximately every six years, the Company reports a 53-week fiscal year to align its fiscal year with the foregoing policy. The Company's fiscal second quarters ended January 2, 2015 and December 27, 2013 both consisted of 13 weeks. Fiscal year 2015 will be comprised of 53 weeks and will end on July 3, 2015.
	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
	Jan. 02, 2015
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
		January 2,			June 27,
		2015			2014
		(in millions)
	Inventories:
	Raw materials and component parts	$	154		$	168
	Work-in-process	510			493
	Finished goods	618			565
	Total inventories	$	1,282		$	1,226
	Property, plant and equipment:
	Property, plant and equipment	$	8,353		$	8,123
	Accumulated depreciation	(5,254		)	(4,830		)
	Property, plant and equipment, net	$	3,099		$	3,293
	Other intangible assets:
	Other intangible assets	$	983		$	984
	Accumulated amortization	(624		)	(530		)
	Other intangible assets, net	$	359		$	454
	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 Ended						Six Months Ended
		January 2,			December 27,			January 2,			December 27, 2013
		2015			2013			2015
	Warranty accrual, beginning of period	$	201		$	195		$	182		$	187
	Warranty liability assumed as a result of acquisition	—			1			—			4
	Charges to operations	50			44			99			84
	Utilization	(44		)	(57		)	(93		)	(106		)
	Changes in estimate related to pre-existing warranties	16			7			35			21
	Warranty accrual, end of period	$	223		$	190		$	223		$	190
	The long-term portion of the warranty accrual classified in other liabilities was $77 million as of January 2, 2015 and $63 million as of June 27, 2014.
	Investments
	The following table summarizes, by major type, the fair value and cost basis of the Company’s investments as of January 2, 2015 (in millions):
		Cost Basis			Unrealized Gains (Losses)			Fair Value
	Available-for-sale securities:
	U.S. Treasury securities	$	159		$	—		$	159
	U.S. Government agency securities	126			—			126
	Commercial paper	154			—			154
	Certificates of deposit	26			—			26
	Total	$	465		$	—		$	465
	Short-term investments							$	241
	Included in other non-current assets							224
	Total							$	465
	The fair value of the Company’s investments classified as available-for-sale securities at January 2, 2015, by remaining contractual maturity, were as follows (in millions):
		Cost Basis			Fair Value
	Due in less than one year:	$	241		$	241
	Due in one to five years:	224			224
	Total	$	465		$	465
	The following table summarizes, by major type, the fair value and cost basis of the Company’s investments as of June 27, 2014 (in millions):
		Cost Basis			Unrealized Gains (Losses)			Fair Value
	Available-for-sale securities:
	U.S. Treasury securities	$	180		$	—		$	180
	U.S. Government agency securities	88			—			88
	Commercial paper	165			—			165
	Certificates of deposit	66			—			66
	Total	$	499		$	—		$	499
	Short-term investments							$	284
	Included in other non-current assets							215
	Total							$	499
	The fair value of the Company’s investments classified as available-for-sale securities as of June 27, 2014, by remaining contractual maturity, were as follows (in millions):
		Cost Basis			Fair Value
	Due in less than one year:	$	284		$	284
	Due in one to five years:	215			215
	Total	$	499		$	499
	The Company determined no available-for-sale securities were other-than-temporarily impaired in the three and six months ended January 2, 2015. For more information on the Company's available-for-sale securities, see Note 7 below.
In addition, the Company enters into certain strategic investments for the promotion of business and strategic objectives. These strategic investments are recorded at cost within other non-current assets in the consolidated balance sheets and were not material to the condensed consolidated financial statements as of January 2, 2015 and June 27, 2014.
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. There were no unrealized gains or losses on the Company's available-for-sale securities or actuarial gains and losses related to pensions in the six months ended January 2, 2015. In addition, the income tax impact on components of other comprehensive income (loss) is immaterial for all periods presented.
The following table illustrates the changes in the balances of each component of accumulated other comprehensive income (loss) for the six months ended January 2, 2015 (in millions):
	Actuarial Pension Gain			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
Balance at June 27, 2014	$	7		$	5		$	12
Other comprehensive income (loss) before reclassifications	—			(57		)	(57		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			13			13
Net current-period other comprehensive income (loss)	—			(44		)	(44		)
Balance at January 2, 2015	$	7		$	(39	)	$	(32	)
The following table illustrates the changes in the balances of each component of accumulated other comprehensive income (loss) for the six months ended December 27, 2013 (in millions):
	Actuarial Pension Gain			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
Balance at June 28, 2013	$	11		$	(46	)	$	(35	)
Other comprehensive income (loss) before reclassifications	—			(11		)	(11		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			(3		)	(3		)
Net current-period other comprehensive income (loss)	—			(14		)	(14		)
Balance at December 27, 2013	$	11		$	(60	)	$	(49	)

Income_per_Common_Share

Income per Common Share	6 Months Ended
	Jan. 02, 2015
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
		January 2,		December 27,		January 2,		December 27,
		2015		2013		2015		2013
	Net income	$	438	$	430	$	861	$	925
	Weighted average shares outstanding:
	Basic	233		236		233		236
	Employee stock options and other	5		7		6		7
	Diluted	238		243		239		243
	Income per common share:
	Basic	$	1.88	$	1.82	$	3.7	$	3.92
	Diluted	$	1.84	$	1.77	$	3.6	$	3.81
	Anti-dilutive potential common shares excluded*	1		2		2		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

Debt	6 Months Ended
	Jan. 02, 2015
Debt Disclosure [Abstract]
Debt	4. Debt
	On January 9, 2014, Western Digital Ireland, Ltd. (“WDI”) used existing cash to repay the outstanding term loan balance of $1.8 billion under its previous credit agreement, dated March 8, 2012, and the Company, Western Digital Technologies, Inc. (“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"). 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 the Company and its material domestic subsidiaries, and the obligations of WDI under the Credit Agreement are also guaranteed by WDT.
	As of January 2, 2015, no amounts were outstanding under the revolving credit facility and the term loan facility had an outstanding balance of $2.4 billion and a variable interest rate of 1.66%. The Company is required to make quarterly principal payments on the term loan facility totaling $63 million for the remainder of 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 January 2, 2015, the Company was in compliance with all covenants.

