10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark one)
x	QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended December 31, 2017

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 000-09992

KLA-Tencor Corporation

(Exact name of registrant as specified in its charter)

Delaware	04-2564110
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
One Technology Drive, Milpitas, California	95035
(Address of Principal Executive Offices)	(Zip Code)

(408) 875-3000

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer x		Accelerated filer ¨
Non-accelerated filer ¨	(Do not check if a smaller reporting company)	Smaller reporting company ¨
		Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨    No  x

As of January 12, 2018, there were 156,620,125 shares of the registrant’s Common Stock, $0.001 par value, outstanding.

INDEX

		Page Number
PART I	FINANCIAL INFORMATION
Item 1	Financial Statements (Unaudited)
	Condensed Consolidated Balance Sheets as of December 31, 2017 and June 30, 2017	3
	Condensed Consolidated Statements of Operations for the Three Months and Six Months Ended December 31, 2017 and 2016	4
	Condensed Consolidated Statements of Comprehensive Income (Loss) for the Three Months and Six Months Ended December 31, 2017 and 2016	5
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended December 31, 2017 and 2016	6
	Notes to Condensed Consolidated Financial Statements	7
Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	35
Item 3	Quantitative and Qualitative Disclosures About Market Risk	54
Item 4	Controls and Procedures	55
PART II	OTHER INFORMATION
Item 1	Legal Proceedings	56
Item 1A	Risk Factors	56
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	73
Item 3	Defaults Upon Senior Securities	73
Item 4	Mine Safety Disclosures	73
Item 5	Other Information	73
Item 6	Exhibits	74
SIGNATURES		75
EXHIBIT INDEX		76

2

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

KLA-TENCOR CORPORATION

Condensed Consolidated Balance Sheets

(Unaudited)

(In thousands)	December 31, 2017			June 30, 2017
ASSETS
Current assets:
Cash and cash equivalents	$	1,073,394		$	1,153,051
Marketable securities	1,684,796			1,863,689
Accounts receivable, net	740,903			571,117
Inventories	787,971			732,988
Other current assets	66,929			71,221
Total current assets	4,353,993			4,392,066
Land, property and equipment, net	281,634			283,975
Goodwill	350,023			349,526
Deferred income taxes	193,740			291,967
Purchased intangibles, net	16,563			18,963
Other non-current assets	211,315			195,676
Total assets	$	5,407,268		$	5,532,173
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	149,844		$	147,380
Deferred system profit	248,829			180,861
Unearned revenue	64,256			65,507
Current portion of long-term debt	—			249,983
Other current liabilities	703,619			649,431
Total current liabilities	1,166,548			1,293,162
Non-current liabilities:
Long-term debt	2,486,426			2,680,474
Unearned revenue	67,927			59,713
Other non-current liabilities	460,742			172,407
Total liabilities	4,181,643			4,205,756
Commitments and contingencies (Note 12 and Note 13)
Stockholders’ equity:
Common stock and capital in excess of par value	548,691			529,283
Retained earnings	729,456			848,457
Accumulated other comprehensive income (loss)	(52,522		)	(51,323		)
Total stockholders’ equity	1,225,625			1,326,417
Total liabilities and stockholders’ equity	$	5,407,268		$	5,532,173

See accompanying notes to condensed consolidated financial statements (unaudited).

3

KLA-TENCOR CORPORATION

Condensed Consolidated Statements of Operations

(Unaudited)

	Three months ended						Six months ended
	December 31,						December 31,
(In thousands, except per share amounts)	2017			2016			2017			2016
Revenues:
Product	$	761,587		$	683,733		$	1,522,374		$	1,245,486
Service	214,235			193,152			423,029			382,072
Total revenues	975,822			876,885			1,945,403			1,627,558
Costs and expenses:
Costs of revenues	347,334			318,507			700,783			596,343
Research and development	156,745			130,912			303,477			260,145
Selling, general and administrative	105,546			93,532			213,259			187,920
Interest expense	27,372			30,624			57,948			61,356
Other expense (income), net	(8,482		)	(3,535		)	(13,523		)	(7,271		)
Income before income taxes	347,307			306,845			683,459			529,065
Provision for income taxes	481,626			68,594			536,842			112,713
Net income (loss)	$	(134,319	)	$	238,251		$	146,617		$	416,352
Net income (loss) per share:
Basic	$	(0.86	)	$	1.52		$	0.94		$	2.66
Diluted	$	(0.86	)	$	1.52		$	0.93		$	2.65
Cash dividends declared per share	$	0.59		$	0.54		$	1.18		$	1.06
Weighted-average number of shares:
Basic	156,587			156,335			156,707			156,232
Diluted	156,587			157,123			157,688			157,071

See accompanying notes to condensed consolidated financial statements (unaudited).

4

KLA-TENCOR CORPORATION

Condensed Consolidated Statements of Comprehensive Income (Loss)

(Unaudited)

	Three months ended						Six months ended
	December 31,						December 31,
(In thousands)	2017			2016			2017			2016
Net income (loss)	$	(134,319	)	$	238,251		$	146,617		$	416,352
Other comprehensive income (loss):
Currency translation adjustments:
Change in currency translation adjustments	4,821			(11,305		)	6,379			(7,381		)
Change in income tax benefit or expense	(1,836		)	1,086			(2,339		)	1,868
Net change related to currency translation adjustments	2,985			(10,219		)	4,040			(5,513		)
Cash flow hedges:
Change in net unrealized gains or losses	697			13,969			1,141			12,131
Reclassification adjustments for net gains or losses included in net income (loss)	(963		)	1,305			(3,081		)	2,684
Change in income tax benefit or expense	78			(5,494		)	676			(5,329		)
Net change related to cash flow hedges	(188		)	9,780			(1,264		)	9,486
Net change related to unrecognized losses and transition obligations in connection with defined benefit plans	(59		)	819			(93		)	1,064
Available-for-sale securities:
Change in net unrealized gains or losses	(5,863		)	(7,037		)	(5,196		)	(9,914		)
Reclassification adjustments for net gains or losses included in net income (loss)	69			(30		)	63			(234		)
Change in income tax benefit or expense	1,315			1,164			1,251			1,640
Net change related to available-for-sale securities	(4,479		)	(5,903		)	(3,882		)	(8,508		)
Other comprehensive income (loss)	(1,741		)	(5,523		)	(1,199		)	(3,471		)
Total comprehensive income (loss)	$	(136,060	)	$	232,728		$	145,418		$	412,881

See accompanying notes to condensed consolidated financial statements (unaudited).

5

KLA-TENCOR CORPORATION

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Six months ended December 31,
(In thousands)	2017			2016
Cash flows from operating activities:
Net income	$	146,617		$	416,352
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	31,412			29,314
Asset impairment charges	1,000			358
Non-cash stock-based compensation expense	27,770			23,922
Net (gain) loss on sales of marketable securities and other investments	49			(885		)
Changes in assets and liabilities, net of business acquisition:
Accounts receivable, net	(169,498		)	(62,627		)
Inventories	(44,434		)	14,319
Other assets	82,267			(8,838		)
Accounts payable	2,192			10,239
Deferred system profit	67,968			19,391
Other liabilities	357,657			(49,355		)
Net cash provided by operating activities	503,000			392,190
Cash flows from investing activities:
Acquisition of non-marketable securities	(3,377		)	(2,370		)
Business acquisition	(5,490		)	—
Capital expenditures, net	(29,125		)	(18,512		)
Proceeds from sale of assets	—			2,582
Purchases of available-for-sale securities	(326,012		)	(830,462		)
Proceeds from sale of available-for-sale securities	106,601			189,242
Proceeds from maturity of available-for-sale securities	391,760			356,177
Purchases of trading securities	(30,790		)	(73,278		)
Proceeds from sale of trading securities	35,382			68,465
Net cash provided by (used in) investing activities	138,949			(308,156		)
Cash flows from financing activities:
Proceeds from revolving credit facility, net of debt issuance costs	248,693			—
Repayment of debt	(696,250		)	(80,000		)
Issuance of common stock	20,579			23,694
Tax withholding payments related to vested and released restricted stock units	(26,195		)	(17,455		)
Common stock repurchases	(80,354		)	—
Payment of dividends to stockholders	(192,902		)	(173,842		)
Net cash used in financing activities	(726,429		)	(247,603		)
Effect of exchange rate changes on cash and cash equivalents	4,823			(7,886		)
Net decrease in cash and cash equivalents	(79,657		)	(171,455		)
Cash and cash equivalents at beginning of period	1,153,051			1,108,488
Cash and cash equivalents at end of period	$	1,073,394		$	937,033
Supplemental cash flow disclosures:
Income taxes paid, net	$	147,483		$	110,575
Interest paid	$	58,698		$	60,016
Non-cash activities:
Purchase of land, property and equipment, net - investing activities	$	5,548		$	1,985
Unsettled common stock repurchase - financing activities	$	1,289		$	—
Dividends payable - financing activities	$	7,590		$	12,763

See accompanying notes to condensed consolidated financial statements (unaudited).

6

KLA-TENCOR CORPORATION

Notes to Condensed Consolidated Financial Statements

(Unaudited)

NOTE 1 – BASIS OF PRESENTATION

Basis of Presentation. The condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the unaudited interim financial statements reflect all adjustments (consisting only of normal, recurring adjustments) necessary for a fair statement of the financial position, results of operations, comprehensive income (loss), and cash flows for the periods indicated. These financial statements and notes, however, should be read in conjunction with Item 8, “Financial Statements and Supplementary Data” included in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2017, filed with the SEC on August 4, 2017.

The condensed consolidated financial statements include the accounts of KLA-Tencor and its majority-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.

The results of operations for the three and six months ended December 31, 2017 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year ending June 30, 2018.

Certain reclassifications have been made to the prior year’s Condensed Consolidated Balance Sheet and notes to conform to the current year presentation. The reclassifications had no effect on the prior year’s Condensed Consolidated Statements of Operations, Comprehensive Income (Loss) and Cash Flows.

Management Estimates. The preparation of the condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions in applying the Company’s accounting policies that affect the reported amounts of assets and liabilities (and related disclosure of contingent assets and liabilities) at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

Revenue Recognition. The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectibility is reasonably assured. The Company derives revenue from three sources—sales of systems, spare parts and services. In general, the Company recognizes revenue for systems when the system has been installed, is operating according to predetermined specifications and is accepted by the customer. When the Company has demonstrated a history of successful installation and acceptance, the Company recognizes revenue upon delivery and customer acceptance. Under certain circumstances, however, the Company recognizes revenue prior to acceptance from the customer, as follows:

• When the customer fab has previously accepted the same tool, with the same specifications, and when the Company can objectively demonstrate that the tool meets all of the required acceptance criteria.

• When system sales to independent distributors have no installation requirement, contain no acceptance agreement, and 100% of the payment is due based upon shipment.

• When the installation of the system is deemed perfunctory.

• When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as intended and meets predetermined specifications.

In circumstances in which the Company recognizes revenue prior to installation, the portion of revenue associated with installation is deferred based on estimated fair value, and that revenue is recognized upon completion of the installation.

7

In many instances, products are sold in stand-alone arrangements. Services are sold separately through renewals of annual maintenance contracts. The Company has multiple element revenue arrangements in cases where certain elements of a sales arrangement are not delivered and accepted in one reporting period. To determine the relative fair value of each element in a revenue arrangement, the Company allocates arrangement consideration based on the selling price hierarchy. For substantially all of the arrangements with multiple deliverables pertaining to products and services, the Company uses vendor-specific objective evidence (“VSOE”) or third-party evidence (“TPE”) to allocate the selling price to each deliverable. The Company determines TPE based on historical prices charged for products and services when sold on a stand-alone basis. When the Company is unable to establish relative selling price using VSOE or TPE, the Company uses estimated selling price (“ESP”) in its allocation of arrangement consideration. The objective of ESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. ESP could potentially be used for new or customized products. The Company regularly reviews relative selling prices and maintains internal controls over the establishment and updates of these estimates.

In a multiple element revenue arrangement, the Company defers revenue recognition associated with the relative fair value of each undelivered element until that element is delivered to the customer. To be considered a separate element, the product or service in question must represent a separate unit of accounting, which means that such product or service must fulfill the following criteria: (a) the delivered item(s) has value to the customer on a stand-alone basis; and (b) if the arrangement includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in the control of the Company. If the arrangement does not meet all the above criteria, the entire amount of the sales contract is deferred until all elements are accepted by the customer.

Trade-in rights are occasionally granted to customers to trade in tools in connection with subsequent purchases. The Company estimates the value of the trade-in right and reduces the revenue recognized on the initial sale. This amount is recognized at the earlier of the exercise of the trade-in right or the expiration of the trade-in right.

The Company enters into volume purchase agreements with some of its customers. The Company accrues the estimated credits earned by its customers for such incentives, and in situations when the credit levels vary depending upon sales volume, the Company updates its accrual based on the amount that the Company estimates will be purchased pursuant to the volume purchase agreements. Accruals for customer credits are recorded as an offset to revenue or deferred revenue.

 Spare parts revenue is recognized when the parts have been shipped, risk of loss has passed to the customer and collection of the resulting receivable is reasonably assured.

Service and maintenance contract revenue is recognized ratably over the term of the maintenance contract. Revenue from services performed in the absence of a maintenance contract, including consulting and training revenue, is recognized when the related services are performed and collectibility is reasonably assured.

The Company sells stand-alone software that is subject to software revenue recognition guidance. The Company periodically reviews selling prices to determine whether VSOE exists, and in situations where the Company is unable to establish VSOE for undelivered elements such as post-contract service, revenue is recognized ratably over the term of the service contract.

The Company also defers the fair value of non-standard warranty bundled with equipment sales as unearned revenue. Non-standard warranty includes services incremental to the standard 40-hour per week coverage for 12 months. Non-standard warranty is recognized ratably as revenue when the applicable warranty term period commences.

The deferred system profit balance equals the value of products that have been shipped and billed to customers which have not met the Company’s revenue recognition criteria, less applicable product and warranty costs. Deferred system profit does not include the profit associated with product shipments to certain customers in Japan, to whom title does not transfer until customer acceptance. Shipments to such customers in Japan are classified as inventory at cost until the time of acceptance.

8

Recent Accounting Pronouncements.

Recently Adopted

In July 2015, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update for the subsequent measurement of inventory. The amended guidance requires entities to measure inventory at the lower of cost or net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The requirement would replace the current lower of cost or market evaluation and the accounting guidance is unchanged for inventory measured using last-in, first-out (“LIFO”) or the retail inventory method. The Company adopted this update beginning in the first quarter of its fiscal year ending June 30, 2018 on a prospective basis and there was no impact of adoption on its condensed consolidated financial statements.

Updates Not Yet Effective

In May 2014, the FASB issued an accounting standard update regarding revenue from customer contracts to transfer goods and services or non-financial assets unless the contracts are covered by other standards (for example, insurance or lease contracts). Under the new guidance, an entity should recognize revenue in connection with the transfer of promised goods or services to customers in an amount that reflects the consideration that the entity expects to be entitled to receive in exchange for those goods or services. In addition, the new standard requires that reporting companies disclose the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The new standard may be applied retrospectively to each prior period presented (“full retrospective transition method”) or retrospectively with the cumulative effect recognized as of the date of adoption (“modified retrospective transition method”). The FASB has also issued several amendments to the standard since its initial issuance. The Company intends to adopt the new standard in the first quarter of its fiscal year ending June 30, 2019 and elected a modified retrospective transition method to be applied to completed and incomplete contracts as of the adoption date.

To address the significant implementation requirements of the accounting standard update, the Company has established a revenue project steering committee and cross-functional implementation team for the implementation of the standard, including a review of all significant revenue arrangements to identify any differences in the timing, measurement, presentation of revenue recognition including new disclosure requirements.

The Company has completed its preliminary assessment of the potential impact that the implementation of this new standard will have on its consolidated financial statements and believes the most significant impact may include the following:

• The Company will account for the standard 12-month warranty for a majority of its products that is not separately paid for by the customers as a performance obligation since the Company provides for necessary repairs as well as preventive maintenance services for such products. The estimated fair value of the service will be deferred and recognized ratably as revenue over the warranty period.