Legal_Proceedings

Legal Proceedings	6 Months Ended
	Jan. 02, 2015
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 note, “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, for which the Company previously recorded an accrual. WD and HGST have filed post-trial motions challenging the verdict. On January 17, 2014, the Court denied the Company’s motion for judgment as a matter of law on invalidity. On May 20, 2014, the Court ordered supplemental briefing on post-trial motions related to infringement. Convolve and the Company filed their supplemental briefs on May 30, 2014 and June 6, 2014, respectively. Additional post-trial motions are pending, and the Company will evaluate its options for appeal after the Court rules on the remaining post-trial motions. The Company 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. Guzik is disputing the enforceability of the agreement and on December 27, 2013, WD filed a motion to enforce the agreement. The Court heard oral argument on WD’s motion on January 23, 2014. The Court granted WD’s motion to enforce the settlement agreement on March 21, 2014. On April 14, 2014, Guzik filed a Notice of Appeal to the Federal Circuit. On June 17, 2014, Guzik filed its opening appellate brief. WD filed its appellate brief on August 14, 2014. On September 11, 2014, Guzik filed its reply brief in support of its opening appellate brief. On January 7, 2015, the Federal Circuit heard oral argument on Guzik’ s appeal and on January 9, 2015, the Federal Circuit affirmed the Court’s decision granting WD’s motion to enforce the settlement agreement. WD intends to continue to defend itself vigorously in this matter.
	On March 24, 2014, plaintiff Steven F. Reiber (“Reiber”) filed a complaint in the Eastern District of California against the Company, alleging infringement of U.S. Patent Nos. 7,124,927 and 7,389,905. On September 16, 2014, Reiber filed an amended complaint in the Eastern District of California against the Company alleging infringement of three additional patents-U.S. Patent Nos. 6,935,548, 6,651,864, and 6,354,479. Reiber alleges that WD products (including hard disk drive heads, head gimbal assemblies, head stack assemblies and SSDs) infringe these patents based on the allegation that the manufacturing of these products involves the use of certain bonding tools (e.g., wire-bonding tips, capillary tips, and flip-chip handling tools) that have electrically “dissipative” properties, and which are used when bonding components, such as leads, wires and flip chips. The complaint seeks an injunction, unspecified monetary damages, interests, fees and costs. On September 30, 2014, the Company filed a motion to dismiss Reiber’s claims for induced infringement and contributory infringement. Oral argument on the Company’s motion to dismiss occurred on January 16, 2015. The parties' initial case management conference is set for April 16, 2015. The Company intends to defend itself vigorously in this matter.
	On October 20, 2014, plaintiff SOTA Semiconductor LLC (“SOTA”) filed a complaint in the Central District of California against the Company, Marvell Semiconductor, Inc., Belkin International, Inc., Dell Inc., Hewlett-Packard Company, Hisense USA Corp., Konica Minolta Business Solutions U.S.A., Inc., Lenovo (United States) Inc., Netgear, Inc., Samsung Electronics America, Inc., and Seagate Technology LLC, alleging infringement of U.S. Patent No. 5,991,545 (“’545 patent”). SOTA alleges that the Company’s devices that incorporate Marvell Thumb Processors, including WD’s My Cloud EX2 network attached storage devices, which include model numbers WDBVKW0080JCH, WDBVKW0060JCH, WDBVKW0040JCH and WDBVKW0000NCH, infringe the ’545 patent. The complaint seeks unspecified monetary damages, interests, fees, costs and expenses. On December 12, 2014, the Company filed an answer and counterclaims to SOTA’s complaint. The Company intends to defend itself vigorously in this matter.
	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 misappropriation of trade secrets and sought injunctive relief and unspecified monetary damages, interest, fees and costs. On June 19, 2007, WD’s former employee filed a demand for arbitration with the American Arbitration Association.
	On January 23, 2012, the arbitrator issued a total final award, including pre-award interest 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, and, on October 12, 2012, the District Court of Hennepin County, Minnesota vacated, in full, the $630.4 million final arbitration award, ordering that a rehearing be held concerning the alleged trade secret claims before a new arbitrator.
	Seagate appealed the District Court decision to 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. On August 20, 2013, the Company filed a petition for review with the Minnesota Supreme Court and, on October 15, 2013, the Minnesota Supreme Court granted the Company’s petition. On October 8, 2014, the Minnesota Supreme Court affirmed the decision of the Minnesota Court of Appeals. Because the Minnesota Supreme Court’s decision is not subject to appeal, on October 14, 2014, the Company paid Seagate $773.4 million to satisfy the full amount of the final arbitration award plus interest accrued through October 13, 2014. This amount was paid during the quarter ended January 2, 2015 by one of the Company’s foreign subsidiaries using cash held outside of the United States.
	Seagate disputes the method the Company used for calculating post-award interest and contends that the Company owes Seagate approximately $28.9 million in additional interest. The Company denies Seagate’s contention and believes it calculated interest properly in accordance with the arbitration award. On November 12, 2014, the Company filed a motion with the District Court seeking an order declaring that WD has paid to Seagate all amounts due under the arbitration award, including all pre-award and post-award interest, and all costs and disbursements assessed by the Minnesota Court of Appeals and the Minnesota Supreme Court. On December 23, 2014, Seagate filed a cross-motion seeking entry of judgment in the amount of $28.9 million, plus daily interest from October 15, 2014 until the date any judgment is paid. Both parties’ motions were fully briefed and, on January 9, 2015, the Court heard oral argument on both motions. The Court has not yet ruled on the matter.
	Other Matters
	On December 22, 2011, the German Central Organization for Private Copying Rights (Zentralstelle für private Überspielungsrechte), (“ZPÜ”), an organization consisting of several levy collecting societies, instituted arbitration proceedings against Western Digital's German subsidiary ("WD Germany") before to the Copyright Arbitration Board (“CAB”) claiming copyright levies for multimedia hard drives, external hard drives and network hard drives sold or introduced into commerce in Germany from January 2008 through December 2010.  The CAB, which was required to issue a settlement proposal within one year of the initiation of the action, failed to do so and requested the parties consent to continue the deadline.  WD Germany declined to provide consent and, on February 1, 2013, WD Germany filed a declaratory relief action against ZPÜ in the Higher Regional Court of Munich (the “Higher Court”), seeking an order from the court to determine the copyright levy issue.  On May 21, 2013, ZPÜ filed a counter-claim against WD Germany with the Higher Court, seeking copyright levies for multimedia hard drives, external hard drives and network hard drives (collectively, "Covered Products") sold or introduced into commerce from January 2008 through December 2010 based on tariffs published by ZPÜ on November 3, 2011. On May 22, 2014, oral argument on the pleadings occurred.  On January 15, 2015, the Higher Court ruled in favor of ZPÜ. In its ruling, the Higher Court declared that WD Germany must pay certain levies on certain WD products which it sold in Germany between January 1, 2008 and December 31, 2010. The judgment specifies levy amounts on certain WD products sold from 2008 to 2010 and directs WD Germany to provide applicable sales data to the ZPÜ. The exact amount of the judgment has not been determined. WD Germany intends to appeal this decision to the German Federal Court of Justice and defend itself vigorously in this matter.
	On December 11, 2014, ZPÜ submitted a pleading to the CAB seeking copyright levies for Covered Products sold by WD or introduced into commerce in Germany from January 1, 2012 to December 31, 2013. WD Germany intends to defend itself vigorously in this matter.
	In the three months ended January 2, 2015, the Company recorded an accrual for German copyright levies in an amount that is not material to the Company’s financial position, results of operations or cash flows.  It is reasonably possible that the Company may incur losses totaling up to $90 million, including the amount accrued.
	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
	Jan. 02, 2015
Income Tax Disclosure [Abstract]
Income Taxes	6. Income Taxes