• The Company will generally recognize revenue for its products at a point of time based on judgment of whether or not the Company has satisfied its performance obligation by transferring control of the product to the customer. In evaluating whether or not control has been transferred to the customer, the Company will consider whether or not certain indicators have been met. Not all of the indicators need to be met for the Company to conclude that control has transferred to the customer. The Company will be required to use significant judgment to evaluate whether or not the factors indicate that the customer has obtained control of the product and the following factors will be considered in evaluating whether or not control has transferred to the customer: the Company has a present right to payment; the customer has legal title; the customer has physical possession; the customer has significant risk and rewards of ownership; and the customer has accepted the product, or whether customer acceptance is considered a formality based on history of acceptance of similar products.

• The Company will recognize revenue for software licenses at the time of delivery since the VSOE requirement for undelivered element such as post-contract support is eliminated and companies are allowed to use established or best estimate selling price for the undelivered element to allocate and defer the revenue. As a result, the Company will recognize as revenue a portion of the sales price upon delivery of the software, compared to the current practice of recognizing the entire sales price ratably over the term of the service contract due to the lack of VSOE.

The Company will continue to assess the impact of the new standard, including potential changes to the accounting policies, business processes, systems and internal controls over financial reporting and its preliminary assessment of the impact is subject to change.

9

In January 2016, the FASB issued an accounting standard update that changes the accounting for financial instruments primarily related to equity investments (other than those accounted for under the equity method of accounting or those that result in consolidation of the investee), financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The accounting standard update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In February 2016, the FASB issued an accounting standard update which amends the existing accounting standards for leases. Consistent with current guidance, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification. Under the new guidance, a lessee will be required to recognize assets and liabilities for all leases with lease terms of more than 12 months. The update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2020 using a modified retrospective transition method. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In June 2016, the FASB issued an accounting standard update that changes the accounting for recognizing impairments of financial assets. Under the update, credit losses for certain types of financial instruments will be estimated based on expected losses. The update also modifies the impairment models for available-for-sale debt securities and for purchased financial assets with credit deterioration since their origination. The update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2021, with early adoption permitted starting in the first quarter of fiscal year ending June 30, 2020. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In October 2016, the FASB issued an accounting standard update to recognize the income tax consequences of intra-entity transfers of assets other than inventory when they occur. This eliminates the exception to postpone recognition until the asset has been sold to an outside party. This standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019, and early adoption is permitted. It is required to be applied on a modified retrospective basis through a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In January 2017, the FASB issued an accounting standard update to simplify the subsequent measurement of goodwill by removing the second step of the two-step impairment test, which requires an entity to determine the fair value of assets and liabilities similar to what is required in a purchase price allocation. Under the update, goodwill impairment will be calculated as the amount by which a reporting unit’s carrying value exceeds its fair value. This standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2021 and requires a prospective approach to adoption. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In January 2017, the FASB issued an accounting standard on clarifying the definition of a business, with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The standard is effective for the Company for its fiscal year ending June 30, 2019.  The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. 

In March 2017, the FASB issued an accounting standard update that changes the statements of operation classification of net periodic benefit cost related to defined benefit pension and/or other postretirement benefit plans. Under the update, employers will present the service cost component of net periodic benefit cost in the same statements of operations line item(s) as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit costs separately from the line item(s) that includes the service cost and outside of any subtotal of operating income, if one is presented. The standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019 and early adoption is permitted. It is required to be applied retrospectively, except for the provision regarding capitalization in assets which is required to be applied prospectively. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In May 2017, the FASB issued an accounting standard update regarding stock compensation that provides guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in order to reduce diversity in practice and reduce complexity.   The update is effective for the Company beginning in the first quarter of the Company’s fiscal year ending June 30, 2019 and should be applied prospectively with early adoption permitted as of the beginning of an interim or annual reporting period. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements.

10

In August 2017, the FASB issued an accounting standard update to hedge accounting to better align the Company’s risk management activities by refining financial and non-financial hedging strategy eligibilities. This update also amends the presentation and disclosure requirements to increase transparency to better understand an entity’s risk exposures and how hedging strategies are used to manage those exposures. This standard update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2020, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

NOTE 2 – FAIR VALUE MEASUREMENTS

The Company’s financial assets and liabilities are measured and recorded at fair value, except for its debt and certain equity investments in privately-held companies. These equity investments are generally accounted for under the cost method of accounting and are periodically assessed for other-than-temporary impairment when an event or circumstance indicates that an other-than-temporary decline in value may have occurred. The Company’s non-financial assets, such as goodwill, intangible assets, and land, property and equipment, are recorded at cost and are assessed for impairment when an event or circumstance indicates that an other-than-temporary decline in value may have occurred.

Fair Value of Financial Instruments. KLA-Tencor has evaluated the estimated fair value of financial instruments using available market information and valuations as provided by third-party sources. The use of different market assumptions and/or estimation methodologies could have a significant effect on the estimated fair value amounts. The fair value of the Company’s cash equivalents, accounts receivable, accounts payable and other current assets and liabilities approximate their carrying amounts due to the relatively short maturity of these items.

Fair Value Hierarchy. The authoritative guidance for fair value measurements establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:

Level 1	Valuations based on quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.
Level 2	Valuations based on 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 data for substantially the full term of the assets or liabilities.
Level 3	Valuations based on inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The Company’s financial instruments were classified within Level 1 or Level 2 of the fair value hierarchy as of December 31, 2017, because they were valued using quoted market prices, broker/dealer quotes or alternative pricing sources with observable levels of price transparency. As of December 31, 2017, the types of instruments valued based on quoted market prices in active markets included money market funds, certain U.S. Treasury securities and U.S. Government agency securities. Such instruments are generally classified within Level 1 of the fair value hierarchy.

As of December 31, 2017, the types of instruments valued based on other observable inputs included corporate debt securities, U.S. Treasury securities and sovereign securities. The market inputs used to value these instruments generally consist of market yields, reported trades and broker/dealer quotes. Such instruments are generally classified within Level 2 of the fair value hierarchy.

The principal market in which the Company executes its foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants generally are large financial institutions. The Company’s foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment. These contracts are typically classified within Level 2 of the fair value hierarchy.

11

Financial assets (excluding cash held in operating accounts and time deposits) and liabilities measured at fair value on a recurring basis, as of the date indicated below, were presented on the Company’s Condensed Consolidated Balance Sheet as follows:

As of December 31, 2017 (In thousands)	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents:
Money market funds and other	$	569,287		$	569,287	$	—
U.S. Treasury securities	3,745			—		3,745
Marketable securities:
Corporate debt securities	914,358			—		914,358
Sovereign securities	11,427			—		11,427
U.S. Treasury securities	404,983			394,486		10,497
U.S. Government agency securities	339,730			339,730		—
Total cash equivalents and marketable securities(1)	2,243,530			1,303,503		940,027
Other current assets:
Derivative assets	4,474			—		4,474
Other non-current assets:
Executive Deferred Savings Plan	192,169			142,809		49,360
Total financial assets(1)	$	2,440,173		$	1,446,312	$	993,861
Liabilities
Other current liabilities:
Derivative liabilities	$	(415	)	$	—	$	(415	)
Total financial liabilities	$	(415	)	$	—	$	(415	)

________________

(1) Excludes cash of $481.1 million held in operating accounts and time deposits of $33.6 million as of December 31, 2017.

12

Financial assets (excluding cash held in operating accounts and time deposits) and liabilities measured at fair value on a recurring basis, as of the date indicated below, were presented on the Company’s Condensed Consolidated Balance Sheet as follows:

As of June 30, 2017 (In thousands)	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents:
Corporate debt securities	$	76,472		$	—	$	76,472
Money market funds and other	616,039			616,039		—
U.S. Government agency securities	117,417			—		117,417
Sovereign securities	10,050			—		10,050
Marketable securities:
Corporate debt securities	1,042,723			—		1,042,723
Sovereign securities	42,515			—		42,515
U.S. Government agency securities	391,409			368,121		23,288
U.S. Treasury securities	373,299			373,299		—
Total cash equivalents and marketable securities(1)	2,669,924			1,357,459		1,312,465
Other current assets:
Derivative assets	5,931			—		5,931
Other non-current assets:
Executive Deferred Savings Plan	182,150			136,145		46,005
Total financial assets(1)	$	2,858,005		$	1,493,604	$	1,364,401
Liabilities
Other current liabilities:
Derivative liabilities	$	(1,275	)	$	—	$	(1,275	)
Total financial liabilities	$	(1,275	)	$	—	$	(1,275	)

________________

(1) Excludes cash of $307.4 million held in operating accounts and time deposits of $39.4 million as of June 30, 2017.

There were no transfers between Level 1 and Level 2 fair value measurements during the six months ended December 31, 2017. The Company generally did not have any assets or liabilities measured at fair value on a recurring basis within Level 3 fair value measurements as of December 31, 2017 or June 30, 2017.

13

NOTE 3 – FINANCIAL STATEMENT COMPONENTS

Balance Sheet Components

(In thousands)	As of December 31, 2017			As of June 30, 2017
Accounts receivable, net:
Accounts receivable, gross	$	752,618		$	592,753
Allowance for doubtful accounts	(11,715		)	(21,636		)
	$	740,903		$	571,117
Inventories:
Customer service parts	$	248,937		$	245,172
Raw materials	248,475			240,389
Work-in-process	237,261			193,026
Finished goods	53,298			54,401
	$	787,971		$	732,988
Other current assets:
Prepaid expenses	$	46,451		$	36,146
Other current assets	11,512			13,004
Income tax related receivables	8,966			22,071
	$	66,929		$	71,221
Land, property and equipment, net:
Land	$	40,620		$	40,617
Buildings and leasehold improvements	323,143			319,306
Machinery and equipment	568,203			551,277
Office furniture and fixtures	21,909			21,328
Construction-in-process	7,214			4,597
	961,089			937,125
Less: accumulated depreciation and amortization	(679,455		)	(653,150		)
	$	281,634		$	283,975
Other non-current assets:
Executive Deferred Savings Plan(1)	$	192,169		$	182,150
Other non-current assets	19,146			13,526
	$	211,315		$	195,676
Other current liabilities:
Compensation and benefits	$	222,503		$	172,707
Executive Deferred Savings Plan(1)	192,849			183,603
Customer credits and advances	116,856			95,188
Other accrued expenses	86,865			116,039
Warranty	45,013			45,458
Income taxes payable	22,525			17,040
Interest payable	17,008			19,396
	$	703,619		$	649,431
Other non-current liabilities:
Income taxes payable	$	355,849		$	68,439
Pension liabilities	74,868			72,801
Other non-current liabilities	30,025			31,167
	$	460,742		$	172,407

14

________________

(1) KLA-Tencor has a non-qualified deferred compensation plan (known as “Executive Deferred Savings Plan”) under which certain executives and non-employee directors may defer a portion of their compensation. Participants are credited with returns based on their allocation of their account balances among measurement funds. The Company controls the investment of these funds, and the participants remain general creditors of the Company. The Company invests these funds in certain mutual funds and such investments are classified as trading securities in the condensed consolidated balance sheets. Distributions from the Executive Deferred Savings Plan commence following a participant’s retirement or termination of employment or on a specified date allowed per the Executive Deferred Savings Plan provisions, except in cases where such distributions are required to be delayed in order to avoid a prohibited distribution under Internal Revenue Code Section 409A. Participants can generally elect the distributions to be paid in lump sum or quarterly cash payments over a scheduled period for up to 15 years and are allowed to make subsequent changes to their existing elections as permissible under the Executive Deferred Savings Plan provisions. Changes in the Executive Deferred Savings Plan liability are recorded in selling, general and administrative expense in the condensed consolidated statements of operations. The expense associated with changes in the liability included in selling, general and administrative expense was $7.0 million and $1.2 million during the three months ended December 31, 2017 and 2016, respectively and $13.8 million and $7.0 million during the six months ended December 31, 2017 and 2016. Changes in the Executive Deferred Savings Plan assets are recorded as gains (losses), net in selling, general and administrative expense in the condensed consolidated statements of operations. The amount of net gains included in selling, general and administrative expense was $7.0 million and $0.8 million during the three months ended December 31, 2017 and 2016, respectively and $13.9 million and $6.7 million during the six months ended December 31, 2017 and 2016, respectively.

Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income (loss) (“OCI”) as of the dates indicated below were as follows:

(In thousands)	Currency Translation Adjustments			Unrealized Gains (Losses) on Available-for-Sale Securities			Unrealized Gains (Losses) on Cash Flow Hedges		Unrealized Gains (Losses) on Defined Benefit Plans			Total
Balance as of December 31, 2017	$	(26,614	)	$	(7,751	)	$	3,957	$	(22,114	)	$	(52,522	)
Balance as of June 30, 2017	$	(30,654	)	$	(3,869	)	$	5,221	$	(22,021	)	$	(51,323	)

The effects on net income (loss) of amounts reclassified from accumulated OCI to the Condensed Consolidated Statement of Operations for the indicated period were as follows (in thousands):

	Location in the Condensed Consolidated	Three months ended December 31,						Six months ended December 31,
Accumulated OCI Components	Statements of Operations	2017			2016			2017			2016
Unrealized gains (losses) on cash flow hedges from foreign exchange and interest rate contracts	Revenues	$	397		$	(1,425	)	$	1,365		$	(2,906	)
	Costs of revenues	377			(69		)	1,338			(156		)
	Interest expense	189			189			378			378
	Net gains (losses) reclassified from accumulated OCI	$	963		$	(1,305	)	$	3,081		$	(2,684	)
Unrealized gains (losses) on available-for-sale securities	Other expense (income), net	$	(69	)	$	30		$	(63	)	$	234

The amounts reclassified out of accumulated OCI related to the Company’s defined benefit pension plans, which were recognized as a component of net periodic cost for the three and six months ended December 31, 2017 were $0.4 million and $0.8 million, respectively. The amounts reclassified out of accumulated OCI related to the Company’s defined benefit pension plans, which were recognized as a component of net periodic cost for the three and six months ended December 31, 2016 were $0.9 million and $1.3 million, respectively. For additional details, refer to Note 11, “Employee Benefit Plans” in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2017.

15

NOTE 4 – MARKETABLE SECURITIES

The amortized cost and fair value of marketable securities as of the dates indicated below were as follows:

As of December 31, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	918,399	$	204	$	(4,245	)	$	914,358
Money market funds and other	569,287		—		—			569,287
Sovereign securities	11,496		—		(69		)	11,427
U.S. Government agency securities	342,325		16		(2,611		)	339,730
U.S. Treasury securities	411,669		—		(2,941		)	408,728
Subtotal	2,253,176		220		(9,866		)	2,243,530
Add: Time deposits(1)	33,581		—		—			33,581
Less: Cash equivalents	592,315		—		—			592,315
Marketable securities	$	1,694,442	$	220	$	(9,866	)	$	1,684,796

As of June 30, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	1,120,548	$	598	$	(1,951	)	$	1,119,195
Money market funds and other	616,039		—		—			616,039
Sovereign securities	52,621		—		(56		)	52,565
U.S. Government agency securities	510,553		62		(1,789		)	508,826
U.S. Treasury securities	374,676		52		(1,429		)	373,299
Subtotal	2,674,437		712		(5,225		)	2,669,924
Add: Time deposits(1)	39,389		—		—			39,389
Less: Cash equivalents	845,639		—		(15		)	845,624
Marketable securities	$	1,868,187	$	712	$	(5,210	)	$	1,863,689

________________

(1) Time deposits excluded from fair value measurements.

KLA-Tencor’s investment portfolio consists of both corporate and government securities that have a maximum maturity of three years. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As yields increase, those securities with a lower yield-at-cost show a mark-to-market unrealized loss. All unrealized losses are due to changes in market interest rates, bond yields and/or credit ratings. The Company believes that it has the ability to realize the full value of all of these investments upon maturity. The following table summarizes the fair value and gross unrealized losses of the Company’s investments that were in an unrealized loss position as of the date indicated below:

As of December 31, 2017 (In thousands)	Fair Value		Gross Unrealized Losses(1)
Corporate debt securities	$	792,436	$	(4,245	)
U.S. Treasury securities	404,982		(2,941		)
U.S. Government agency securities	334,064		(2,611		)
Sovereign securities	11,427		(69		)
Total	$	1,542,909	$	(9,866	)

__________________ 

(1) As of December 31, 2017, the amount of total gross unrealized losses related to investments that had been in a continuous loss position for 12 months or more was $5.3 million.