	The Company’s income tax provision for the three and six months ended January 2, 2015 was $20 million and $57 million, respectively, as compared to $37 million and $74 million in the respective prior-year periods. The Company's tax provision for both the three and six months ended January 2, 2015 reflects a tax benefit of $16 million as a result of the retroactive extension of the U.S. Federal R&D tax credit that was signed into law on December 19, 2014. 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 2015 through 2025 and the current year generation of income tax credits.
	In the three months ended January 2, 2015, the Company recorded a net increase of $9 million in its liability for unrecognized tax benefits. In the six months ended January 2, 2015, the Company recorded a net increase of $16 million in its liability for unrecognized tax benefits. As of January 2, 2015, the Company's liability for unrecognized tax benefits was approximately $316 million. Interest and penalties recognized on such amounts were not material to the condensed consolidated financial statements during the three months and six months ended January 2, 2015.
	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 the Company and the IRS reached agreement with respect to all matters except on the proposed adjustments to income before income taxes relating to intercompany payable balances. The proposed adjustments 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.  The Company anticipates that the IRS fieldwork will be completed in the fourth quarter of fiscal year 2015.  With respect to the 2008 and 2009 audit, the Company received a notice of proposed adjustment from the IRS relating to intercompany payable balances. The proposed adjustments to income before income taxes relating to intercompany payable balances for fiscal years 2006, 2007, 2008 and 2009 total approximately $200 million. The Company disagrees with the proposed adjustments, believes that its tax position is properly supported and will vigorously contest the position taken by the IRS. The IRS examined calendar years 2010 and 2011 of HGST, which was acquired by the Company on March 8, 2012, and completed the examination with no material adjustments.
	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 January 2, 2015, it was 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
	Jan. 02, 2015
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 January 2, 2015, 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	$	1,677	$	—	$	—	$	1,677
	U.S. Government agency securities	—		15		—		15
	Commercial paper	—		20		—		20
	Total cash equivalents	1,677		35		—		1,712
	Short-term investments:
	U.S. Government agency securities	—		61		—		61
	Commercial paper	—		154		—		154
	Certificates of deposit	—		26		—		26
	Total short-term investments	—		241		—		241
	Long-term investments:
	U.S. Treasury securities	—		159		—		159
	U.S. Government agency securities	—		65		—		65
	Total long-term investments	—		224		—		224
	Total assets at fair value	$	1,677	$	500	$	—	$	2,177
	Liabilities:
	Foreign exchange contracts	$	—	$	45	$	—	$	45
	Total liabilities at fair value	$	—	$	45	$	—	$	45
	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 27, 2014, 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	$	756	$	—	$	—	$	756
	Bank acceptances	—		1		—		1
	Total cash equivalents	756		1		—		757
	Short-term investments:
	U.S. Government agency securities	—		53		—		53
	Commercial paper	—		165		—		165
	Certificates of deposit	—		66		—		66
	Total short-term investments	—		284		—		284
	Long-term investments:
	U.S. Treasury securities	—		180		—		180
	U.S. Government agency securities	—		35		—		35
	Total long-term investments	—		215		—		215
	Foreign exchange contracts	—		7		—		7
	Total assets at fair value	$	756	$	507	$	—	$	1,263
	Liabilities:
	Foreign exchange contracts	$	—	$	2	$	—	$	2
	Total liabilities at fair value	$	—	$	2	$	—	$	2
	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.
	Certificates of Deposit. The Company’s certificates of deposit are investments which are held in custody by a third party and recorded within short-term investments in the condensed consolidated balance sheets. Certificates of deposit are valued using fixed interest rates.
	Commercial Paper. The Company’s commercial paper securities are investment grade debt issued by corporations which are held in custody by a third party with original maturities of twelve months or less and are recorded within cash and cash equivalents or short-term investments in the condensed consolidated balance sheets depending on their original maturities. Commercial paper securities are valued using a market approach which is based on observable inputs including market interest rates from multiple pricing sources.
	U.S. Government Agency Securities. The Company’s U.S. Government agency securities are investments in fixed income securities sponsored by the U.S. Government and are held in custody by a third party and recorded within cash and cash equivalents, short-term investments or other non-current assets in the condensed consolidated balance sheets depending on their original maturities. U.S. Government agency securities are valued using a market approach which is based on observable inputs including market interest rates from multiple pricing sources.
	U.S. Treasury Securities. The Company’s U.S. Treasury securities are direct obligations of the U.S. federal government, are held in custody by a third party and are recorded within other non-current assets in the condensed consolidated balance sheets. U.S. Treasury securities are valued using a market approach which is based on observable inputs including market interest rates from multiple pricing sources.
	Bank Acceptances. The Company’s bank acceptances are held in custody by a third party and recorded within cash and cash equivalents in the condensed consolidated balance sheets. Bank acceptances are valued using a market approach which is based on observable inputs including market interest rates from multiple pricing sources.
	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. 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.
	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
	Jan. 02, 2015
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 January 2, 2015, 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. 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 and presented within cash flow from operations. 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 January 2, 2015 and December 27, 2013.
	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 as of January 2, 2015 and June 27, 2014. The changes in fair value on these contracts were immaterial to the condensed consolidated financial statements during the three and six months ended January 2, 2015 and December 27, 2013.
	As of January 2, 2015, 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 $39 million. In addition, as of January 2, 2015, the Company did not have any foreign exchange contracts with credit-risk-related contingent features. The Company opened $1.0 billion and $2.0 billion, and closed $1.1 billion and $2.1 billion, in foreign exchange contracts in the three and six months ended January 2, 2015, respectively. In addition, 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 fair value and balance sheet location of the Company's foreign exchange contracts as of January 2, 2015 and June 27, 2014 were as follows (in millions):
		Asset Derivatives						Liability Derivatives
		January 2, 2015			June 27, 2014			January 2, 2015			June 27, 2014
	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	$	7	Accrued expenses	$	45	Accrued expenses	$	2
	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 January 2, 2015 (in millions):
	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
	Hedging Instruments
	Foreign exchange contracts
	Financial assets	$	1		$	(1	)	$	—
	Financial liabilities	(46		)	1			(45		)
	Total derivative instruments	$	(45	)	$	—		$	(45	)
	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 27, 2014 (in millions):
	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
	Hedging Instruments
	Foreign exchange contracts
	Financial assets	$	9		$	(2	)	$	7
	Financial liabilities	(4		)	2			(2		)
	Total derivative instruments	$	5		$	—		$	5
	The impact on the condensed consolidated financial statements was as follows (in millions):
		Amount of Loss Recognized in												Location of	Amount of (Gain) Loss Reclassified
		Accumulated OCI on Derivatives												(Gain) Loss	From Accumulated OCI into Income
														Reclassified
														from
														Accumulated
	Derivatives in Cash	Three			Six Months Ended			Three			Six Months Ended			OCI into	Three			Six Months Ended			Three		Six Months Ended
	Flow Hedging Relationships	Months						Months						Income	Months						Months
		Ended						Ended							Ended						Ended
		January 2,						December 27,							January 2,						December 27,
		2015						2013							2015						2013
	Foreign exchange contracts	$	(35	)	$	(57	)	$	—		$	(11	)	Cost of revenue	$	(17	)	$	(13	)	$	30	$	3
	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 January 2, 2015 and December 27, 2013.