16

The contractual maturities of securities classified as available-for-sale, regardless of their classification on the Company’s Condensed Consolidated Balance Sheet, as of the date indicated below were as follows:

As of December 31, 2017 (In thousands)	Amortized Cost		Fair Value
Due within one year	$	521,930	$	520,623
Due after one year through three years	1,172,512		1,164,173
	$	1,694,442	$	1,684,796

Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Realized gains and losses on available-for-sale securities for the three and six months ended December 31, 2017 and 2016 were immaterial.

NOTE 5 - BUSINESS COMBINATION

On June 9, 2017, the Company completed the acquisition of the outstanding shares of a privately-held company that designs and manufactures optical profilers and inspection systems for advanced semiconductor packaging, LED and data storage industries, for total purchase consideration of $37.1 million, inclusive of post-closing working capital adjustments. The remaining acquisition holdback amount of $4.8 million was paid during the three months ended December 31, 2017. The primary reason for the acquisition is to expand the Company’s portfolio of products.

The following table represents the preliminary purchase price allocation and summarizes the aggregate estimated fair value of the net assets acquired, including a post-closing working capital adjustment:

(In thousands)	Preliminary Purchase Price Allocation
Intangible assets	$	17,660
Goodwill	14,764
Assets acquired (including cash and marketable securities of $3.2 million)	5,981
Liabilities assumed	(1,334		)
Fair value of net assets acquired	$	37,071

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired. The $14.8 million of goodwill was assigned to the Global Service and Support (“GSS”), and the Other reporting units. None of the goodwill recognized is deductible for income tax purposes.

NOTE 6 – GOODWILL AND PURCHASED INTANGIBLE ASSETS

Goodwill

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in prior business combinations. The Company has four reporting units: Wafer Inspection, Patterning, Global Service and Support, and Others. The following table presents goodwill balances and the movements by reporting unit during the six months ended December 31, 2017:

(In thousands)	Wafer Inspection		Patterning		GSS		Others		Total
Balance as of June 30, 2017	$	281,095	$	53,255	$	2,856	$	12,320	$	349,526
Foreign currency and other adjustments	13		—		97		387		497
Balance as of December 31, 2017	$	281,108	$	53,255	$	2,953	$	12,707	$	350,023

Goodwill is net of accumulated impairment losses of $277.6 million, which were recorded prior to the fiscal year ended June 30, 2014.

17

The Company performed a qualitative assessment of the goodwill by reporting unit as of November 30, 2017 during the three months ended December 31, 2017 as part of its annual goodwill impairment assessment and concluded that it was more likely than not that the fair value of each of the reporting units exceeded its carrying amount. As a result of the Company’s determination following its qualitative assessment, it was not necessary to perform the quantitative goodwill impairment test at this time. In assessing the qualitative factors, the Company considered the impact of key factors, including changes in the industry and competitive environment, market capitalization, stock price, earnings multiples, budgeted-to-actual revenue performance from prior year, gross margin and cash flows from operating activities.

Based on the Company’s assessment, goodwill in the reporting units was not impaired as of December 31, 2017 or June 30, 2017.

Purchased Intangible Assets

The components of purchased intangible assets as of the dates indicated below were as follows:

(In thousands)		As of December 31, 2017						As of June 30, 2017
Category	Range of Useful Lives	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Amount		Gross Carrying Amount		Accumulated Amortization and Impairment		Net Amount
Existing technology	4-7 years	$	157,259	$	142,459	$	14,800	$	157,259	$	140,346	$	16,913
Trade name/Trademark	7 years	20,993		19,981		1,012		20,993		19,902		1,091
Customer relationships	7-8 years	55,680		55,036		644		55,680		54,959		721
Backlog	<1 year	260		153		107		260		22		238
Total		$	234,192	$	217,629	$	16,563	$	234,192	$	215,229	$	18,963

Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable.

For the three months ended December 31, 2017 and 2016, amortization expense for purchased intangible assets was $1.2 million and $0.5 million, respectively. For the six months ended December 31, 2017 and 2016, amortization expense for purchased intangible assets was $2.4 million and $1.8 million, respectively. Based on the intangible assets recorded as of December 31, 2017, and assuming no subsequent additions to, or impairment of, the underlying assets, the remaining estimated amortization expense is expected to be as follows:

Fiscal year ending June 30:	Amortization (In thousands)
2018 (remaining 6 months)	$	1,851
2019	2,486
2020	2,486
2021	2,486
2022	2,486
Thereafter	4,768
Total	$	16,563

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NOTE 7 – DEBT

The following table summarizes the debt of the Company as of December 31, 2017 and June 30, 2017:

	As of December 31, 2017					As of June 30, 2017
	Amount (In thousands)			Effective Interest Rate		Amount (In thousands)			Effective Interest Rate
Fixed-rate 2.375% Senior notes due on November 1, 2017	$	—		—	%	$	250,000		2.396	%
Fixed-rate 3.375% Senior notes due on November 1, 2019	250,000			3.377	%	250,000			3.377	%
Fixed-rate 4.125% Senior notes due on November 1, 2021	500,000			4.128	%	500,000			4.128	%
Fixed-rate 4.650% Senior notes due on November 1, 2024(1)	1,250,000			4.682	%	1,250,000			4.682	%
Fixed-rate 5.650% Senior notes due on November 1, 2034	250,000			5.670	%	250,000			5.670	%
Term loans	—			—	%	446,250			2.137	%
Revolving Credit Facility	250,000			2.634	%	—			—	%
Total debt	2,500,000					2,946,250
Unamortized discount	(2,704		)			(2,901		)
Unamortized debt issuance costs	(10,870		)			(12,892		)
Total debt	$	2,486,426				$	2,930,457
Reported as:
Current portion of long-term debt	$	—				$	249,983
Long-term debt	2,486,426					2,680,474
Total debt	$	2,486,426				$	2,930,457

__________________ 

(1) The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.

As of December 31, 2017, future principal payments for the debt are summarized as follows:

Fiscal year ending June 30:	Amount (In thousands)
2018 (remaining 6 months)	$	—
2019	—
2020	250,000
2021	—
2022	500,000
Thereafter	1,750,000
Total payments	$	2,500,000

19

Senior Notes:

In November 2014, the Company issued $2.50 billion aggregate principal amount of senior, unsecured long-term notes (collectively referred to as “Senior Notes”). The Company issued the Senior Notes as part of the leveraged recapitalization plan under which the proceeds from the Senior Notes in conjunction with the proceeds from the term loans (described below) and cash on hand were used (x) to fund a special cash dividend of $16.50 per share, aggregating to approximately $2.76 billion, (y) to redeem $750.0 million of 2018 Senior Notes, including associated redemption premiums, accrued interest and other fees and expenses and (z) for other general corporate purposes, including repurchases of shares pursuant to the Company’s stock repurchase program. The interest rate specified for each series of the Senior Notes will be subject to adjustments from time to time if Moody’s Investor Service, Inc. (“Moody’s”) or Standard & Poor’s Ratings Services (“S&P”) or, under certain circumstances, a substitute rating agency selected by us as a replacement for Moody’s or S&P, as the case may be (a “Substitute Rating Agency”), downgrades (or subsequently upgrades) its rating assigned to the respective series of Senior Notes such that the adjusted rating is below investment grade. If the adjusted rating of any series of Senior Notes from Moody’s (or, if applicable, any Substitute Rating Agency) is decreased to Ba1, Ba2, Ba3 or B1 or below, the stated interest rate on such series of Senior Notes as noted above will increase by 25 bps, 50 bps, 75 bps or 100 bps, respectively (“bps” refers to Basis Points and 1% is equal to 100 bps). If the rating of any series of Senior Notes from S&P (or, if applicable, any Substitute Rating Agency) with respect to such series of Senior Notes is decreased to BB+, BB, BB- or B+ or below, the stated interest rate on such series of Senior Notes as noted above will increase by 25 bps, 50 bps, 75 bps or 100 bps, respectively. The interest rates on any series of Senior Notes will permanently cease to be subject to any adjustment (notwithstanding any subsequent decrease in the ratings by any of Moody’s, S&P and, if applicable, any Substitute Rating Agency) if such series of Senior Notes becomes rated “Baa1” (or its equivalent) or higher by Moody’s (or, if applicable, any Substitute Rating Agency) and “BBB+” (or its equivalent) or higher by S&P (or, if applicable, any Substitute Rating Agency), or one of those ratings if rated by only one of Moody’s, S&P and, if applicable, any Substitute Rating Agency, in each case with a stable or positive outlook. In October 2014, the Company entered into a series of forward contracts to lock the 10-year treasury rate (“benchmark rate”) on a portion of the Senior Notes with a notional amount of $1.00 billion in aggregate. For additional details, refer to Note 14, “Derivative Instruments and Hedging Activities.”

The original discount on the Senior Notes amounted to $4.0 million and is being amortized over the life of the debt. Interest is payable semi-annually on May 1 and November 1 of each year. The debt indenture (the “Indenture”) includes covenants that limit the Company’s ability to grant liens on its facilities and enter into sale and leaseback transactions, subject to certain allowances under which certain sale and leaseback transactions are not restricted.

In certain circumstances involving a change of control followed by a downgrade of the rating of a series of Senior Notes by at least two of Moody’s, S&P and Fitch Inc., unless the Company has exercised its right to redeem the Senior Notes of such series, the Company will be required to make an offer to repurchase all or, at the holder’s option, any part, of each holder’s Senior Notes of that series pursuant to the offer described below (the “Change of Control Offer”). In the Change of Control Offer, the Company will be required to offer payment in cash equal to 101% of the aggregate principal amount of Senior Notes repurchased plus accrued and unpaid interest, if any, on the Senior Notes repurchased, up to, but not including, the date of repurchase.

In November 2017, the Company repaid $250.0 million of Senior Notes at maturity. Based on the trading prices of the Senior Notes on the applicable dates, the fair value of the Senior Notes as of December 31, 2017 and June 30, 2017 was approximately $2.41 billion and $2.67 billion, respectively. While the Senior Notes are recorded at cost, the fair value of the long-term debt was determined based on quoted prices in markets that are not active; accordingly, the long-term debt is categorized as Level 2 for purposes of the fair value measurement hierarchy.

As of December 31, 2017, the Company was in compliance with all of its covenants under the Indenture associated with the Senior Notes.

20

Credit Facility (Term Loans and Unfunded Revolving Credit Facility) and Revolving Credit Facility:

In November 2014, the Company entered into $750.0 million of five-year senior unsecured prepayable term loans and a $500.0 million unfunded revolving credit facility (collectively, the “Credit Facility”).

In November 2017, the Company entered into a Credit Agreement (the “Credit Agreement”) providing for a $750.0 millionfive-year unsecured revolving credit facility (the “Revolving Credit Facility”), which replaced its prior Credit Facility. Subject to the terms of the Credit Agreement, the Revolving Credit Facility may be increased in an amount up to $250.0 million in the aggregate. As of December 31, 2017 after giving effect to the borrowings made on the closing date, the Company had outstanding $250.0 million aggregate principal amount of borrowings under the Revolving Credit Facility. The proceeds from the borrowings on the closing date, together with the cash on hand was used to pay in full the remaining term loan balance under the Credit Facility.

The Company may borrow, repay and reborrow funds under the Revolving Credit Facility until its maturity on November 30, 2022 (the “Maturity Date”), at which time such Revolving Credit Facility will terminate, and all outstanding loans under such facility, together with all accrued and unpaid interest, must be repaid. The Company may prepay the Revolving Credit Facility at any time without a prepayment penalty.

Borrowings under the Revolving Credit Facility will bear interest, at the Company’s option, at either: (i) the Alternative Base Rate (“ABR”) plus a spread, which ranges from 0 bps to 75 bps, or (ii) the London Interbank Offered Rate (“LIBOR”) plus a spread, which ranges from 100 bps to175 bps. The spreads under ABR and LIBOR are subject to adjustment in conjunction with credit rating downgrades or upgrades. The Company is also obligated to pay an annual commitment fee on the daily undrawn balance of the Revolving Credit Facility, which ranges from 10 bps to 25 bps, subject to an adjustment in conjunction with changes to the Company’s credit rating. As of December 31, 2017, the Company elected to pay interest on the borrowed amount under the Revolving Credit Facility at LIBOR plus a spread of 125 bps, and an annual commitment fee of 15 bps on the daily undrawn balance of the Revolving Credit Facility.

The Revolving Credit Facility requires the Company to maintain an interest expense coverage ratio as described in the Credit Agreement, on a quarterly basis, covering the trailing four consecutive fiscal quarters of no less than 3.50 to 1.00. In addition, the Company is required to maintain the maximum leverage ratio as described in the Credit Agreement, on a quarterly basis of 3.00 to 1.00, covering the trailing four consecutive fiscal quarters for each fiscal quarter, which can be increased to 4.00 to 1.00 for a period of time in connection with a material acquisition or a series of material acquisitions.

The Company was in compliance with all covenants under the Credit Agreement as of December 31, 2017.

NOTE 8 – EQUITY AND LONG-TERM INCENTIVE COMPENSATION PLANS

Equity Incentive Program

As of December 31, 2017, the Company had two plans under which the Company was able to issue equity incentive awards, such as restricted stock units and stock options, to its employees, consultants and members of its Board of Directors: the 2004 Equity Incentive Plan (the “2004 Plan”) and the 1998 Director Plan (the “Outside Director Plan”).

2004 Plan:

The 2004 Plan provides for the grant of options to purchase shares of the Company’s common stock, stock appreciation rights, restricted stock units, performance shares, performance units and deferred stock units to the Company’s employees, consultants and members of its Board of Directors. As of December 31, 2017, 2.5 million shares were available for issuance under the 2004 Plan.

Any 2004 Plan awards of restricted stock units, performance shares, performance units or deferred stock units with a per share or unit purchase price lower than 100% of fair market value on the grant date are counted against the total number of shares issuable under the 2004 Plan as follows, based on the grant date of the applicable award: (a) for any such awards granted before November 6, 2013, the awards counted against the 2004 Plan share reserve as 1.8 shares for every one share subject thereto; and (b) for any such awards granted on or after November 6, 2013, the awards count against the 2004 Plan share reserve as 2.0 shares for every one share subject thereto.

In addition, the plan administrator has the ability to grant “dividend equivalent” rights in connection with awards of restricted stock units, performance shares, performance units and deferred stock units before they are fully vested. The plan administrator, at its discretion, may grant a right to receive dividends on the aforementioned awards which may be settled in cash or Company stock at the discretion of the plan administrator subject to meeting the vesting requirement of the underlying awards.

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Outside Director Plan

The Outside Director Plan only permits the issuance of stock options to the non-employee members of the Board of Directors. As of December 31, 2017, 1.7 million shares were available for grant under the Outside Director Plan.

Equity Incentive Plans - General Information

The following table summarizes the combined activity under the Company’s equity incentive plans for the indicated periods:

(In thousands)	Available For Grant(1)
Balance as of June 30, 2017	4,710
Restricted stock units granted (2)	(665	)
Restricted stock units granted adjustment (3)	33
Restricted stock units canceled	59
Balance as of December 31, 2017	4,137

__________________ 

(1) The number of restricted stock units reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).

(2) Includes restricted stock units granted to senior management during the six months ended December 31, 2017 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units granted during the six months ended December 31, 2017, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.3 million shares for the six months ended December 31, 2017 reflects the application of the multiplier described above).

(3) Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the six months ended December 31, 2017.

The fair value of stock-based awards is measured at the grant date and is recognized as an expense over the employee’s requisite service period. For restricted stock units granted without “dividend equivalent” rights, fair value is calculated using the closing price of the Company’s common stock on the grant date, adjusted to exclude the present value of dividends which are not accrued on those restricted stock units. The fair value for restricted stock units granted with “dividend equivalent” rights is determined using the closing price of the Company’s common stock on the grant date. As of December 31, 2017, the Company accrued $7.6 million of dividends payable, which included both a special cash dividend and regular quarterly cash dividends for the unvested restricted stock units outstanding as of the dividend record date. The fair value for purchase rights under the Company’s Employee Stock Purchase Plan is determined using a Black-Scholes valuation model.

The following table shows pre-tax stock-based compensation expense for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Stock-based compensation expense by:
Costs of revenues	$	1,656	$	1,305	$	3,072	$	2,567
Research and development	2,275		2,052		4,446		4,073
Selling, general and administrative	9,808		9,087		20,252		17,282
Total stock-based compensation expense	$	13,739	$	12,444	$	27,770	$	23,922

The following table shows stock-based compensation capitalized as inventory as of the dates indicated below:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Inventory	$	3,039	$	2,820

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Restricted Stock Units

The following table shows the applicable number of restricted stock units and weighted-average grant date fair value for restricted stock units granted, vested and released, withheld for taxes, and forfeited during the six months ended December 31, 2017 and restricted stock units outstanding as of December 31, 2017 and June 30, 2017:

Restricted Stock Units	Shares(1) (In thousands)		Weighted-Average Grant Date Fair Value
Outstanding restricted stock units as of June 30, 2017(2)	2,241		$	68.24
Granted(2)	333		$	91.39
Granted adjustments(3)	(17	)	$	74.26
Vested and released	(379	)	$	63.22
Withheld for taxes	(283	)	$	63.22
Forfeited	(30	)	$	66.10
Outstanding restricted stock units as of December 31, 2017(2)	1,865		$	74.13

__________________ 

(1) Share numbers reflect actual shares subject to awarded restricted stock units. As described above, under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.

(2) Includes restricted stock units granted to senior management with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units, reported at the maximum possible number of shares (0.3 million shares for the fiscal year ended June 30, 2016, 42 thousand shares for the fiscal year ended June 30, 2017 and 0.2 million shares for the six months ended December 31, 2017) that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied.

(3) Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during six months ended December 31, 2017.

The restricted stock units granted by the Company generally vest (a) with respect to awards with only service-based vesting criteria, in three or four equal installments and (b) with respect to awards with both performance-based and service-based vesting criteria, in two equal installments on the third and fourth anniversaries of the grant date, in each case subject to the recipient remaining employed by the Company as of the applicable vesting date. The restricted stock units granted to the independent members of the board of directors vest annually. 

The following table shows the weighted-average grant date fair value per unit for the restricted stock units granted and the restricted stock units vested and tax benefits realized by the Company in connection with vested and released restricted stock units for the indicated periods:

	Three months ended December 31,					Six months ended December 31,
(In thousands, except for weighted-average grant date fair value)	2017			2016		2017		2016
Weighted-average grant date fair value per unit	$	105.15		$	75.38	$	91.39	$	70.95
Grant date fair value of vested restricted stock units	$	5,322		$	1,843	$	41,856	$	31,051
Tax benefits (expense) realized by the Company in connection with vested and released restricted stock units	$	(1,930	)	$	765	$	16,482	$	14,694

As of December 31, 2017, the unrecognized stock-based compensation expense balance related to restricted stock units was $104.8 million, excluding the impact of estimated forfeitures, and will be recognized over a weighted-average remaining contractual term and an estimated weighted-average amortization period of 1.6 years. The intrinsic value of outstanding restricted stock units as of December 31, 2017 was $196.0 million.

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Cash-Based Long-Term Incentive Compensation

The Company has adopted a cash-based long-term incentive (“Cash LTI”) program for many of its employees as part of the Company’s employee compensation program. During the six months ended December 31, 2017 and 2016, the Company approved Cash LTI awards of $4.0 million and $50.3 million, respectively under the Company’s Cash Long-Term Incentive Plan (“Cash LTI Plan”). The Company changed the timing of its annual grants for its employees resulting in the Cash LTI awards being lower during the six months ended December 31, 2017 compared to the six months ended December 31, 2016. Cash LTI awards issued to employees under the Cash LTI Plan will vest in three or four equal installments, with one-third or one-fourth of the aggregate amount of the Cash LTI award vesting on each anniversary of the grant date over a three or four-year period. In order to receive payments under a Cash LTI award, participants must remain employed by the Company as of the applicable award vesting date. Executives and non-employee Board members are not participating in this program. During the three months ended December 31, 2017 and 2016, the Company recognized $11.5 million and $11.2 million, respectively, in compensation expense under the Cash LTI Plan. During the six months ended December 31, 2017 and 2016, the Company recognized $26.3 million and $23.4 million, respectively, in compensation expense under the Cash LTI Plan. As of December 31, 2017, the unrecognized compensation balance (excluding the impact of estimated forfeitures) related to the Cash LTI Plan was $102.4 million.

Employee Stock Purchase Plan

KLA-Tencor’s Employee Stock Purchase Plan (“ESPP”) provides that eligible employees may contribute up to 10% of their eligible earnings toward the semi-annual purchase of KLA-Tencor’s common stock. Effective January 2, 2018, eligible employees may contribute up to 15% of their eligible earnings. The ESPP is qualified under Section 423 of the Internal Revenue Code. The employee’s purchase price is derived from a formula based on the closing price of the common stock on the first day of the offering period versus the closing price on the date of purchase (or, if not a trading day, on the immediately preceding trading day).

The offering period (or length of the look-back period) under the ESPP has a duration of six months, and the purchase price with respect to each offering period beginning on or after such date is, until otherwise amended, equal to 85% of the lesser of (i) the fair market value of the Company’s common stock at the commencement of the applicable six-month offering period or (ii) the fair market value of the Company’s common stock on the purchase date. The Company estimates the fair value of purchase rights under the ESPP using a Black-Scholes valuation model.

The fair value of each purchase right under the ESPP was estimated on the date of grant using the Black-Scholes option valuation model and the straight-line attribution approach with the following weighted-average assumptions:

	Three months ended December 31,				Six months ended December 31,
	2017		2016		2017		2016
Stock purchase plan:
Expected stock price volatility	25.9	%	20.6	%	25.9	%	20.6	%
Risk-free interest rate	0.9	%	0.4	%	0.9	%	0.4	%
Dividend yield	2.6	%	3.0	%	2.6	%	3.0	%
Expected life (in years)	0.5		0.5		0.5		0.5

The following table shows the tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP and the weighted-average fair value per share for the indicated periods:

(In thousands, except for weighted-average fair value per share)	Three months ended December 31,				Six months ended December 31,
	2017		2016		2017		2016
Total cash received from employees for the issuance of shares under the ESPP	$	20,579	$	23,694	$	20,579	$	23,694
Number of shares purchased by employees through the ESPP	264		384		264		384
Tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP	$	47	$	218	$	894	$	922
Weighted-average fair value per share based on Black-Scholes model	$	19.04	$	14.05	$	19.04	$	14.05

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The ESPP shares are replenished annually on the first day of each fiscal year by virtue of an evergreen provision. The provision allows for share replenishment equal to the lesser of 2.0 million shares or the number of shares which KLA-Tencor estimates will be required to be issued under the ESPP during the forthcoming fiscal year. As of December 31, 2017, a total of 2.4 million shares were reserved and available for issuance under the ESPP.

Quarterly cash dividends

On November 1, 2017, the Company’s Board of Directors declared a regular quarterly cash dividend of $0.59 per share on the outstanding shares of the Company’s common stock, which was paid on December 1, 2017 to the stockholders of record as of the close of business on November 15, 2017. The total amount of regular quarterly cash dividends and dividend equivalents paid by the Company during the three months ended December 31, 2017 and 2016 was $92.6 million and $84.5 million, respectively. The total amount of regular quarterly cash dividends and dividend equivalents paid by the Company during the six months ended December 31, 2017 and 2016 was $186.7 million and $166.1 million, respectively.The amount of accrued dividends payable for regular quarterly cash dividends on unvested restricted stock units with dividend equivalent rights as of December 31, 2017 and June 30, 2017 was $4.8 million and $4.8 million, respectively. These amounts will be paid upon vesting of the underlying restricted stock units.

Special cash dividend

On November 19, 2014, the Company’s Board of Directors declared a special cash dividend of $16.50 per share on our outstanding common stock, which was paid on December 9, 2014 to the stockholders of record as of the close of business on December 1, 2014. The declaration and payment of the special cash dividend was part of the Company’s leveraged recapitalization transaction under which the special cash dividend was financed through a combination of existing cash and proceeds from the debt financing disclosed in Note 7, “Debt” that was completed during the three months ended December 31, 2014. As of the declaration date, the total amount of the special cash dividend accrued by the Company was approximately $2.76 billion, substantially all of which was paid out during the three months ended December 31, 2014, except for the aggregate special cash dividend of $43.0 million that was accrued for the unvested restricted stock units. As of December 31, 2017 and June 30, 2017, the Company had a total of $2.8 million and $9.0 million, respectively, of accrued dividends payable for the special cash dividend with respect to outstanding unvested restricted stock units, which will be paid when such underlying unvested restricted stock units vest. During the three months ended December 31, 2017 and 2016, the total special cash dividends paid with respect to vested restricted stock units were immaterial. During the six months ended December 31, 2017 and 2016, the total special cash dividends paid with respect to vested restricted stock units were $6.2 million and $7.7 million, respectively. Other than the special cash dividend declared during the three months ended December 31, 2014, the Company historically has not declared any special cash dividend.

NOTE 9 – STOCK REPURCHASE PROGRAM

The Company’s Board of Directors has authorized a program for the Company to repurchase shares of the Company’s common stock. The intent of this program is to offset the dilution from KLA-Tencor’s equity incentive plans and employee stock purchase plan, as well as to return excess cash to the Company’s stockholders. Subject to market conditions, applicable legal requirements and other factors, the repurchases were made in the open market in compliance with applicable securities laws, including the Securities Exchange Act of 1934 and the rules promulgated thereunder, such as Rule 10b-18 and Rule 10b5-1. As of December 31, 2017, an aggregate of approximately 4.9 million shares were available for repurchase under the Company’s repurchase program.

Share repurchases for the indicated periods (based on the trade date of the applicable repurchase) were as follows:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Number of shares of common stock repurchased	388		—		822		—
Total cost of repurchases	$	40,868	$	—	$	81,643	$	—

As of December 31, 2017, the Company had repurchased 12 thousand shares for $1.3 million, which repurchases had not settled prior to December 31, 2017. The amount was recorded as a component of other current liabilities for the period presented.

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NOTE 10 – NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is calculated by dividing net income (loss) available to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is calculated by using the weighted-average number of common shares outstanding during the period, increased to include the number of additional shares of common stock that would have been outstanding if the shares of common stock underlying the Company’s outstanding dilutive restricted stock units and stock options had been issued. The dilutive effect of outstanding restricted stock units and options is reflected in diluted net income per share by application of the treasury stock method. The dilutive securities are excluded from the computation of diluted net loss per share when a net loss is recorded for the period as their effect would be anti-dilutive.

The following table sets forth the computation of basic and diluted net income (loss) per share:

(In thousands, except per share amounts)	Three months ended December 31,					Six months ended December 31,
	2017			2016		2017		2016
Numerator:
Net income (loss)	$	(134,319	)	$	238,251	$	146,617	$	416,352
Denominator:
Weighted-average shares-basic, excluding unvested restricted stock units	156,587			156,335		156,707		156,232
Effect of dilutive restricted stock units and options(1)	—			788		981		839
Weighted-average shares-diluted	156,587			157,123		157,688		157,071
Basic net income (loss) per share	$	(0.86	)	$	1.52	$	0.94	$	2.66
Diluted net income (loss) per share	$	(0.86	)	$	1.52	$	0.93	$	2.65
Anti-dilutive securities excluded from the computation of diluted net income per share	—			2		—		56

__________________

(1) The Company has not had any outstanding stock options since August 2016.

NOTE 11 – INCOME TAXES

The following table provides details of income taxes:

	Three months ended December 31,						Six months ended December 31,
(Dollar amounts in thousands)	2017			2016			2017			2016
Income before income taxes	$	347,307		$	306,845		$	683,459		$	529,065
Provision for income taxes	$	481,626		$	68,594		$	536,842		$	112,713
Effective tax rate	138.7		%	22.4		%	78.5		%	21.3		%

The Company’s effective tax rate during the three and six months ended December 31, 2017 was impacted by the Tax Cuts and Jobs Act (“the Act”), which was enacted into law on December 22, 2017.  Income tax effects resulting from changes in tax laws are accounted for by the Company in accordance with the authoritative guidance, which requires that these tax effects be recognized in the period in which the law is enacted and the effects are recorded as a component of provision for income taxes from continuing operations. As a result, the Company made an additional provision for income tax resulting from the enactment of the Act during the three and six months ended December 31, 2017.

The Act includes significant changes to the U.S. corporate income tax system which reduces the U.S. federal corporate tax rate from 35.0% to 21.0% as of January 1, 2018; shifts to a modified territorial tax regime which requires companies to pay a transition tax on earnings of certain foreign subsidiaries that were previously tax deferred; and creates new taxes on certain foreign-sourced earnings. The decrease in the U.S. federal corporate tax rate from 35.0% to 21.0% results in a blended statutory tax rate of 28.1% for the fiscal year ending June 30, 2018. The new taxes for certain foreign-sourced earnings under the Act are effective for the Company after the fiscal year ending June 30, 2018.

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Provision for income taxes increased by $413.0 million and $424.1 million during the three and six months ended December 31, 2017, respectively, primarily due to: (i) a transition tax of $340.9 million on the Company’s total post-1986 earnings and profits (“E&P”) which, prior to the enactment of the Act, was previously deferred from U.S. income taxes; and (ii) a $101.1 million increase in income tax expense as a result of the re-measurement of the Company’s deferred tax assets and liabilities based on the Act’s new corporate tax rate of 21.0%. The increase in provision for income taxes during the three and six months ended December 31, 2017 was partially offset by a decrease of $25.0 million relating to the reduction of the U.S. federal corporate tax rate from 35.0% to 28.1% for the fiscal year ending June 30, 2018. The amounts resulting from the transition tax are payable over a period of up to eight years.

As of December 31, 2017, the Company had not fully completed its accounting for the tax effects of the enactment of the Act. The Company’s provision for income taxes for the three and six months ended December 31, 2017 is based in part on a reasonable estimate of the effects on its transition tax and existing deferred tax balances. For the amounts which the Company was able to reasonably estimate, the Company recognized a provisional tax amount of $442.0 million, which is included as a component of provision for income taxes from continuing operations. The components of the provisional tax amounts are as follows:

• The Company recorded a provisional tax amount of $340.9 million for the transition tax liability. The Company has not yet completed the calculation of the total post-1986 foreign E&P and the income tax pools for all foreign subsidiaries. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when the Company finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. In addition, further interpretations from U.S. federal and state governments and regulatory organizations may change the provisional tax liability or the accounting treatment of the provisional tax liability.

• The Company recorded a provisional tax amount of $101.1 million to re-measure certain deferred tax assets and liabilities as a result of the enactment of the Act. The Company is still analyzing certain aspects of the Act and refining the estimate of the expected reversal of its deferred tax balances. This can potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts.

The Act also includes provisions for Global Intangible Low-Taxed Income (“GILTI”) wherein taxes on foreign income are imposed in excess of a deemed return on tangible assets of foreign corporations. This income will effectively be taxed at a 10.5% tax rate in general. As a result, the Company’s deferred tax assets and liabilities are being evaluated if the deferred tax assets and liabilities should be recognized for the basis differences expected to reverse as a result of GILTI provisions that are effective for the Company after the fiscal year ending June 30, 2018, or should the tax on GILTI provisions be recognized in the period the Act was signed into law. Because of the complexity of the new provisions, the Company is continuing to evaluate on how the provisions will be accounted for under the U.S. generally accepted accounting principles wherein companies are allowed to make an accounting policy election of either (i) account for GILTI as a component of tax expense in the period in which the Company is subject to the rules (the “period cost method”), or (ii) account for GILTI in the Company’s measurement of deferred taxes (the “deferred method”). Currently, the Company has not elected a method and will only do so after its completion of the analysis of the GILTI provisions and its election method will depend, in part, on analyzing its global income to determine whether the Company expects to have future U.S. inclusions in its taxable income related to GILTI and, if so, the impact that is expected.