StockBased_Compensation

Stock-Based Compensation	6 Months Ended
	Jan. 02, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	9. Stock-Based Compensation
	Stock-Based Compensation Expense
	During the three and six months ended January 2, 2015, the Company recognized in expense $18 million and $37 million, respectively, for stock-based compensation related to the vesting of options issued under the Company’s stock plans and the ESPP, as compared to $24 million and $45 million in the respective prior-year periods. The tax benefit realized as a result of the aforementioned stock-based compensation expense was $7 million and $12 million in the three and six months ended January 2, 2015, respectively, as compared to $6 million and $11 million in the three and six months ended December 27, 2013, respectively. As of January 2, 2015, total compensation cost related to unvested stock options and ESPP rights issued to employees but not yet recognized was $129 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 January 2, 2015, the Company recognized in expense $23 million and $43 million, respectively, for stock-based compensation related to the vesting of awards of RSUs issued under the Company's stock plans, as compared to $18 million and $39 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 January 2, 2015, respectively, as compared to $5 million and $9 million in the three and six months ended December 27, 2013, respectively. As of January 2, 2015, the aggregate unamortized fair value of all unvested RSUs was $157 million, which will be recognized on a straight-line basis over a weighted average vesting period of approximately 1.7 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 January 2, 2015 and December 27, 2013.
	During the three and six months ended January 2, 2015, the Company recognized in expense $8 million and $12 million, respectively, related to adjustments to market value as well as the vesting of stock appreciation rights (“SARs”), as compared to $20 million and $24 million in the respective prior-year periods. The tax benefit realized as a result of the aforementioned SARs expense was $2 million and $3 million in the three and six months ended January 2, 2015, respectively, as compared to $4 million and $5 million in the three and six months ended December 27, 2013, respectively. The SARs will be settled in cash upon exercise. As a result, the Company had a total liability of $63 million related to SARs included in accrued expenses in the condensed consolidated balance sheet as of January 2, 2015. As of January 2, 2015, total compensation cost related to unvested SARs issued to employees but not yet recognized was not material to the Company's consolidated statement of income.
	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 27, 2014	10.1			$	37.03
	Granted	1.2			100.06
	Exercised	(1.3	)		31.04
	Options outstanding at October 3, 2014	10			45.16
	Exercised	(1.1	)		32.14
	Canceled or expired	(0.1	)		32.53
	Options outstanding at January 2, 2015	8.8			$	47.01		4.4	$	564
	Exercisable at January 2, 2015	4			$	32.98		3.1	$	314
	Vested and expected to vest after January 2, 2015	8.6			$	46.41		4.4	$	558
	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 January 2, 2015, the Company had options outstanding to purchase an aggregate of 8.8 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 $564 million at that date. During the three and six months ended January 2, 2015, the aggregate intrinsic value of options exercised under the Company’s stock option plans was $76 million and $163 million, respectively, determined as of the date of exercise, as compared to $80 million and $107 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 27, 2014	3.7			$	49.77
	Granted	1.1			100.07
	Vested	(1.5	)		40.57
	RSUs outstanding at October 3, 2014	3.3			70.88
	Granted*	—			101.27
	Vested	(0.1	)		48.25
	RSUs outstanding at January 2, 2015	3.2			72.15
	Expected to vest after January 2, 2015	3			$	71.69
	*	Shares granted were immaterial for rounding purposes.
	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 $3 million and $116 million in the three and six months ended January 2, 2015, respectively. These amounts are being recognized to expense over the corresponding vesting periods. The Company has assumed a forfeiture rate of 4.3% and 4.4% for the three and six months ended January 2, 2015, 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 January 2, 2015, 0.6 million SARs were outstanding with a weighted average exercise price of $8.11. 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 January 2, 2015.
	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
		January 2,		December 27,		January 2,	December 27,
		2015		2013		2015	2013
	Suboptimal exercise factor	2.59		2.2		2.51	2.06
	Range of risk-free interest rates	0.25% to 1.92%		0.12% to 2.44%		0.11% to 2.16%	0.10% to 2.44%
	Range of expected stock price volatility	0.23 to 0.46		0.29 to 0.49		0.23 to 0.47	0.29 to 0.50
	Weighted average expected volatility	0.35		0.41		0.36	0.43
	Post-vesting termination rate	1.69%		3.18%		1.25%	3.09%
	Dividend yield	1.45%		1.45%		1.68%	1.58%
	Fair value	$31.96		$25.29		$32.29	$24.03
	The weighted average expected term of the Company’s stock options granted during the three and six months ended January 2, 2015 was 6.0 years and 5.8 years, respectively, compared to 5.4 years and 5.0 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 1 or December 1 of each year. ESPP activity was immaterial to the condensed consolidated financial statements for the three and six months ended January 2, 2015 and December 27, 2013.
	Stock Repurchase Program
	Since May 21, 2012, the Company's Board of Directors has authorized $3.0 billion for the repurchase of its common stock. The Company repurchased 3.2 million and 5.4 million shares for a total cost of $309 million and $532 million during the three and six months ended January 2, 2015. The remaining amount available to be purchased under the Company’s stock repurchase program as of January 2, 2015 was $622 million. On February 3, 2015, the Company's Board of Directors authorized an additional $2.0 billion for the repurchase of its common stock and approved the extension of its stock repurchase program to February 3, 2020, resulting in a cumulative authorized repurchase amount of $5.0 billion since the inception of the repurchase program. 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 January 2, 2015, the Company declared a cash dividend of $0.40 per share of the Company’s common stock to shareholders of record as of January 2, 2015, totaling $93 million, which was paid on January 15, 2015. In addition, in the three months ended October 3, 2014, the Company declared a cash dividend of $0.40 per share of the Company’s common stock to shareholders of record as of October 3, 2014, totaling $94 million, which was paid on October 15, 2014. On February 3, 2015, the Company declared a cash dividend of $0.50 per share of the Company's common stock to shareholders of record as of April 3, 2015, which will be paid on April 16, 2015. 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
	Jan. 02, 2015
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 January 2, 2015 and December 27, 2013. 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):
		January 2,			June 27,
		2015			2014
	Benefit obligation	$	220		$	255
	Fair value of plan assets	(168		)	(191		)
	Unfunded status	$	52		$	64
	The following table presents the unfunded amounts as recognized on the Company’s condensed consolidated balance sheets (in millions):
		January 2,			June 27,
		2015			2014
	Current liabilities	$	1		$	1
	Non-current liabilities	51			63
	Net amount recognized	$	52		$	64
	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 January 2, 2015 and December 27, 2013. The Company’s expected employer contribution for its Japanese defined benefit pension plans is $11 million in fiscal 2015.

Acquisitions

Acquisitions	6 Months Ended
	Jan. 02, 2015
Business Combinations [Abstract]
Acquisitions	11. Acquisitions
	The condensed consolidated financial statements include the results of operations of acquired companies commencing after their respective acquisition dates. Disclosed below are those acquisitions which have a significant impact to these condensed consolidated financial statements.
	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 has been fully integrated into the Company's HGST subsidiary and became a wholly-owned indirect subsidiary of the Company. The acquisition furthered 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 values assigned to the acquired assets and liabilities were finalized during the three months ended June 27, 2014, and the final purchase price allocation for Virident was as follows (in millions):
	Tangible assets acquired and liabilities assumed	$	58
	Intangible assets	49
	Goodwill	506
	Total	$	613
	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 has been fully integrated into the Company's HGST subsidiary and became a wholly-owned indirect subsidiary of the Company. The acquisition augmented HGST's existing solid-state storage capabilities.
	The values assigned to the acquired assets and liabilities were finalized during the three months ended October 3, 2014, and the final purchase price allocation for sTec was as follows (in millions):
	Tangible assets acquired and liabilities assumed	$	189
	Intangible assets	58
	Goodwill	89
	Total	$	336

Employee_Termination_Asset_Imp

Employee Termination, Asset Impairment and Other Charges	6 Months Ended
	Jan. 02, 2015
Postemployment Benefits [Abstract]
Employee Termination Benefits and Other Charges	12. Employee Termination, Asset Impairment and Other Charges
	The Company periodically incurs charges to realign its operations with anticipated market demand. The following table summarizes the Company's employee termination, asset impairment and other charges over fiscal year 2015 (in millions):
		Employee			Impairment			Total
		Termination			of Assets
		Benefits
	Accrual at June 27, 2014	$	—		$	—		$	—
	Charges	8			1			9
	Non-cash charges	—			(1		)	(1		)
	Accrual at October 3, 2014	$	8		$	—		$	8
	Charges	34			19			53
	Cash payments	(9		)	—			(9		)
	Non-cash charges	—			(19		)	(19		)
	Accrual at January 2, 2015	$	33		$	—		$	33

Thailand_Flooding_Notes

Thailand Flooding (Notes)	6 Months Ended
	Jan. 02, 2015
Thailand Flooding [Abstract]
Unusual or Infrequent Items Disclosure [Text Block]	13. Thailand Flooding
	In October 2011, severe flooding in Thailand inundated all of the Company’s Thailand manufacturing facilities and submerged certain equipment located there. The Company maintains insurance coverage that provides property and business interruption coverage in the event of losses arising from flooding. As a result, the Company received a total of $50 million of insurance recoveries, of which $13 million was received previously and $37 million was received in the three months ended January 2, 2015 and recorded within the "Selling, general and administrative" line item on the Company's condensed consolidated statements of income. As a result, all claims submitted by the Company to its insurers have been closed as of January 2, 2015.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	6 Months Ended
	Jan. 02, 2015
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	14. Recent Accounting Pronouncements
	In July 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("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 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 was the first quarter of fiscal 2015. The Company adopted this pronouncement in the first quarter of fiscal 2015, and it did not have a material effect on its condensed consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers" ("ASU 2014-09"), which amends the guidance in former Accounting Standards Codification Topic 605, "Revenue Recognition," to provide a single, comprehensive revenue recognition model for all contracts with customers. The new standard requires an entity to recognize revenue in a manner that depicts the transfer of promised goods or services to customers in amounts that reflect the consideration to which an entity expects to be entitled in exchange for those goods or services. The new standard also requires entities to enhance disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The new standard allows for either a full retrospective or a modified retrospective transition method and is effective for fiscal years beginning after December 15, 2016, which for the Company is the first quarter of fiscal 2018. The Company has not yet selected a transition method and is currently evaluating the impact ASU 2014-09 will have on its consolidated financial statements and related disclosures.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	6 Months Ended
	Jan. 02, 2015
Accounting Policies [Abstract]
Fiscal Period, Policy [Policy Text Block]	The Company's fiscal year ends on the Friday nearest to June 30 and typically consists of 52 weeks. Approximately every six years, the Company reports a 53-week fiscal year to align its fiscal year with the foregoing policy. The Company's fiscal second quarters ended January 2, 2015 and December 27, 2013 both consisted of 13 weeks. Fiscal year 2015 will be comprised of 53 weeks and will end on July 3, 2015.
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
	Jan. 02, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventories; Property, Plant and Equipment; and Other Intangible Assets
		January 2,			June 27,
		2015			2014
		(in millions)
	Inventories:
	Raw materials and component parts	$	154		$	168
	Work-in-process	510			493
	Finished goods	618			565
	Total inventories	$	1,282		$	1,226
	Property, plant and equipment:
	Property, plant and equipment	$	8,353		$	8,123
	Accumulated depreciation	(5,254		)	(4,830		)
	Property, plant and equipment, net	$	3,099		$	3,293
	Other intangible assets:
	Other intangible assets	$	983		$	984
	Accumulated amortization	(624		)	(530		)
	Other intangible assets, net	$	359		$	454
Changes in Warranty Accrual	Changes in the warranty accrual were as follows (in millions):
		Three Months Ended						Six Months Ended
		January 2,			December 27,			January 2,			December 27, 2013
		2015			2013			2015
	Warranty accrual, beginning of period	$	201		$	195		$	182		$	187
	Warranty liability assumed as a result of acquisition	—			1			—			4
	Charges to operations	50			44			99			84
	Utilization	(44		)	(57		)	(93		)	(106		)
	Changes in estimate related to pre-existing warranties	16			7			35			21
	Warranty accrual, end of period	$	223		$	190		$	223		$	190
Available-for-sale Securities [Table Text Block]	The following table summarizes, by major type, the fair value and cost basis of the Company’s investments as of January 2, 2015 (in millions):
		Cost Basis			Unrealized Gains (Losses)			Fair Value
	Available-for-sale securities:
	U.S. Treasury securities	$	159		$	—		$	159
	U.S. Government agency securities	126			—			126
	Commercial paper	154			—			154
	Certificates of deposit	26			—			26
	Total	$	465		$	—		$	465
	Short-term investments							$	241
	Included in other non-current assets							224
	Total							$	465
	The following table summarizes, by major type, the fair value and cost basis of the Company’s investments as of June 27, 2014 (in millions):
		Cost Basis			Unrealized Gains (Losses)			Fair Value
	Available-for-sale securities:
	U.S. Treasury securities	$	180		$	—		$	180
	U.S. Government agency securities	88			—			88
	Commercial paper	165			—			165
	Certificates of deposit	66			—			66
	Total	$	499		$	—		$	499
	Short-term investments							$	284
	Included in other non-current assets							215
	Total							$	499
Investments Classified by Contractual Maturity Date [Table Text Block]	The fair value of the Company’s investments classified as available-for-sale securities as of June 27, 2014, by remaining contractual maturity, were as follows (in millions):
		Cost Basis			Fair Value
	Due in less than one year:	$	284		$	284
	Due in one to five years:	215			215
	Total	$	499		$	499
	The fair value of the Company’s investments classified as available-for-sale securities at January 2, 2015, by remaining contractual maturity, were as follows (in millions):
		Cost Basis			Fair Value
	Due in less than one year:	$	241		$	241
	Due in one to five years:	224			224
	Total	$	465		$	465
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 (loss) for the six months ended January 2, 2015 (in millions):
		Actuarial Pension Gain			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
	Balance at June 27, 2014	$	7		$	5		$	12
	Other comprehensive income (loss) before reclassifications	—			(57		)	(57		)
	Amounts reclassified from accumulated other comprehensive income (loss)	—			13			13
	Net current-period other comprehensive income (loss)	—			(44		)	(44		)
	Balance at January 2, 2015	$	7		$	(39	)	$	(32	)
	The following table illustrates the changes in the balances of each component of accumulated other comprehensive income (loss) for the six months ended December 27, 2013 (in millions):
		Actuarial Pension Gain			Unrealized Gain (Loss) on Foreign Exchange Contracts			Accumulated Other Comprehensive Income (Loss)
	Balance at June 28, 2013	$	11		$	(46	)	$	(35	)
	Other comprehensive income (loss) before reclassifications	—			(11		)	(11		)
	Amounts reclassified from accumulated other comprehensive income (loss)	—			(3		)	(3		)
	Net current-period other comprehensive income (loss)	—			(14		)	(14		)
	Balance at December 27, 2013	$	11		$	(60	)	$	(49	)

Income_per_Common_Share_Tables

Income per Common Share (Tables)	6 Months Ended
	Jan. 02, 2015
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
		January 2,		December 27,		January 2,		December 27,
		2015		2013		2015		2013
	Net income	$	438	$	430	$	861	$	925
	Weighted average shares outstanding:
	Basic	233		236		233		236
	Employee stock options and other	5		7		6		7
	Diluted	238		243		239		243
	Income per common share:
	Basic	$	1.88	$	1.82	$	3.7	$	3.92
	Diluted	$	1.84	$	1.77	$	3.6	$	3.81
	Anti-dilutive potential common shares excluded*	1		2		2		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.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jan. 02, 2015
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 January 2, 2015, 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	$	1,677	$	—	$	—	$	1,677
	U.S. Government agency securities	—		15		—		15
	Commercial paper	—		20		—		20
	Total cash equivalents	1,677		35		—		1,712
	Short-term investments:
	U.S. Government agency securities	—		61		—		61
	Commercial paper	—		154		—		154
	Certificates of deposit	—		26		—		26
	Total short-term investments	—		241		—		241
	Long-term investments:
	U.S. Treasury securities	—		159		—		159
	U.S. Government agency securities	—		65		—		65
	Total long-term investments	—		224		—		224
	Total assets at fair value	$	1,677	$	500	$	—	$	2,177
	Liabilities:
	Foreign exchange contracts	$	—	$	45	$	—	$	45
	Total liabilities at fair value	$	—	$	45	$	—	$	45
	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 27, 2014, 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	$	756	$	—	$	—	$	756
	Bank acceptances	—		1		—		1
	Total cash equivalents	756		1		—		757
	Short-term investments:
	U.S. Government agency securities	—		53		—		53
	Commercial paper	—		165		—		165
	Certificates of deposit	—		66		—		66
	Total short-term investments	—		284		—		284
	Long-term investments:
	U.S. Treasury securities	—		180		—		180
	U.S. Government agency securities	—		35		—		35
	Total long-term investments	—		215		—		215
	Foreign exchange contracts	—		7		—		7
	Total assets at fair value	$	756	$	507	$	—	$	1,263
	Liabilities:
	Foreign exchange contracts	$	—	$	2	$	—	$	2
	Total liabilities at fair value	$	—	$	2	$	—	$	2