In the normal course of business, the Company is subject to examination by tax authorities throughout the world. The Company is subject to United States federal income tax examination for all years beginning from the fiscal year ended June 30, 2014. The Company is subject to state income tax examinations for all years beginning from the fiscal year ended June 30, 2013. The Company is also subject to examinations in other major foreign jurisdictions, including Singapore, for all years beginning from the fiscal year ended June 30, 2013.

It is possible that certain examinations may be concluded in the next twelve months. The Company believes that it may recognize up to $12.6 million of its existing unrecognized tax benefits within the next twelve months as a result of the lapse of statutes of limitations and the resolution of examinations with various tax authorities.

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NOTE 12 – LITIGATION AND OTHER LEGAL MATTERS

The Company is named from time to time as a party to lawsuits and other types of legal proceedings and claims in the normal course of its business. Actions filed against the Company include commercial, intellectual property, customer, and labor and employment related claims, including complaints of alleged wrongful termination and potential class action lawsuits regarding alleged violations of federal and state wage and hour and other laws. In general, legal proceedings and claims, regardless of their merit, and associated internal investigations (especially those relating to intellectual property or confidential information disputes) are often expensive to prosecute, defend or conduct and may divert management’s attention and other company resources. Moreover, the results of legal proceedings are difficult to predict, and the costs incurred in litigation can be substantial, regardless of outcome. The Company believes the amounts provided in its condensed consolidated financial statements are adequate in light of the probable and estimated liabilities. However, because such matters are subject to many uncertainties, the ultimate outcomes are not predictable, and there can be no assurances that the actual amounts required to satisfy alleged liabilities from the matters described above will not exceed the amounts reflected in the Company’s condensed consolidated financial statements or will not have a material adverse effect on its results of operations, financial condition or cash flows.

NOTE 13 – COMMITMENTS AND CONTINGENCIES

Factoring. KLA-Tencor has agreements (referred to as “factoring agreements”) with financial institutions to sell certain of its trade receivables and promissory notes from customers without recourse. The Company does not believe it is at risk for any material losses as a result of these agreements. In addition, the Company periodically sells certain letters of credit (“LCs”), without recourse, received from customers in payment for goods and services.

The following table shows total receivables sold under factoring agreements and proceeds from sales of LCs for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Receivables sold under factoring agreements	$	47,232	$	28,242	$	79,133	$	84,975
Proceeds from sales of LCs	$	—	$	9,740	$	5,571	$	13,148

Factoring and LC fees for the sale of certain trade receivables were recorded in other expense (income), net and were not material for the periods presented.

Facilities. KLA-Tencor leases certain of its facilities under arrangements that are accounted for as operating leases. Rent expense was $2.5 million and $2.4 million for the three months ended December 31, 2017 and 2016, respectively and was $5.0 million and $4.8 million for the six months ended December 31, 2017 and 2016, respectively.

The following is a schedule of expected operating lease payments:

Fiscal year ending June 30,	Amount (In thousands)
2018 (remaining 6 months)	$	10,063
2019	7,478
2020	6,031
2021	4,561
2022	2,534
2023 and thereafter	4,551
Total minimum lease payments	$	35,218

Purchase Commitments. KLA-Tencor maintains commitments to purchase inventory from its suppliers as well as goods and services in the ordinary course of business. The Company’s liability under these purchase commitments is generally restricted to a forecasted time-horizon as mutually agreed upon between the parties. This forecasted time-horizon can vary among different suppliers. The Company’s estimate of its significant purchase commitments is approximately $481.0 million as of December 31, 2017 which are primarily due within the next 12 months. Actual expenditures will vary based upon the volume of the transactions and length of contractual service provided. In addition, the amounts paid under these arrangements may be less in the event that the arrangements are renegotiated or canceled. Certain agreements provide for potential cancellation penalties.

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Cash Long-Term Incentive Plan. As of December 31, 2017, the Company had committed $120.2 million for future payment obligations under its Cash LTI Plan. The calculation of compensation expense related to the Cash LTI Plan includes estimated forfeiture rate assumptions. Cash LTI awards issued to employees under the Cash LTI Plan vest in three or four equal installments, with one-third or one-fourth of the aggregate amount of the Cash LTI award vesting on each yearly anniversary of the grant date over a three or four-year period. In order to receive payments under a Cash LTI award, participants must remain employed by the Company as of the applicable award vesting date.

Warranties, Guarantees and Contingencies. KLA-Tencor provides standard warranty coverage on its systems for 40 hours per week for 12 months, providing labor and parts necessary to repair and maintain the systems during the warranty period. The Company accounts for the estimated warranty cost as a charge to costs of revenues when revenue is recognized. The estimated warranty cost is based on historical product performance and field expenses. Utilizing actual service records, the Company calculates the average service hours and parts expense per system and applies the actual labor and overhead rates to determine the estimated warranty charge. The Company updates these estimated charges on a regular basis. The actual product performance and/or field expense profiles may differ, and in those cases the Company adjusts its warranty accruals accordingly.

The following table provides the changes in the product warranty accrual for the indicated periods:

	Three months ended December 31,						Six months ended December 31,
(In thousands)	2017			2016			2017			2016
Beginning balance	$	46,439		$	36,967		$	45,458		$	34,773
Accruals for warranties issued during the period	13,951			13,191			27,047			24,093
Changes in liability related to pre-existing warranties	(5,254		)	(1,131		)	(7,785		)	(1,576		)
Settlements made during the period	(10,123		)	(8,354		)	(19,707		)	(16,617		)
Ending balance	$	45,013		$	40,673		$	45,013		$	40,673

The Company maintains guarantee arrangements available through various financial institutions for up to $21.8 million, of which $16.0 million had been issued as of December 31, 2017, primarily to fund guarantees to customs authorities for value-added tax (“VAT”) and other operating requirements of the Company’s subsidiaries in Europe and Asia.

KLA-Tencor is a party to a variety of agreements pursuant to which it may be obligated to indemnify the other party with respect to certain matters. Typically, these obligations arise in connection with contracts and license agreements or the sale of assets, under which the Company customarily agrees to hold the other party harmless against losses arising from, or provides customers with other remedies to protect against, bodily injury or damage to personal property caused by the Company’s products, non-compliance with the Company’s product performance specifications, infringement by the Company’s products of third-party intellectual property rights and a breach of warranties, representations and covenants related to matters such as title to assets sold, validity of certain intellectual property rights, non-infringement of third-party rights, and certain income tax-related matters. In each of these circumstances, payment by the Company is typically subject to the other party making a claim to and cooperating with the Company pursuant to the procedures specified in the particular contract.

This usually allows the Company to challenge the other party’s claims or, in case of breach of intellectual property representations or covenants, to control the defense or settlement of any third-party claims brought against the other party. Further, the Company’s obligations under these agreements may be limited in terms of amounts, activity (typically at the Company’s option to replace or correct the products or terminate the agreement with a refund to the other party), and duration. In some instances, the Company may have recourse against third parties and/or insurance covering certain payments made by the Company.

Subject to certain limitations, the Company is obligated to indemnify its current and former directors, officers and employees with respect to certain litigation matters and investigations that arise in connection with their service to the Company. These obligations arise under the terms of the Company’s certificate of incorporation, its bylaws, applicable contracts, and Delaware and California law. The obligation to indemnify generally means that the Company is required to pay or reimburse the individuals’ reasonable legal expenses and possibly damages and other liabilities incurred in connection with these matters.

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In addition, the Company may in limited circumstances enter into agreements that contain customer-specific commitments on pricing, tool reliability, spare parts stocking levels, response time and other commitments. Furthermore, the Company may give these customers limited audit or inspection rights to enable them to confirm that the Company is complying with these commitments. If a customer elects to exercise its audit or inspection rights, the Company may be required to expend significant resources to support the audit or inspection, as well as to defend or settle any dispute with a customer that could potentially arise out of such audit or inspection. To date, the Company has made no significant accruals in its condensed consolidated financial statements for this contingency. While the Company has not in the past incurred significant expenses for resolving disputes regarding these types of commitments, the Company cannot make any assurance that it will not incur any such liabilities in the future.

It is not possible to predict the maximum potential amount of future payments under these or similar agreements due to the conditional nature of the Company’s obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material effect on its business, financial condition, results of operations or cash flows.

NOTE 14 – DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

The authoritative guidance requires companies to recognize all derivative instruments and hedging activities, including foreign currency exchange contracts, as either assets or liabilities at fair value on the balance sheet. Changes in the fair value of derivatives that do not qualify for hedge treatment, as well as the ineffective portion of any hedges, are recognized in other expense (income), net in the condensed consolidated statements of operations. In accordance with the guidance, the Company designates foreign currency forward exchange and option contracts as cash flow hedges of certain forecasted foreign currency denominated sales and purchase transactions.

KLA-Tencor’s foreign subsidiaries operate and sell KLA-Tencor’s products in various global markets. As a result, KLA-Tencor is exposed to risks relating to changes in foreign currency exchange rates. KLA-Tencor utilizes foreign currency forward exchange contracts and option contracts to hedge against future movements in foreign exchange rates that affect certain existing and forecasted foreign currency denominated sales and purchase transactions, such as the Japanese yen, the euro, the New Taiwan dollar and the Israeli new shekel. The Company routinely hedges its exposures to certain foreign currencies with various financial institutions in an effort to minimize the impact of certain currency exchange rate fluctuations. These currency forward exchange contracts and options, designated as cash flow hedges, generally have maturities of less than 18 months. Cash flow hedges are evaluated for effectiveness monthly, based on changes in total fair value of the derivatives. If a financial counterparty to any of the Company’s hedging arrangements experiences financial difficulties or is otherwise unable to honor the terms of the foreign currency hedge, the Company may experience material losses.

For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gains or losses on the derivative is reported as a component of accumulated other comprehensive income (loss) (“OCI”) and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Changes in the fair value of currency forward exchange and option contracts due to changes in time value are excluded from the assessment of effectiveness. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings.

For derivative instruments that are not designated as accounting hedges, gains and losses are recognized in other expense (income), net. The Company uses foreign currency forward contracts to hedge certain foreign currency denominated assets or liabilities. The gains and losses on these derivatives are largely offset by the changes in the fair value of the assets or liabilities being hedged.

In October 2014, in anticipation of the issuance of the Senior Notes, the Company entered into a series of forward contracts (“Rate Lock Agreements”) to lock the benchmark rate on a portion of the Senior Notes. The objective of the Rate Lock Agreements was to hedge the risk associated with the variability in interest rates due to the changes in the benchmark rate leading up to the closing of the intended financing, on the notional amount being hedged. The Rate Lock Agreements had a notional amount of $1.00 billion in aggregate which matured in the second quarter of the fiscal year ended June 30, 2015. The Rate Lock Agreements were terminated on the date of pricing of the $1.25 billion of 4.650% Senior Notes due in 2024 and the Company recorded the fair value of $7.5 million as a gain within accumulated other comprehensive income (loss) as of December 31, 2014. The Company recognized $0.2 million for each of the three months ended December 31, 2017 and 2016 and $0.4 million for each of the six months ended December 31, 2017 and 2016 for the amortization of the gain recognized in accumulated other comprehensive income (loss), which amount reduced the interest expense. As of December 31, 2017, the unamortized portion of the fair value of the forward contracts for the rate lock agreements was $5.2 million.

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Derivatives in Cash Flow Hedging Relationships: Foreign Exchange and Interest Rate Contracts

The locations and amounts of designated and non-designated derivative instruments’ gains and losses reported in the condensed consolidated financial statements for the indicated periods were as follows:

		Three months ended December 31,						Six months ended December 31,
(In thousands)	Location in Financial Statements	2017			2016			2017			2016
Derivatives Designated as Hedging Instruments
Gains (losses) in accumulated OCI on derivatives (effective portion)	Accumulated OCI	$	697		$	13,969		$	1,141		$	12,131
Gains (losses) reclassified from accumulated OCI into income (effective portion):	Revenues	$	397		$	(1,425	)	$	1,365		$	(2,906	)
	Costs of revenues	377			(69		)	1,338			(156		)
	Interest expense	189			189			378			378
	Net gains (losses) reclassified from accumulated OCI into income (effective portion)	$	963		$	(1,305	)	$	3,081		$	(2,684	)
Gains (losses) recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	Other expense (income), net	$	(158	)	$	(1,442	)	$	(229	)	$	(1,453	)
Derivatives Not Designated as Hedging Instruments
Gains (losses) recognized in income	Other expense (income), net	$	3,237		$	5,295		$	3,676		$	5,131

The U.S. dollar equivalent of all outstanding notional amounts of hedge contracts, with maximum remaining maturities of approximately 13 months as of December 31, 2017 and ten months June 30, 2017, respectively, were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Cash flow hedge contracts
Purchase	$	25,923	$	19,305
Sell	$	85,466	$	128,672
Other foreign currency hedge contracts
Purchase	$	144,442	$	165,563
Sell	$	155,260	$	118,504

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The locations and fair value amounts of the Company’s derivative instruments reported in its Condensed Consolidated Balance Sheets as of the dates indicated below were as follows:

	Asset Derivatives					Liability Derivatives
	Balance Sheet  Location	As of December 31, 2017		As of June 30, 2017		Balance Sheet  Location	As of December 31, 2017		As of June 30, 2017
(In thousands)		Fair Value					Fair Value
Derivatives designated as hedging instruments
Foreign exchange contracts	Other current assets	$	1,271	$	2,198	Other current liabilities	$	126	$	72
Total derivatives designated as hedging instruments		$	1,271	$	2,198		$	126	$	72
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other current assets	$	3,203	$	3,733	Other current liabilities	$	289	$	1,203
Total derivatives not designated as hedging instruments		$	3,203	$	3,733		$	289	$	1,203
Total derivatives		$	4,474	$	5,931		$	415	$	1,275

The following table provides the balances and changes in accumulated OCI, before taxes, related to derivative instruments for the indicated periods:

	Three months ended December 31,					Six months ended December 31,
(In thousands)	2017			2016		2017			2016
Beginning balance	$	6,452		$	751	$	8,126		$	1,210
Amount reclassified to income	(963		)	1,305		(3,081		)	2,684
Net change in unrealized gains or losses	697			13,969		1,141			12,131
Ending balance	$	6,186		$	16,025	$	6,186		$	16,025

Offsetting of Derivative Assets and Liabilities

KLA-Tencor presents derivatives at gross fair values in the Condensed Consolidated Balance Sheets. The Company has entered into arrangements with each of its counterparties, which reduce credit risk by permitting net settlement of transactions with the same counterparty under certain conditions. As of December 31, 2017 and June 30, 2017, information related to the offsetting arrangements was as follows (in thousands):

As of December 31, 2017									Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
Description	Gross Amounts of Derivatives			Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets		Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets			Financial Instruments			Cash Collateral Received		Net Amount
Derivatives - Assets	$	4,474		$	—	$	4,474		$	(415	)	$	—	$	4,059
Derivatives - Liabilities	$	(415	)	$	—	$	(415	)	$	415		$	—	$	—

As of June 30, 2017									Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
Description	Gross Amounts of Derivatives			Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets		Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets			Financial Instruments			Cash Collateral Received		Net Amount
Derivatives - Assets	$	5,931		$	—	$	5,931		$	(1,275	)	$	—	$	4,656
Derivatives - Liabilities	$	(1,275	)	$	—	$	(1,275	)	$	1,275		$	—	$	—

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NOTE 15 – RELATED PARTY TRANSACTIONS

During the three and six months ended December 31, 2017 and 2016, the Company purchased from, or sold to, several entities, where one or more executive officers of the Company or members of the Company’s Board of Directors, or their immediate family members, were, during the periods presented, an executive officer or a board member of a subsidiary, including Citrix Systems, Inc., Integrated Device Technology, Inc., Keysight Technologies, Inc., MetLife Insurance K.K., NetApp, Inc., and Proofpoint, Inc. The following table provides the transactions with these parties for the indicated periods (for the portion of such period that they were considered related):

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Total revenues	$	455	$	8	$	457	$	8
Total purchases	$	542	$	226	$	1,246	$	583

The Company’s receivable balances from these parties were $0.5 million as of December 31, 2017 and immaterial as of June 30, 2017. The Company’s payable balance from these parties was immaterial at December 31, 2017 and June 30, 2017. Management believes that such transactions are at arm’s length and on similar terms as would have been obtained from unaffiliated third parties.

NOTE 16 – SEGMENT REPORTING AND GEOGRAPHIC INFORMATION

KLA-Tencor reports one reportable segment in accordance with the provisions of the authoritative guidance for segment reporting. Operating segments are defined as components of an enterprise about which separate financial information is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. KLA-Tencor’s chief operating decision maker is its Chief Executive Officer. The Company is engaged primarily in designing, manufacturing, and marketing process control and yield management solutions for the semiconductor and related nanoelectronics industries.

All operating segments have been aggregated due to their inter-dependencies, commonality of long-term economic characteristics, products and services, the production processes, class of customer and distribution processes. The Company’s service products are an extension of the system product portfolio and provide customers with spare parts and fab management services (including system preventive maintenance and optimization services) to improve yield, increase production uptime and throughput, and lower the cost of ownership. Since the Company operates in one reportable segment, all financial segment information required by the authoritative guidance can be found in the condensed consolidated financial statements.

The Company’s significant operations outside the United States include manufacturing facilities in China, Germany, Israel and Singapore and sales, marketing and service offices in Japan, the rest of the Asia Pacific region and Europe. For geographical revenue reporting, revenues are attributed to the geographic location in which the customer is located. Long-lived assets consist of land, property and equipment, net and are attributed to the geographic region in which they are located.

The following is a summary of revenues by geographic region, based on ship-to location, for the indicated periods (as a percentage of total revenues):

	Three months ended December 31,								Six months ended December 31,
(Dollar amounts in thousands)	2017				2016				2017				2016
Revenues:
Korea	$	270,184	28	%	$	96,846	11	%	$	544,862	28	%	$	231,935	14	%
Taiwan	216,791		22	%	336,058		38	%	355,350		18	%	609,750		37	%
Japan	154,762		16	%	67,855		8	%	301,197		15	%	172,639		11	%
North America	149,042		15	%	153,162		17	%	278,292		14	%	240,428		15	%
Europe & Israel	82,158		8	%	93,440		11	%	165,663		9	%	128,288		8	%
China	66,460		7	%	73,152		9	%	234,799		12	%	158,841		10	%
Rest of Asia	36,425		4	%	56,372		6	%	65,240		4	%	85,677		5	%
Total	$	975,822	100	%	$	876,885	100	%	$	1,945,403	100	%	$	1,627,558	100	%

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The following is a summary of revenues by major products for the indicated periods (as a percentage of total revenues):

	Three months ended December 31,								Six months ended December 31,
(Dollar amounts in thousands)	2017				2016				2017				2016
Revenues:
Wafer Inspection	$	400,584	41	%	$	428,875	49	%	$	790,004	41	%	$	784,736	48	%
Patterning	274,868		28	%	223,796		26	%	569,218		29	%	396,409		24	%
Global Service and Support(1)	273,805		28	%	217,249		24	%	534,303		27	%	425,235		26	%
Other	26,565		3	%	6,965		1	%	51,878		3	%	21,178		2	%
Total	$	975,822	100	%	$	876,885	100	%	$	1,945,403	100	%	$	1,627,558	100	%

__________________ 

(1) The Global Service and Support revenues includes service revenues as presented in the condensed consolidated statements of operations as well as certain product revenues, primarily revenues from the Company’s K-T Pro business.

In the three months ended December 31, 2017, one customer accounted for approximately 17% of total revenues. In the three months ended December 31, 2016, two customers accounted for approximately 31% and 13% of total revenues. In the six months ended December 31, 2017, one customer accounted for approximately 22% of total revenues. In the six months ended December 31, 2016, two customers accounted for approximately 30% and 11% of total revenues. Two customers on an individual basis accounted for greater than 10% of net accounts receivables as of December 31, 2017 and June 30, 2017, respectively.

Long-lived assets by geographic region as of the dates indicated below were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Long-lived assets:
United States	$	186,104	$	191,096
Singapore	41,924		39,118
Israel	28,658		30,182
Europe	13,335		13,300
Rest of Asia	11,613		10,279
Total	$	281,634	$	283,975

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This report contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements other than statements of historical fact may be forward-looking statements. You can identify these and other forward-looking statements by the use of words such as “may,” “will,” “could,” “would,” “should,” “expects,” “plans,” “anticipates,” “relies,” “believes,” “estimates,” “predicts,” “intends,” “potential,” “continue,” “thinks,” “seeks,” or the negative of such terms, or other comparable terminology. Forward-looking statements also include the assumptions underlying or relating to any of the foregoing statements. Such forward-looking statements include, among others, forecasts of the future results of our operations, including profitability; orders for our products and capital equipment generally; sales of semiconductors; the investments by our customers in advanced technologies and new materials; the allocation of capital spending by our customers (and, in particular, the percentage of spending that our customers allocate to process control); growth of revenue in the semiconductor industry, the semiconductor capital equipment industry and our business; technological trends in the semiconductor industry; future developments or trends in the global capital and financial markets; our future product offerings and product features; the success and market acceptance of new products; timing of shipment of backlog; our future product shipments and product and service revenues; our future gross margins; our future research and development expenses and selling, general and administrative expenses; our ability to successfully maintain cost discipline; international sales and operations; our ability to maintain or improve our existing competitive position; success of our product offerings; creation and funding of programs for research and development; attraction and retention of employees; results of our investment in leading edge technologies; the effects of hedging transactions; the effect of the sale of trade receivables and promissory notes from customers; our future effective income tax rate; our recognition of tax benefits; future payments of dividends to our stockholders; the completion of any acquisitions of third parties, or the technology or assets thereof; benefits received from any acquisitions and development of acquired technologies; sufficiency of our existing cash balance, investments, cash generated from operations and the unfunded portion of our revolving line of credit under a Credit Agreement (the “Credit Agreement”) to meet our operating and working capital requirements, including debt service and payment thereof; future dividends, and stock repurchases; our compliance with the financial covenants under the Credit Agreement; the adoption of new accounting pronouncements; the tax liabilities resulting from the enactment of the Tax Cuts and Jobs Act; and our repayment of our outstanding indebtedness.

Our actual results may differ significantly from those projected in the forward-looking statements in this report. Factors that might cause or contribute to such differences include, but are not limited to, those discussed in Part II, Item 1A, “Risk Factors” in this report as well as in Item 1, “Business” and Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended June 30, 2017, filed with the Securities and Exchange Commission on August 4, 2017. You should carefully review these risks and also review the risks described in other documents we file from time to time with the Securities and Exchange Commission. You are cautioned not to place undue reliance on these forward-looking statements, and we expressly assume no obligation and do not intend to update the forward-looking statements in this report after the date hereof.

EXECUTIVE SUMMARY

KLA-Tencor Corporation is a leading supplier of process control and yield management solutions for the semiconductor and related nanoelectronics industries. Our broad portfolio of inspection and metrology products, and related service, software and other offerings primarily supports integrated circuit (“IC” or “chip”) manufacturers throughout the entire semiconductor fabrication process, from research and development to final volume production. We provide leading-edge equipment, software and support that enable IC manufacturers to identify, resolve and manage significant advanced technology manufacturing process challenges and obtain higher finished product yields at lower overall cost. In addition to serving the semiconductor industry, we also provide a range of technology solutions to a number of other high technology industries, including advanced packaging, light emitting diode (“LED”), power devices, compound semiconductor and data storage industries, as well as general materials research.

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Our products and services are used by the vast majority of bare wafer, IC, lithography reticle (“reticle” or “mask”) and disk manufacturers around the world. Our products, services and expertise are used by our customers to measure, detect, analyze and resolve critical product defects that arise in that environment in order to control nanometric level manufacturing processes. Our revenues are driven largely by our customers’ spending on capital equipment and related maintenance services necessary to support key transitions in their underlying product technologies, or to increase their production volumes in response to market demand or expansion plans. Our semiconductor customers generally operate in one or more of the three major semiconductor markets - memory, foundry and logic. All three of these markets are characterized by rapid technological changes and sudden shifts in end-user demand, which influence the level and pattern of our customers’ spending on our products and services. Although capital spending in all three semiconductor markets has historically been very cyclical, the demand for more advanced and lower cost chips used in a growing number of consumer electronics, communications, data processing, and industrial and automotive products has resulted over the long term in a favorable demand environment for our process control and yield management solutions, particularly in the foundry and logic markets, which have higher levels of process control adoption than the memory market.

As we are a supplier to the global semiconductor and semiconductor-related industries, our customer base continues to become more highly concentrated over time, thereby increasing the potential impact of a sudden change in capital spending by a major customer on our revenues and profitability. As our customer base becomes increasingly more concentrated, large orders from a relatively limited number of customers account for a substantial portion of our sales, which potentially exposes us to more volatility for revenues and earnings. In the global semiconductor related industries, China is emerging as a major region for manufacturing of logic and memory chips, adding to its role as the world’s largest consumer of ICs. Government initiatives are propelling China to expand its domestic manufacturing capacity and attracting semiconductor manufacturers from Taiwan, Korea, Japan and the US. China is currently seen as an important long term growth region for the semiconductor capital equipment sector. We are also subject to the cyclical capital spending that has historically characterized the semiconductor and semiconductor-related industries. The timing, length, intensity and volatility of the capacity-oriented capital spending cycles of our customers are unpredictable.

The semiconductor industry has also been characterized by constant technological innovation. Currently, there are multiple drivers for growth in the industry with increased demand for chips providing computation power and connectivity for Artificial Intelligence (“AI”) applications and support for mobile devices at the leading edge of foundry chip manufacturing. Qualification of early extreme ultraviolet (“EUV”) lithography processes and equipment is driving growth at leading logic/foundry and dynamic random-access memory (“DRAM”) manufacturers. Expansion of the Internet of Things (“IoT”) together with increasing acceptance of advanced driver assistance systems (“ADAS”) in anticipation of the introduction of autonomous cars have begun to accelerate legacy-node technology conversions and capacity expansions. Intertwined in these areas, spurred by data storage and connectivity needs, is the growth in demand for memory chips. On the other hand, higher design costs for the most advanced ICs could economically constrain leading-edge manufacturing technology customers to focus their resources on only the large technologically advanced products and applications. We believe that, over the long term, our customers will continue to invest in advanced technologies and new materials to enable smaller design rules and higher density applications that fuel demand for process control equipment, although the growth for such equipment may be adversely impacted by higher design costs for advanced ICs, reuse of installed products, and delays in production ramps by our customers in response to higher costs and technical challenges at more advanced technology nodes.

The demand for our products and our revenue levels are driven by our customers’ needs to solve the process challenges that they face as they adopt new technologies required to fabricate advanced ICs that are incorporated into sophisticated mobile devices. The timing for our customers in ordering and taking delivery of process control and yield management equipment is also determined by our customers’ requirements to meet the next generation production ramp schedules, and the timing for capacity expansion to meet end customer demand. During the three months ended December 31, 2017, revenues for our process control equipment had a modest increase compared to the quarter ended September 30, 2017. Our earnings will depend not only on our revenue levels, but also on the amount of research and development spending required to meet our customers’ technology roadmaps. We have maintained production volumes and capacity to meet anticipated customer requirements and remain at risk of incurring significant inventory-related and other restructuring charges if business conditions deteriorate. Over the past year, our customers have taken delivery of higher volumes of process control equipment than they did in the previous year. However, any delay or push out by our customers in taking delivery of process control and yield management equipment may cause earnings volatility, due to increases in the risk of inventory related charges as well as timing of revenue recognition.

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The following table sets forth some of our key quarterly unaudited financial information:

(In thousands, except net income loss) per share)	Three months ended
	December 31, 2017			September 30, 2017		June 30, 2017		March 31, 2017		December 31, 2016		September 30, 2016
Total revenues	$	975,822		$	969,581	$	938,647	$	913,809	$	876,885	$	750,673
Gross margin	$	628,488		$	616,132	$	590,717	$	570,535	$	558,378	$	472,837
Net income (loss)	$	(134,319	)	$	280,936	$	256,162	$	253,562	$	238,251	$	178,101
Net income (loss) per share:
Basic (1)	$	(0.86	)	$	1.79	$	1.64	$	1.62	$	1.52	$	1.14
Diluted (1)	$	(0.86	)	$	1.78	$	1.62	$	1.61	$	1.52	$	1.13

__________________ 

(1) Basic and diluted net income (loss) per share are computed independently for each of the quarters presented based on the weighted-average basic and fully diluted shares outstanding for each quarter. Therefore, the sum of quarterly basic and diluted net income (loss) per share information may not equal annual (or other multiple-quarter calculations of) basic and diluted net income (loss) per share.

CRITICAL ACCOUNTING ESTIMATES AND POLICIES

The preparation of our condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions in applying our accounting policies that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. Note 1 to the consolidated financial statements in our Annual Report on Form 10-K for the fiscal year ended June 30, 2017 describes the significant accounting policies and methods used in preparation of the condensed consolidated financial statements. We base these estimates and assumptions on historical experience, and evaluate them on an ongoing basis to ensure that they remain reasonable under current conditions. Actual results could differ from those estimates. We discuss the development and selection of the critical accounting estimates with the Audit Committee of our Board of Directors on a quarterly basis, and the Audit Committee has reviewed our related disclosure in this Quarterly Report on Form 10-Q. The accounting policies that reflect our more significant estimates, judgments and assumptions and which we believe are the most critical to aid in fully understanding and evaluating our reported financial results include the following:

• Revenue Recognition

• Inventories

• Warranty

• Allowance for Doubtful Accounts

• Equity and Cash-Based Long-Term Incentive Compensation Plans

• Contingencies and Litigation

• Goodwill and Intangible Assets

• Income Taxes

• Valuation of Marketable Securities

Other than the recording of provisional tax amounts for the transition tax payable and adoption of the accounting standard update on accounting for subsequent measurement of inventory (see “Recent Accounting Pronouncements” below), there were no significant changes in our critical accounting estimates and policies during the six months ended December 31, 2017. Please refer to Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in Part II, Item 7 of our Annual Report on Form 10-K for our fiscal year ended June 30, 2017 for a more complete discussion of our critical accounting policies and estimates.

Revenue Recognition

We recognize revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectibility is reasonably assured. We derive revenue from three sources—sales of systems, spare parts and services. In general, we recognize revenue for systems when the system has been installed, is operating according to predetermined specifications and is accepted by the customer. When we have demonstrated a history of successful installation and acceptance, we recognize revenue upon delivery and customer acceptance.

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Under certain circumstances, however, we recognize revenue prior to acceptance from the customer, as follows:

• When the customer fab has previously accepted the same tool, with the same specifications, and when we can objectively demonstrate that the tool meets all of the required acceptance criteria.

• When system sales to independent distributors have no installation requirement, contain no acceptance agreement, and 100% of the payment is due based upon shipment.

• When the installation of the system is deemed perfunctory.

• When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as intended and meets predetermined specifications.

In circumstances in which we recognize revenue prior to installation, the portion of revenue associated with installation is deferred based on estimated fair value, and that revenue is recognized upon completion of the installation.

In many instances, products are sold in stand-alone arrangements. Services are sold separately through renewals of annual maintenance contracts. We have multiple element revenue arrangements in cases where certain elements of a sales arrangement are not delivered and accepted in one reporting period. To determine the relative fair value of each element in a revenue arrangement, we allocate arrangement consideration based on the selling price hierarchy. For substantially all of the arrangements with multiple deliverables pertaining to products and services, we use vendor-specific objective evidence (“VSOE”) or third-party evidence (“TPE”) to allocate the selling price to each deliverable. We determine TPE based on historical prices charged for products and services when sold on a stand-alone basis. When we are unable to establish relative selling price using VSOE or TPE, we use estimated selling price (“ESP”) in our allocation of arrangement consideration. The objective of ESP is to determine the price at which we would transact a sale if the product or service were sold on a stand-alone basis. ESP could potentially be used for new or customized products. We regularly review relative selling prices and maintain internal controls over the establishment and updates of these estimates. In a multiple element revenue arrangement, we defer revenue recognition associated with the relative fair value of each undelivered element until that element is delivered to the customer. To be considered a separate element, the product or service in question must represent a separate unit of accounting, which means that such product or service must fulfill the following criteria: (a) the delivered item(s) has value to the customer on a stand-alone basis; and (b) if the arrangement includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in our control. If the arrangement does not meet all the above criteria, the entire amount of the sales contract is deferred until all elements are accepted by the customer.