Foreign_Exchange_Contracts_Tab

Foreign Exchange Contracts (Tables)	6 Months Ended
	Jan. 02, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value and Balance Sheet Location of Contracts	The fair value and balance sheet location of the Company's foreign exchange contracts as of January 2, 2015 and June 27, 2014 were as follows (in millions):
		Asset Derivatives						Liability Derivatives
		January 2, 2015			June 27, 2014			January 2, 2015			June 27, 2014
	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	$	7	Accrued expenses	$	45	Accrued expenses	$	2
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 January 2, 2015 (in millions):
	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
	Hedging Instruments
	Foreign exchange contracts
	Financial assets	$	1		$	(1	)	$	—
	Financial liabilities	(46		)	1			(45		)
	Total derivative instruments	$	(45	)	$	—		$	(45	)
	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 27, 2014 (in millions):
	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
	Hedging Instruments
	Foreign exchange contracts
	Financial assets	$	9		$	(2	)	$	7
	Financial liabilities	(4		)	2			(2		)
	Total derivative instruments	$	5		$	—		$	5
Gains (Losses) of Derivatives in Cash Flow Hedging Relationships	The impact on the condensed consolidated financial statements was as follows (in millions):
		Amount of Loss Recognized in												Location of	Amount of (Gain) Loss Reclassified
		Accumulated OCI on Derivatives												(Gain) Loss	From Accumulated OCI into Income
														Reclassified
														from
														Accumulated
	Derivatives in Cash	Three			Six Months Ended			Three			Six Months Ended			OCI into	Three			Six Months Ended			Three		Six Months Ended
	Flow Hedging Relationships	Months						Months						Income	Months						Months
		Ended						Ended							Ended						Ended
		January 2,						December 27,							January 2,						December 27,
		2015						2013							2015						2013
	Foreign exchange contracts	$	(35	)	$	(57	)	$	—		$	(11	)	Cost of revenue	$	(17	)	$	(13	)	$	30	$	3

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	6 Months Ended
	Jan. 02, 2015
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 27, 2014	10.1			$	37.03
	Granted	1.2			100.06
	Exercised	(1.3	)		31.04
	Options outstanding at October 3, 2014	10			45.16
	Exercised	(1.1	)		32.14
	Canceled or expired	(0.1	)		32.53
	Options outstanding at January 2, 2015	8.8			$	47.01		4.4	$	564
	Exercisable at January 2, 2015	4			$	32.98		3.1	$	314
	Vested and expected to vest after January 2, 2015	8.6			$	46.41		4.4	$	558
Restricted Stock Unit 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 27, 2014	3.7			$	49.77
	Granted	1.1			100.07
	Vested	(1.5	)		40.57
	RSUs outstanding at October 3, 2014	3.3			70.88
	Granted*	—			101.27
	Vested	(0.1	)		48.25
	RSUs outstanding at January 2, 2015	3.2			72.15
	Expected to vest after January 2, 2015	3			$	71.69
	*	Shares granted were immaterial for rounding purposes.
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
		January 2,		December 27,		January 2,	December 27,
		2015		2013		2015	2013
	Suboptimal exercise factor	2.59		2.2		2.51	2.06
	Range of risk-free interest rates	0.25% to 1.92%		0.12% to 2.44%		0.11% to 2.16%	0.10% to 2.44%
	Range of expected stock price volatility	0.23 to 0.46		0.29 to 0.49		0.23 to 0.47	0.29 to 0.50
	Weighted average expected volatility	0.35		0.41		0.36	0.43
	Post-vesting termination rate	1.69%		3.18%		1.25%	3.09%
	Dividend yield	1.45%		1.45%		1.68%	1.58%
	Fair value	$31.96		$25.29		$32.29	$24.03

Pensions_and_Other_Postretirem1

Pensions and Other Post-retirement Benefit Plans (Tables)	6 Months Ended
	Jan. 02, 2015
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):
		January 2,			June 27,
		2015			2014
	Benefit obligation	$	220		$	255
	Fair value of plan assets	(168		)	(191		)
	Unfunded status	$	52		$	64
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):
		January 2,			June 27,
		2015			2014
	Current liabilities	$	1		$	1
	Non-current liabilities	51			63
	Net amount recognized	$	52		$	64

Acquisitions_Tables

Acquisitions (Tables)	6 Months Ended
	Jan. 02, 2015
Business Combinations [Abstract]
Purchase Price Allocations	The values assigned to the acquired assets and liabilities were finalized during the three months ended June 27, 2014, and the final purchase price allocation for Virident was as follows (in millions):
	Tangible assets acquired and liabilities assumed	$	58
	Intangible assets	49
	Goodwill	506
	Total	$	613
	The values assigned to the acquired assets and liabilities were finalized during the three months ended October 3, 2014, and the final purchase price allocation for sTec was as follows (in millions):
	Tangible assets acquired and liabilities assumed	$	189
	Intangible assets	58
	Goodwill	89
	Total	$	336

Employee_Termination_Asset_Imp1

Employee Termination, Asset Impairment and Other Charges Employee Termination, Asset Impairment and Other Charges (Tables)	6 Months Ended
	Jan. 02, 2015
Employee Termination, Asset Impairment and Other Charges [Abstract]
Employee Termination, Asset Impairment and Other Charges [Table Text Block]	The following table summarizes the Company's employee termination, asset impairment and other charges over fiscal year 2015 (in millions):
		Employee			Impairment			Total
		Termination			of Assets
		Benefits
	Accrual at June 27, 2014	$	—		$	—		$	—
	Charges	8			1			9
	Non-cash charges	—			(1		)	(1		)
	Accrual at October 3, 2014	$	8		$	—		$	8
	Charges	34			19			53
	Cash payments	(9		)	—			(9		)
	Non-cash charges	—			(19		)	(19		)
	Accrual at January 2, 2015	$	33		$	—		$	33

Supplemental_Financial_Stateme2

Supplemental Financial Statement Data - Inventories; Property, Plant and Equipment; and Other Intangible Assets (Detail) (USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Inventories:
Raw materials and component parts	$154	$168
Work-in-process	510	493
Finished goods	618	565
Total inventories	1,282	1,226
Property, plant and equipment:
Property, plant and equipment	8,353	8,123
Accumulated depreciation	-5,254	-4,830
Property, plant and equipment, net	3,099	3,293
Other intangible assets:
Other intangible assets, gross	983	984
Accumulated amortization	-624	-530
Other intangible assets, net	$359	$454

Supplemental_Financial_Stateme3

Supplemental Financial Statement Data - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Jun. 27, 2014
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	$77	$63

Supplemental_Financial_Stateme4

Supplemental Financial Statement Data - Changes in Accrual Warranty (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Product Warranties Disclosures [Abstract]
Warranty accrual, beginning of period	$201	$195	$182	$187
Warranty liabilities assumed as a result of the Acquisition	0	1	0	4
Charges to operations	50	44	99	84
Utilization	-44	-57	-93	-106
Changes in estimate related to pre-existing warranties	16	7	35	21
Warranty accrual, end of period	$223	$190	$223	$190

Supplemental_Financial_Stateme5

Supplemental Financial Statement Data Supplemental FS Data - Investments (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Jun. 27, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Current	$241	$284
Available-for-sale Securities, Noncurrent	224	215
Available-for-sale Securities, Amortized Cost Basis	465	499
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	0
Available-for-sale Securities, Fair Value	465	499
US Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	159	180
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	0
Available-for-sale Securities, Fair Value Disclosure	159	180
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	126	88
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	0
Available-for-sale Securities, Fair Value Disclosure	126	88
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	154	165
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	0
Available-for-sale Securities, Fair Value Disclosure	154	165
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	26	66
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	0
Available-for-sale Securities, Fair Value Disclosure	$26	$66

Supplemental_Financial_Stateme6

Supplemental Financial Statement Data Supplemental FS Data - Investments by Maturity Date (Details) (USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Investments, Equity Securities By Maturity Date [Abstract]
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis	$241	$284
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	224	215
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	465	499
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value	241	284
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	224	215
Available-for-sale Securities, Debt Maturities, Fair Value	$465	$499

Supplemental_Financial_Stateme7

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	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Changes in the Balances of Each Component of Accumulated Comprehensive Income (Loss) [Line Items]
Beginning Balance			$12	($35)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			-57	-11
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			13	-3
Other comprehensive income (loss)	-18	-30	-44	-14
Ending Balance	-32	-49	-32	-49
Accumulated Defined Benefit Plans Adjustment [Member]
Changes in the Balances of Each Component of Accumulated Comprehensive Income (Loss) [Line Items]
Beginning Balance			7	11
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0	0
Other comprehensive income (loss)			0	0
Ending Balance	7	11	7	11
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			5	-46
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			-57	-11
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			13	-3
Other comprehensive income (loss)			-44	-14
Ending Balance	($39)	($60)	($39)	($60)