Trade-in rights are occasionally granted to customers to trade in tools in connection with subsequent purchases. We estimate the value of the trade-in right and reduce the revenue recognized on the initial sale. This amount is recognized at the earlier of the exercise of the trade-in right or the expiration of the trade-in right.

We enter into volume purchase agreements with some of our customers. We accrue the estimated credits earned by our customers for such incentives, and in situations when the credit levels vary depending upon sales volume, we update our accrual based on the amount that we estimate will be purchased pursuant to the volume purchase agreements. Accruals for customer credits are recorded as an offset to revenue or deferred revenue.

Spare parts revenue is recognized when the parts have been shipped, risk of loss has passed to the customer and collection of the resulting receivable is reasonably assured.

Service and maintenance contract revenue is recognized ratably over the term of the maintenance contract. Revenue from services performed in the absence of a maintenance contract, including consulting and training revenue, is recognized when the related services are performed and collectibility is reasonably assured.

We sell stand-alone software that is subject to software revenue recognition guidance. We periodically review selling prices to determine whether VSOE exists, and in situations where we are unable to establish VSOE for undelivered elements such as post-contract service, revenue is recognized ratably over the term of the service contract.

We also defer the fair value of non-standard warranty bundled with equipment sales as unearned revenue. Non-standard warranty includes services incremental to the standard 40-hour per week coverage for 12 months. Non-standard warranty is recognized ratably as revenue when the applicable warranty term period commences.

The deferred system profit balance equals the value of products that have been shipped and billed to customers which have not met our revenue recognition criteria, less applicable product and warranty costs. Deferred system profit does not include the profit associated with product shipments to certain customers in Japan, to whom title does not transfer until customer acceptance. Shipments to such customers in Japan are classified as inventory at cost until the time of acceptance.

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We enter into sales arrangements that may consist of multiple deliverables of our products and services where certain elements of the sales arrangement are not delivered and accepted in one reporting period. Judgment is required to properly identify the accounting units of the multiple deliverable transactions and to determine the manner in which revenue should be allocated among the accounting units. Additionally, judgment is required to interpret various commercial terms and determine when all criteria of revenue recognition have been met in order for revenue recognition to occur in the appropriate accounting period. While changes in the allocation of the estimated selling price between the accounting units will not affect the amount of total revenue recognized for a particular arrangement, any material changes in these allocations could impact the timing of revenue recognition, which could have a material effect on our financial position and results of operations.

Income Taxes

We account for income taxes in accordance with the authoritative guidance which requires income tax effects for changes in tax laws are recognized in the period in which the law is enacted.

Transition tax liability is recognized in the period when the change in the U.S. tax law was enacted and the income tax effects are recorded as a component of provision for income taxes from continuing operations. The calculation of the transition tax liability includes assumptions and reasonable estimates of the income tax effects and are based on provisional tax amounts. Several inputs were considered in the calculation, such as the calculation of the post-1986 foreign earnings and profit (“E&P”), income tax pools for all foreign subsidiaries, and the amount of those earnings held in cash and other specified assets. We applied the current interpretations from the U.S. federal and state governments and regulatory organization in our calculation of the transition tax liability and our reasonable estimate of the transition tax liability could change if further interpretations are provided for in the future. We expect to fully complete our provisional transition tax liability calculation within the reasonable measurement period allowed by the authoritative guidance.

Deferred tax assets and liabilities are recognized using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. The guidance also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that a portion of the deferred tax asset will not be realized. We have determined that a valuation allowance is necessary against a portion of the deferred tax assets, but we anticipate that our future taxable income will be sufficient to recover the remainder of our deferred tax assets. However, should there be a change in our ability to recover our deferred tax assets that are not subject to a valuation allowance, we could be required to record an additional valuation allowance against such deferred tax assets. This would result in an increase to our tax provision in the period in which we determine that the recovery is not probable.

On a quarterly basis, we provide for income taxes based upon an estimated annual effective income tax rate. The effective tax rate is highly dependent upon the geographic composition of worldwide earnings, tax regulations governing each region, availability of tax credits and the effectiveness of our tax planning strategies. We carefully monitor the changes in many factors and adjust our effective income tax rate on a timely basis. If actual results differ from these estimates, this could have a material effect on our financial condition and results of operations.

In addition, the calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax regulations. In accordance with the authoritative guidance on accounting for uncertainty in income taxes, we recognize liabilities for uncertain tax positions based on the two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained in audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. We reevaluate these uncertain tax positions on a quarterly basis. This evaluation is based on factors including, but not limited to, changes in facts or circumstances, changes in tax law, effectively settled issues under audit and new audit activity. Any change in these factors could result in the recognition of a tax benefit or an additional charge to the tax provision.

Valuation of Goodwill and Intangible Assets

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. We have four reporting units: Wafer Inspection, Patterning, Global Services and Support, and Others. See Note 6, “Goodwill and Purchased Intangible Assets” to the Condensed Consolidated Financial Statements for additional details.

We performed a qualitative assessment of the goodwill by reporting unit as of November 30, 2017 during the three months ended December 31, 2017 and concluded that there was no impairment. We assess goodwill for impairment annually as well as whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Long-lived intangible assets are tested for impairment whenever events or changes in circumstances indicate that their carrying amounts may not be recoverable.

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If we were to encounter challenging economic conditions, such as a decline in our operating results, an unfavorable industry or macroeconomic environment, a substantial decline in our stock price, or any other adverse change in market conditions, we may be required to perform the two-step quantitative goodwill impairment analysis. In addition, if such conditions have the effect of changing one of the critical assumptions or estimates we use to calculate the value of our goodwill or intangible assets, we may be required to record goodwill and/or intangible asset impairment charges in future periods, whether in connection with our next annual impairment assessment or prior to that, if any triggering event occurs outside of the quarter during which the annual goodwill impairment assessment is performed. It is not possible at this time to determine if any such future impairment charge would occur or, if it does, whether such charge would be material to our consolidated results of operations.

Inventories

Inventories are stated at the lower of cost (on a first-in, first-out basis) or net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Demonstration units are stated at their manufacturing cost and written down to their net realizable value. We review and set standard costs semi-annually at current manufacturing costs in order to approximate actual costs. Our manufacturing overhead standards for product costs are calculated assuming full absorption of forecasted spending over projected volumes, adjusted for excess capacity. Abnormal inventory costs such as costs of idle facilities, excess freight and handling costs, and spoilage are recognized as current period charges. We write down product inventory based on forecasted demand and technological obsolescence and service spare parts inventory based on forecasted usage. These factors are impacted by market and economic conditions, technology changes, new product introductions and changes in strategic direction and require estimates that may include uncertain elements. Actual demand may differ from forecasted demand, and such differences may have a material effect on recorded inventory values.

Recent Accounting Pronouncements

For a description of recent accounting pronouncements, including those recently adopted and the expected dates of adoption as well as estimated effects, if any, on our condensed consolidated financial statements of those not yet adopted, see Note 1, “Basis of Presentation” to the Condensed Consolidated Financial Statements.

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RESULTS OF OPERATIONS

Revenues and Gross Margin

	Three months ended
(Dollar amounts in thousands)	December 31, 2017			September 30, 2017			December 31, 2016			Q2 FY18 vs. Q1 FY18					Q2 FY18 vs. Q2 FY17
Revenues:
Product	$	761,587		$	760,787		$	683,733		$	800		—	%	$	77,854	11	%
Service	214,235			208,794			193,152			5,441			3	%	21,083		11	%
Total revenues	$	975,822		$	969,581		$	876,885		$	6,241		1	%	$	98,937	11	%
Costs of revenues	$	347,334		$	353,449		$	318,507		$	(6,115	)	(2	)%	$	28,827	9	%
Gross margin percentage	64		%	64		%	64		%

	Six months ended
(Dollar amounts in thousands)	December 31, 2017			December 31, 2016			Q2 FY18 YTD vs. Q2 FY17 YTD
Revenues:
Product	$	1,522,374		$	1,245,486		$	276,888	22	%
Service	423,029			382,072			40,957		11	%
Total revenues	$	1,945,403		$	1,627,558		$	317,845	20	%
Costs of revenues	$	700,783		$	596,343		$	104,440	18	%
Gross margin percentage	64		%	63		%

Product revenues

Our business is affected by the concentration of our customer base and our customers’ capital equipment procurement schedules as a result of their investment plans. Our product revenues in any particular quarter are significantly impacted by the amount of new orders that we receive during that quarter and, depending upon the duration of manufacturing and installation cycles, in the preceding quarters.

Product revenues during the three months ended December 31, 2017 compared to the three months ended September 30, 2017 remained relatively unchanged.

Product revenues increased during the three months ended December 31, 2017 compared to the three months ended December 31, 2016, primarily due to increased investments from our memory customers for next generation technology as well as capacity-related investments.

Product revenues increased during the six months ended December 31, 2017 compared to the six months ended December 31, 2016, primarily due to increased investments from our memory and logic customers for next generation technology as well as capacity-related investments.

Service revenues

Service revenues are generated from maintenance contracts, as well as billable time and material service calls made to our customers after the expiration of the warranty period. The amount of our service revenues is typically a function of the number of post-warranty systems installed at our customers’ sites and the utilization of those systems, but it is also impacted by other factors, such as our rate of service contract renewals, the types of systems being serviced and fluctuations in foreign exchange rates. Service revenues during the three months ended December 31, 2017 increased compared to each of the three months ended September 30, 2017 and December 31, 2016, and service revenues during the six months ended December 31, 2017increased compared to the six months ended December 31, 2016, primarily as a result of an increase over time in the number of post-warranty systems installed at our customers’ sites over that time period.

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Revenues by region

The following is a summary of revenues by geographic region, based on ship-to location, for the indicated periods (as a percentage of total revenues):

	Three months ended
(Dollar amounts in thousands)	December 31, 2017				September 30, 2017				December 31, 2016
Korea	$	270,184	28	%	$	274,678	28	%	$	96,846	11	%
Taiwan	216,791		22	%	138,559		14	%	336,058		38	%
Japan	154,762		16	%	146,435		15	%	67,855		8	%
North America	149,042		15	%	129,250		13	%	153,162		17	%
Europe & Israel	82,158		8	%	83,505		9	%	93,440		11	%
China	66,460		7	%	168,339		17	%	73,152		9	%
Rest of Asia	36,425		4	%	28,815		4	%	56,372		6	%
Total	$	975,822	100	%	$	969,581	100	%	$	876,885	100	%

A significant portion of our revenues continues to be generated in Asia, where a substantial portion of the world’s semiconductor manufacturing capacity is located, and we expect that trend to continue.

Gross margin

Our gross margin fluctuates with revenue levels and product mix and is affected by variations in costs related to manufacturing and servicing our products, including our ability to scale our operations efficiently and effectively in response to prevailing business conditions.

The following table summarizes the major factors that contributed to the changes in gross margin percentage:

	Gross Margin Percentage			Gross Margin Percentage
	Three months ended			Three months ended		Six months ended
September 30, 2017	63.5	%	December 31, 2016	63.7	%	63.4	%
Revenue volume of products and services	(0.1	)%	Revenue volume of products and services	0.6	%	1.4	%
Mix of products and services sold	0.5	%	Mix of products and services sold	0.5	%	(0.5	)%
Manufacturing labor, overhead and efficiencies	0.1	%	Manufacturing labor, overhead and efficiencies	(0.4	)%	(0.1	)%
Other service and manufacturing costs	0.4	%	Other service and manufacturing costs	—	%	(0.2	)%
December 31, 2017	64.4	%	December 31, 2017	64.4	%	64.0	%

Changes in gross margin percentage driven by revenue volume of products and services reflect our ability to leverage existing infrastructure to generate higher revenues. It also includes the effect of fluctuations in foreign exchange rates, average customer pricing and customer revenue deferrals associated with volume purchase agreements. Changes in gross margin percentage from mix of products and services sold reflect the impact of changes in the composition within product and service offerings. Changes in gross margin percentage from manufacturing labor, overhead and efficiencies reflect our ability to manage costs and drive productivity as we scale our manufacturing activity to respond to customer requirements; this includes the impact of capacity utilization, use of overtime and variability of cost structure. Changes in gross margin percentage from other service and manufacturing costs include the impact of customer support costs, including the efficiencies with which we deliver services to our customers, and the effectiveness with which we manage our production plans and inventory risk.

Our gross margin increased to 64.4% during the three months ended December 31, 2017 from 63.5% during the three months ended September 30, 2017, primarily due to a favorable mix of products and services sold, a lower charges for inventory obsolescence, lower warranty costs, and an increase in manufacturing efficiencies.

Our gross margin increased to 64.4% during the three months ended December 31, 2017, from 63.7% during the three months ended December 31, 2016, primarily due to higher revenue volume of products and services, and a favorable mix of products and services sold, partially offset by a decrease in manufacturing efficiencies.

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Our gross margin increased to 64.0% during the six months ended December 31, 2017, from 63.4% during the six months ended December 31, 2016, primarily due to higher revenue volume of products and services, partially offset by a less favorable mix of products and services sold, a decrease in manufacturing efficiencies, and other costs.

Research and Development (“R&D”)

(Dollar amounts in thousands)	Three months ended
	December 31, 2017			September 30, 2017			December 31, 2016			Q2 FY18 vs. Q1 FY18				Q2 FY18 vs. Q2 FY17
R&D expenses	$	156,745		$	146,732		$	130,912		$	10,013	7	%	$	25,833	20	%
R&D expenses as a percentage of total revenues	16		%	15		%	15		%

(Dollar amounts in thousands)	Six months ended
	December 31, 2017			December 31, 2016			Q2 FY18 YTD vs. Q2 FY17 YTD
R&D expenses	$	303,477		$	260,145		$	43,332	17	%
R&D expenses as a percentage of total revenues	16		%	16		%

R&D expenses may fluctuate with product development phases and project timing as well as our focused R&D efforts that are aligned with our overall business strategy. As technological innovation is essential to our success, we may incur significant costs associated with R&D projects, including compensation for engineering talent, engineering material costs, and other expenses.

R&D expenses during the three months ended December 31, 2017increased compared to the three months ended September 30, 2017, primarily due to an increase in engineering materials and supplies expenses of $9.1 million, and an increase in consulting expenses of $1.4 million, partially offset by a decrease in merger-related expenses of $1.1 million.

R&D expenses during the three months ended December 31, 2017increased compared to the three months ended December 31, 2016, primarily due to an increase in engineering materials and supplies expenses of $13.5 million, an increase in employee-related expenses of $9.0 million as a result of additional engineering headcount, and higher variable compensation, and an increase in consulting expenses of $1.8 million, partially offset by a decrease in merger-related expenses of $1.1 million.

R&D expenses during the six months ended December 31, 2017increased compared to the six months ended December 31, 2016, primarily due to an increase in engineering materials and supplies expenses of $21.9 million, an increase in employee-related expenses of $16.8 million as a result of additional engineering headcount, and higher variable compensation, an increase in consulting expenses of $1.8 million, an increase in depreciation expense of $1.0 million, and a lower benefit from external funding of $1.4 million.

Our future operating results will depend significantly on our ability to produce products and provide services that have a competitive advantage in our marketplace. To do this, we believe that we must continue to make substantial and focused investments in our research and development. We remain committed to product development in new and emerging technologies as we address the yield challenges our customers face at future technology nodes.