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	Jan. 02, 2015		Dec. 27, 2013		Jan. 02, 2015		Dec. 27, 2013
Earnings Per Share [Abstract]
Net income	$438		$430		$861		$925
Weighted average shares outstanding:
Basic	233		236		233		236
Employee stock options and other	5		7		6		7
Diluted	238		243		239		243
Income per common share:
Basic	$1.88		$1.82		$3.70		$3.92
Diluted	$1.84		$1.77		$3.60		$3.81
Anti-dilutive potential common shares excluded*	1	[1]	2	[1]	2	[1]	1	[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
	Jan. 02, 2015	Jan. 09, 2014
Debt Instrument [Line Items]
Total unsecured loan under credit facility	$4,000,000,000
Line of credit facility additional borrowing capacity	1,000,000,000
Period of Term Loan Facility	5 years
Interest rate of borrowing under credit facility	1.66%
Remaining outstanding balance term loan facility	2,400,000,000	1,800,000,000
Sublimit for Letters of Credit Under Revolving Credit Facility	100,000,000
Sublimit for Swing Line Loans Under Revolving Credit Facility	50,000,000
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	63,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	156,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	219,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	250,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	1,700,000,000
Term loan facility [Member]
Debt Instrument [Line Items]
Total unsecured loan under credit facility	2,500,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility revolving loan	$1,500,000,000

Legal_Proceedings_Additional_I

Legal Proceedings - Additional Information (Detail) (USD $)	Jan. 02, 2015	Dec. 23, 2014	Oct. 14, 2014	Oct. 12, 2012	Jan. 23, 2012
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
Amount of total award issued by the arbitrator					$630.40
Amount of total award issued by arbitrator vacated				630.4
Final Arbitration Award			773.4
Disputed Post Award Interest		28.9
Loss Contingency, Range of Possible Loss, Maximum	$90

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Income Tax Disclosure [Line Items]
Income tax provision	$20	$37	$57	$74
Tax Benefit Resulting From Retroactive Extension Of Research And Development Credit	16		16
Expiration date of tax holiday in Malaysia, Philippines, Singapore and Thailand			from 2015 through 2025
Increase (Decrease) in liability for unrecognized tax benefits	9		16
Unrecognized tax benefits	316		316
Estimated impact of proposed IRS adjustments on Pre-tax income	$200		$200

Fair_Value_Measurements_Financ

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$0	$7
Derivative Liabilities	-45	-2
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	1,712	757
Short-term Investments, Fair Value Disclosure	241	284
Long-term Investments, Fair Value Disclosure	224	215
Total assets at fair value	2,177	1,263
Total liabilities at fair value	45	2
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	1,677	756
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Investments, Fair Value Disclosure	159	180
Fair Value, Measurements, Recurring [Member] | Bankers Acceptance [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents		1
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	20
Short-term Investments, Fair Value Disclosure	154	165
Fair Value, Measurements, Recurring [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term Investments, Fair Value Disclosure	26	66
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	15
Short-term Investments, Fair Value Disclosure	61	53
Long-term Investments, Fair Value Disclosure	65	35
Fair Value, Measurements, Recurring [Member] | Foreign exchange contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		7
Derivative Liabilities	45	2
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 cash equivalents	1,677	756
Short-term Investments, Fair Value Disclosure	0	0
Long-term Investments, Fair Value Disclosure	0	0
Total assets at fair value	1,677	756
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	1,677	756
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Investments, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | Bankers Acceptance [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents		0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0
Short-term Investments, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term Investments, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 1 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0
Short-term Investments, Fair Value Disclosure	0	0
Long-term Investments, Fair Value Disclosure	0	0
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]
Derivative Asset		0
Derivative Liabilities	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 cash equivalents	35	1
Short-term Investments, Fair Value Disclosure	241	284
Long-term Investments, Fair Value Disclosure	224	215
Total assets at fair value	500	507
Total liabilities at fair value	45	2
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] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Investments, Fair Value Disclosure	159	180
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | Bankers Acceptance [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents		1
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	20
Short-term Investments, Fair Value Disclosure	154	165
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term Investments, Fair Value Disclosure	26	66
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 2 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	15
Short-term Investments, Fair Value Disclosure	61	53
Long-term Investments, Fair Value Disclosure	65	35
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]
Derivative Asset		7
Derivative Liabilities	45	2
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 cash equivalents	0	0
Short-term Investments, Fair Value Disclosure	0	0
Long-term Investments, Fair Value Disclosure	0	0
Total assets at fair value	0	0
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] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Investments, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | Bankers Acceptance [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents		0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0
Short-term Investments, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term Investments, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using Level 3 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0
Short-term Investments, Fair Value Disclosure	0	0
Long-term Investments, Fair Value Disclosure	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]
Derivative Asset		0
Derivative Liabilities	$0	$0

Foreign_Exchange_Contracts_Add

Foreign Exchange Contracts - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Foreign Exchange Contracts [Abstract]
Contract maturity dates	Less than 12 months
Unrealized gains expected to be reclassified into earnings	$39,000,000		$39,000,000
Foreign exchange contracts opened during the period by company	1,000,000,000	1,700,000,000	2,000,000,000	2,700,000,000
Foreign exchange contracts closed during the period by company	$1,100,000,000	$1,300,000,000	$2,100,000,000	$2,700,000,000

Foreign_Exchange_Contracts_Fai

Foreign Exchange Contracts - Fair Value and Balance Sheet Location of Contracts (Detail) (USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]
Derivative Asset	$0	$7
Derivatives Designated as Hedging Instruments Fair Value, Liability Derivatives	45	2
Other current assets [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	0	7
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	($45)	($2)

Foreign_Exchange_Contracts_Net

Foreign Exchange Contracts Net Amounts of Foreign Exchange Contract Assets and Liabilities Presented In the Balance Sheet (Details) (USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Asset, Fair Value, Gross Asset	$1	$9
Derivative Asset, Fair Value, Amount Offset	-1	-2
Derivative Assets	0	7
Derivative Liability, Fair Value, Gross Liability	-46	-4
Derivative Liability, Fair Value, Amount Offset	1	2
Derivative Liabilities	-45	-2
Derivative Assets	-45	5
Derivative, Fair Value, Amount Offset	0	0
Derivative Assets (Liabilities), at Fair Value, Net	($45)	$5

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	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivatives	($35)	$0	($57)	($11)
Cost of revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Gain) Loss Reclassified From Accumulated OCI into Income	($17)	$30	($13)	$3

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended				6 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Apr. 03, 2015	Jan. 02, 2015	Oct. 03, 2014	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013	Feb. 03, 2015	21-May-12
Stock Based Compensation [Abstract]
Expenses on stock-based compensation		$18,000,000		$24,000,000	$37,000,000	$45,000,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense		7,000,000		6,000,000	12,000,000	11,000,000
Total compensation cost related to unvested stock options and ESPP rights issued		129,000,000			129,000,000
Weighted average service period					2 years 2 months 5 days
Expense related to the vesting of restricted stock unit awards		23,000,000		18,000,000	43,000,000	39,000,000
EmployeeServiceShareBasedCompensationTaxBenefitFromRestrictedStockAmortizationExpense		6,000,000		5,000,000	11,000,000	9,000,000
Unamortized fair value of all unvested restricted stock unit awards		157,000,000			157,000,000
Weighted average vesting period					1 year 8 months 12 days
Compensation cost for cash-settled stock appreciation rights		8,000,000		20,000,000	12,000,000	24,000,000
EmployeeServiceShareBasedCompensationTaxBenefitFromStockAppreciationRightsCompensationExpense		2,000,000		4,000,000	3,000,000	5,000,000
Total liability related to SARs		63,000,000			63,000,000
Options outstanding to purchase shares with exercise price below company stock price		8.8			8.8
Options outstanding to purchase shares with exercise price below company stock price, intrinsic value		564,000,000			564,000,000
Aggregate intrinsic value of options exercised under the Company's stock option plan		76,000,000		80,000,000	163,000,000	107,000,000
Grant-date fair value of the shares underlying the restricted stock awards		3,000,000			116,000,000
Forfeiture rate of restricted stock unit valuation assumption		4.30%			4.40%
Stock Appreciation Right outstanding, weighted average exercise price		$8.11			$8.11
Number of assumed SARs outstanding		0.6			0.6
Weighted average expected term of the Company's stock options		5 years 11 months 27 days		5 years 4 months 24 days	5 years 9 months 22 days	5 years
StockRepurchaseProgramAdditionalAmountAuthorized							2,000,000,000	3,000,000,000
Stock Repurchase Program Total Amount Authorized							5,000,000,000
Treasury Stock, Shares, Acquired		3.2			5.4
Treasury Stock, Value, Acquired, Cost Method		309,000,000			532,000,000
RemainingAmountForRepurchaseUnderShareRepurchaseProgram		622,000,000			622,000,000
Cash dividend	$0.50	$0.40	$0.40
Payments of Dividends		$93,000,000	$94,000,000		$187,000,000	$118,000,000

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Option Activity (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 02, 2015	Oct. 03, 2014
Stock Option Activity [Abstract]
Options outstanding, Beginning Balance, Numbers of Shares	10	10.1
Granted, Number of Shares		1.2
Exercised, Number of Shares	-1.1	-1.3
Options Canceled or Expired In Period	-0.1
Options outstanding, Ending Balance, Numbers of Shares	8.8	10
Exercisable at January 2, 2015	4
Vested and expected to vest after January 2, 2015	8.6
Options outstanding, Beginning Balance, Weighted Average Exercise Price Per Share	$45.16	$37.03
Granted, Weighted Average Exercise Price Per Share		$100.06
Exercised, Weighted Average Exercise Price Per Share	$32.14	$31.04
Canceled or expired, Weighted Average Exercise Price Per Share	$32.53
Options outstanding, Ending Balance, Weighted Average Exercise Price Per Share	$47.01	$45.16
Exercisable at January 2, 2015, Weighted Average Exercise Price Per Share	$32.98
Vested and expected to vest after January 2, 2015, Weighted Average Exercise Price Per Share	$46.41
Options outstanding at January 2, 2015, Weighted Average Remaining Contractual Life (in years)	4 years 5 months 9 days
Exercisable at January 2, 2015, Weighted Average Remaining Contractual Life (in years)	3 years 0 months 22 days
Vested and expected to vest after January 2, 2015, Weighted Average Remaining Contractual Life (in years)	4 years 4 months 28 days
Options outstanding at January 2, 2015, Aggregate Intrinsic Value	$564
Exercisable at January 2, 2015, Aggregate Intrinsic Value	314
Vested and expected to vest after January 2, 2015, Aggregate Intrinsic Value	$558

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Units (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 02, 2015	Oct. 03, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Numbers of Shares, Beginning Balance	3.3	3.7
Restricted stock, Number of share granted	0	1.1
Restricted stock, Number of share vested	-0.1	-1.5
Numbers of Shares, Ending Balance	3.2	3.3
Number of share, Expected to vest after January 2, 2015	3
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	70.88	49.77
Restricted stock, Granted, Weighted Average Grant Date Fair Value Per Share	101.27	100.07
Restricted stock, Vested, Weighted Average Grant Date Fair Value Per Share	48.25	40.57
Weighted Average Grant Date Fair Value Per Share, Ending Balance	72.15	70.88
Weighted Average Grant Date Fair Value Per Share, Expected to vest after January 2, 2015	71.69

StockBased_Compensation_Fair_V

Stock-Based Compensation - Fair Value of Stock Options Granted (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Suboptimal exercise factor	2.59	2.2	2.51	2.06
Risk-free interest rates, minimum	0.25%	0.12%	0.11%	0.10%
Risk-free interest rates, maximum	1.92%	2.44%	2.16%	2.44%
Expected stock price volatility, minimum	0.23%	0.29%	0.23%	0.29%
Expected stock price volatility, maximum	0.46%	0.49%	0.47%	0.50%
Weighted average expected volatility	0.35%	0.41%	0.36%	0.43%
Post-vesting termination rate	1.69%	3.18%	1.25%	3.09%
Dividend yield	1.45%	1.45%	1.68%	1.58%
Fair value	$31.96	$25.29	$32.29	$24.03

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	Jan. 02, 2015	Jul. 03, 2015
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	3.50%
Scenario, Forecast [Member] | Japan pension benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution for pension plan		$11

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 $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Japan pension benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	$220	$255
Fair value of plan assets	-168	-191
Unfunded status	$52	$64

Pensions_and_Other_Postretirem4

Pensions and Other Post-retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheet (Detail) (Japan pension benefits [Member], USD $)	Jan. 02, 2015	Jun. 27, 2014
In Millions, unless otherwise specified
Japan pension benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$1	$1
Non-current liabilities	51	63
Net amount recognized	$52	$64

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	Jan. 02, 2015	Jun. 27, 2014	Oct. 17, 2013	Sep. 12, 2013
In Millions, unless otherwise specified
Business Acquisition [Line Items]
Value allocated to goodwill	$2,566	$2,559
Virident [Member]
Business Acquisition [Line Items]
Value allocated to goodwill			506
sTec [Member]
Business Acquisition [Line Items]
Value allocated to goodwill				$89

Acquisitions_Virident_purchase

Acquisitions Virident purchase price allocation (Details) (USD $)	Jan. 02, 2015	Jun. 27, 2014	Oct. 17, 2013
In Millions, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$2,566	$2,559
Virident [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			58
Intangible assets			49
Goodwill			506
Total			$613

Acquisitions_sTec_Purchase_Pri

Acquisitions sTec Purchase Price Allocation (Details) (USD $)	Jan. 02, 2015	Jun. 27, 2014	Sep. 12, 2013
In Millions, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$2,566	$2,559
sTec [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			189
Intangible assets			58
Goodwill			89
Total			$336

Employee_Termination_Asset_Imp2

Employee Termination, Asset Impairment and Other Charges - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Oct. 03, 2014	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013	Jun. 27, 2014
Employee Termination, Asset Impairment and Other Charges [Line Items]
Severance And Other Charges Reserve	$33	$8		$33		$0
Employee termination, asset impairment and other charges	53		23	62	34
Severance And Other Charges Reserve Settled With Cash	9
Employee Termination Benefits Charge	53	9
Severance And Other Charges Reserve Settled Without Cash	-19	-1
Employee Termination Benefits [Member]
Employee Termination, Asset Impairment and Other Charges [Line Items]
Severance And Other Charges Reserve	33	8		33		0
Severance And Other Charges Reserve Settled With Cash	9
Employee Termination Benefits Charge	34	8
Severance And Other Charges Reserve Settled Without Cash	0	0
Impairment Of Property Plant And Equipment [Member]
Employee Termination, Asset Impairment and Other Charges [Line Items]
Severance And Other Charges Reserve	0	0		0		0
Severance And Other Charges Reserve Settled With Cash	0
Employee Termination Benefits Charge	19	1
Severance And Other Charges Reserve Settled Without Cash	($19)	($1)

Thailand_Flooding_Details

Thailand Flooding (Details) (USD $)	3 Months Ended	36 Months Ended	39 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2015	Oct. 03, 2014	Jan. 02, 2015
Thailand Flooding [Abstract]
Insurance Recoveries And Other Cost Reimbursement	$37	$13	$50