Selling, General and Administrative (“SG&A”)

	Three months ended
(Dollar amounts in thousands)	December 31, 2017			September 30, 2017			December 31, 2016			Q2 FY18 vs. Q1 FY18					Q2 FY18 vs. Q2 FY17
SG&A expenses	$	105,546		$	107,713		$	93,532		$	(2,167	)	(2	)%	$	12,014	13	%
SG&A expenses as a percentage of total revenues	11		%	11		%	11		%

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	Six months ended
(Dollar amounts in thousands)	December 31, 2017			December 31, 2016			Q2 FY18 YTD vs. Q2 FY17 YTD
SG&A expenses	$	213,259		$	187,920		$	25,339	13	%
SG&A expenses as a percentage of total revenues	11		%	12		%

SG&A expenses during the three months ended December 31, 2017decreased compared to the three months ended September 30, 2017, primarily due to lower employee-related expenses of $4.1 million as a result of lower variable compensation, and a decrease in merger-related expenses of $1.4 million, partially offset by an increase in consulting expense of $1.7 million, and the impact of the recovery from accounts receivable that had been previously classified as bad debt of $1.9 million during the three months ended September 30, 2017.

SG&A expenses during the three months ended December 31, 2017increased compared to the three months ended December 31, 2016, primarily due to an increase in employee-related expenses of $7.3 million on account of additional headcount, and higher variable compensation, an increase in consulting expense of $3.2 million, an increase in facilities-related expense of $1.2 million, and higher contributions to our corporate social responsibility program of $1.0 million, partially offset by a decrease in merger-related expenses of $2.7 million.

SG&A expenses during the six months ended December 31, 2017increased compared to the six months ended December 31, 2016, primarily due to an increase in employee-related expenses of $17.4 million on account of additional headcount, and higher variable compensation, an increase in consulting expense of $3.8 million, higher contributions to our corporate social responsibility program of $2.0 million, an increase in facilities-related expense of $1.9 million, higher travel-related expenses of $1.8 million, and an increase in cost of support for sales evaluations of $1.2 million, partially offset by a decrease in merger-related expenses of $3.6 million, and the impact of the recovery from accounts receivable that had been previously classified as bad debt of $1.9 million during the three months ended September 30, 2017.

Interest Expense and Other Expense (Income), Net

(Dollar amounts in thousands)	Three months ended
	December 31, 2017			September 30, 2017			December 31, 2016
Interest expense	$	27,372		$	30,576		$	30,624
Other expense (income), net	$	(8,482	)	$	(5,041	)	$	(3,535	)
Interest expense as a percentage of total revenues	3		%	3		%	3		%
Other expense (income), net as a percentage of total revenues	1		%	1		%	—		%

(Dollar amounts in thousands)	Six months ended
	December 31, 2017			December 31, 2016
Interest expense	$	57,948		$	61,356
Other expense (income), net	$	(13,523	)	$	(7,271	)
Interest expense as a percentage of total revenues	3		%	4		%
Other expense (income), net as a percentage of total revenues	1		%	—		%

Interest expense during the three and six months ended December 31, 2017 decreased compared to the three and six months ended December 31, 2016 and the three months ended September 30, 2017, primarily due to $250.0 million repayment of the Senior Notes at maturity and prepayment of term loans.

Other expense (income), net is comprised primarily of realized gains or losses on sales of marketable securities, gains or losses from revaluations of certain foreign currency denominated assets and liabilities as well as foreign currency contracts, impairments associated with equity investments in privately-held companies and any subsequent recoveries of impaired investments, interest-related accruals (such as interest and penalty accruals related to our tax obligations) and interest income earned on our investment and cash portfolio.

The increase in other expense (income), net during the three months ended December 31, 2017 compared to the three months ended September 30, 2017 was primarily due to net foreign currency gain of $1.6 million, and an impairment charge on an equity investment in a privately-held company of $1.0 million that occurred during the three months ended September 31, 2017, which did not take place during the three months ended December 31, 2017.

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The increase in other expense (income), net during the three months ended December 31, 2017 compared to the three months ended December 31, 2016 was primarily due to an increase in interest income of $3.2 million and net foreign currency gains of approximately $1.6 million.

The increase in other expense (income), net during the six months ended December 31, 2017 compared to the six months ended December 31, 2016 was primarily due to an increase in interest income of $6.9 million.

Provision for Income Taxes

The following table provides details of income taxes:    

	Three months ended December 31,						Six months ended December 31,
(Dollar amounts in thousands)	2017			2016			2017			2016
Income before income taxes	$	347,307		$	306,845		$	683,459		$	529,065
Provision for income taxes	$	481,626		$	68,594		$	536,842		$	112,713
Effective tax rate	138.7		%	22.4		%	78.5		%	21.3		%

Our effective tax rate during thethreeandsixmonths endedDecember 31, 2017was impacted by the Tax Cuts and Jobs Act (“the Act”), which was enacted into law on December 22, 2017.Income tax effects resulting from changes in tax laws are accounted for by us in accordance with the authoritative guidance, which requires that these tax effects be recognized in the period in which the law is enacted and the effects are recorded as a component of provision for income taxes from continuing operations. As a result, we made an additional provision for income tax resulting from the enactment of the Act during the three and six months ended December 31, 2017.

This Act includes significant changes to the U.S. corporate income tax system which reduces the U.S. federal corporate tax rate from 35.0% to 21.0% as of January 1, 2018; shifts to a modified territorial tax regime which requires companies to pay a transition tax on earnings of certain foreign subsidiaries that were previously tax deferred; and creates new taxes on certain foreign-sourced earnings. The decrease in the U.S. federal corporate tax rate from 35.0% to 21.0% results in a blended statutory tax rate of 28.1% for the fiscal year ending June 30, 2018. The new taxes for certain foreign-sourced earnings under the Act are effective for the Company after the fiscal year ending June 30, 2018.

Provision for income taxes increased by $413.0 million and $424.1 million during the three and six months ended December 31, 2017, respectively, primarily due to: (i) a transition tax of $340.9 million on our total post-1986 earnings and profits (“E&P”) which, prior to the enactment of the Act, was previously deferred from U.S. income taxes; and (ii) a $101.1 million increase in income tax expense as a result of the re-measurement of our deferred tax assets and liabilities based on the Act’s new corporate tax rate of 21.0%. The increase in provision for income taxes during the three and six months ended December 31, 2017 was partially offset by a decrease of $25.0 million relating to the reduction of the U.S. federal corporate tax rate from 35.0% to 28.1% for the fiscal year ending June 30, 2018. The amounts resulting from the transition tax are payable over a period of up to eight years.

As of December 31, 2017, we had not yet completed our accounting for the tax effects of the enactment of the Act. Our provision for income taxes for the three and six months ended December 31, 2017 is based in part on a reasonable estimate of the effects on its transition tax and existing deferred tax balances. For the amounts which we were able to reasonably estimate, we recognized a provisional tax amount of $442.0 million, which is included as a component of provision for income taxes from continuing operations. The components of the provisional tax amounts are as follows:

• We recorded a provisional tax amount of $340.9 million for the transition tax liability. We have not yet completed the calculation of the total post-1986 foreign E&P and the income tax pools for all foreign subsidiaries. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when we finalize the calculation of post-1986 foreign E&P previously deferred from U.S. federal and state governments and regulatory organizations may change the provisional tax liability or the accounting treatment of the provisional tax liability.

• We recorded a provisional tax amount of $101.1 million to re-measure certain deferred tax assets and liabilities as a result of the enactment of the Act. We are still analyzing certain aspects of the Act and refining the estimate of the expected reversal of our deferred tax balances. This can potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts.

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We expect a recurring tax rate of 17% for the remaining six months of the fiscal year ending June 30, 2018. In addition, there will be an increase or decrease in tax expense for the remaining six months of the fiscal year ending June 30, 2018 for changes in uncertain tax positions and items treated as period costs that are not included in the recurring tax rate. Our recurring tax rate differs from our effective tax rate as a result of inclusion of certain period costs in our effective tax rate but not in the recurring tax rate. There will also be changes in the provisional tax amounts as a result of the Act related to the effects on our deferred tax balances and the transition tax as additional information becomes available. The new taxes for certain foreign-sourced earnings under the Act are effective for us after the fiscal year ending June 30, 2018.

The Act also includes provisions for Global Intangible Low-Taxed Income (“GILTI”) wherein taxes on foreign income are imposed in excess of a deemed return on tangible assets of foreign corporations. This income will effectively be taxed at a 10.5% tax rate in general. As a result, our deferred tax assets and liabilities are being evaluated if the deferred tax assets and liabilities should be recognized for the basis differences expected to reverse as a result of GILTI provisions that are effective for us after the fiscal year ending June 30, 2018, or should the tax on GILTI provisions be recognized in the period the Act was signed into law. Because of the complexity of the new provisions, we are continuing to evaluate on how the provisions will be accounted for under the U.S. generally accepted accounting principles wherein companies are allowed to make an accounting policy election of either (i) account for GILTI as a component of tax expense in the period in which we are subject to the rules (the “period cost method”), or (ii) account for GILTI in our measurement of deferred taxes (the “deferred method”). Currently, we have not elected a method and will only do so after our completion of the analysis of the GILTI provisions and our election method will depend, in part, on analyzing our global income to determine whether we expect to have future U.S. inclusions in our taxable income related to GILTI and, if so, the impact that is expected.

In the normal course of business, we are subject to examination by tax authorities throughout the world. We are subject to United States federal income tax examination for all years beginning from the fiscal year ended June 30, 2014. We are subject to state income tax examinations for all years beginning from the fiscal year ended June 30, 2013. We are also subject to examinations in other major foreign jurisdictions, including Singapore, for all years beginning from the fiscal year ended June 30, 2013.

It is possible that certain examinations may be concluded in the next twelve months. We believe that we may recognize up to $12.6 million of our existing unrecognized tax benefits within the next twelve months as a result of the lapse of statutes of limitations and the resolution of examinations with various tax authorities.

LIQUIDITY AND CAPITAL RESOURCES

(Dollar amounts in thousands)	As of December 31, 2017			As of June 30, 2017
Cash and cash equivalents	$	1,073,394		$	1,153,051
Marketable securities	1,684,796			1,863,689
Total cash, cash equivalents and marketable securities	$	2,758,190		$	3,016,740
Percentage of total assets	51		%	55		%
	Six months ended December 31,
(In thousands)	2017			2016
Cash flows:
Net cash provided by operating activities	$	503,000		$	392,190
Net cash provided by (used in) investing activities	138,949			(308,156		)
Net cash used in financing activities	(726,429		)	(247,603		)
Effect of exchange rate changes on cash and cash equivalents	4,823			(7,886		)
Net decrease in cash and cash equivalents	$	(79,657	)	$	(171,455	)

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Cash and Cash Equivalents and Marketable Securities:

As of December 31, 2017, our cash, cash equivalents and marketable securities totaled $2.76 billion, which is a decrease of $258.6 million from June 30, 2017. The decrease is mainly due to the payment of Senior Notes and term loans of $696.3 million, payment of dividends and dividend equivalents of $192.9 million, and stock repurchases of $80.4 million, partially offset by our cash generated from operations, net proceeds from marketable securities of $172.4 million, and proceeds from the revolving credit facility, net of issuance costs, of $248.7 million. As of December 31, 2017, $1.96 billion of our $2.76 billion of cash, cash equivalents and marketable securities were held by our foreign subsidiaries and branch offices. We have accrued U.S. federal taxes under the Tax Cut and Jobs Act and can repatriate these funds without incurring any additional U.S. federal tax other than if the U.S. dollar value of the funds increase. We currently intend to indefinitely reinvest $1.76 billion of the cash, cash equivalents and marketable securities held by our foreign subsidiaries. If, however, a portion of these funds were to be repatriated to the United States, we would be required to accrue and pay state and foreign taxes of approximately 1%-22% of the funds repatriated. The amount of taxes due will depend on the amount and manner of the repatriation, as well as the location from which the funds are repatriated. We have accrued state and foreign tax on the remaining cash of $197.4 million of the $1.96 billion held by our foreign subsidiaries and branch offices. As such, these funds can be returned to the U.S. without accruing any additional U.S. tax expense.

Quarterly Cash Dividends and Special Cash Dividend:

During the three months ended December 31, 2017, our Board of Directors declared a regular quarterly cash dividend of $0.59 per share on our outstanding common stock, which was paid on December 1, 2017 to our stockholders of record as of the close of business on November 15, 2017. During the same period in fiscal year 2017, our Board of Directors declared and paid a regular quarterly cash dividend of $0.54 per share on our outstanding common stock. The total amount of regular quarterly cash dividends and dividend equivalents paid during the three months ended December 31, 2017 and 2016 was $92.6 million and $84.5 million, respectively. The total amount of regular quarterly cash dividends paid during the six months ended December 31, 2017 and 2016 was $186.7 million and $166.1 million, respectively. The amount of accrued dividends payable for regular quarterly cash dividends on unvested restricted stock units with dividend equivalent rights as of December 31, 2017 and June 30, 2017 was $4.8 million and $4.8 million, respectively. These amounts will be paid upon vesting of the underlying unvested restricted stock units as described in Note 8, “Equity and Long-term Incentive Compensation Plans,” to the condensed consolidated financial statements.

On November 19, 2014, we declared a special cash dividend of $16.50 per share on our outstanding common stock which was paid on December 9, 2014 to our stockholders of record as of the close of business on December 1, 2014. The declaration and payment of the special cash dividend was part of our leveraged recapitalization transaction under which the special cash dividend was financed through a combination of existing cash and proceeds from the debt financing disclosed in Note 7, “Debt,” to the condensed consolidated financial statements that was completed during the three months ended December 31, 2014. As of the declaration date, the total amount of the special cash dividend accrued by us was approximately $2.76 billion, substantially all of which was paid out during the three months ended December 31, 2014, except for the aggregate special cash dividend of $43.0 million that was accrued for the unvested restricted stock units. As of December 31, 2017 and June 30, 2017, we had $2.8 million and $9.0 million, respectively, of accrued dividends payable for the special cash dividend with respect to outstanding unvested restricted stock units, which will be paid when such underlying unvested restricted stock units vest. During the three months ended December 31, 2017 and 2016, the total special cash dividends paid with respect to vested restricted stock units were immaterial. During the six months ended December 31, 2017 and 2016, the total special cash dividends paid with respect to vested restricted stock units were $6.2 million and $7.7 million, respectively. Other than the special cash dividend declared during the three months ended December 31, 2014, we historically have not declared any special cash dividend.

Stock Repurchases:

The shares repurchased under our stock repurchase program have reduced our basic and diluted weighted-average shares outstanding. The stock repurchase program is intended, in part, to offset shares issued in connection with the purchases under our ESPP program and the vesting of employee restricted stock units.

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Cash Flows from Operating Activities:

We have historically financed our liquidity requirements through cash generated from our operations. Net cash provided by operating activities during the six months ended December 31, 2017increased by $110.8 million compared to the six months ended December 31, 2016 primarily as a result of the following factors:

• An increase in collections of approximately $271.0 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016, mainly driven by higher shipments;

• A decrease in payments for employee-related expenses of approximately $54.0 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016, primarily due to a change in the timing of certain variable compensation payments; and

• Favorable impacts from foreign currency hedges of approximately $10.0 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016; partially offset by

◦ An increase in accounts payable payments of approximately $186.0 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016; and

◦ A decrease in income tax payments of $36.9 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016.

Cash Flows from Investing Activities:

Net cash provided by investing activities during the six months ended December 31, 2017 was $138.9 million compared to cash used in investing activities of $308.2 million during the six months ended December 31, 2016. This change was mainly due to the net purchases of marketable securities of $285.0 million during the six months ended December 31, 2016, compared to the net liquidation of investments in marketable securities of approximately $172.4 million during the six months ended December 31, 2017.

Cash Flows from Financing Activities:

Net cash used in financing activities during the six months ended December 31, 2017increased by $478.8 million compared to the six months ended December 31, 2016. Net cash used in financing activities were mainly impacted by:

• An increase in the repayment of debt of $616.3 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016;

• An increase in common stock repurchases of $80.4 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016; and

• An increase in dividend and dividend equivalent payments of $19.1 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016, due to an increase in our quarterly dividend from $0.54 to $0.59 per share instituted during the six months ended December 31, 2017, partially offset by

◦ An increase in proceeds from revolving credit facility, net of issuance costs of $248.7 million during the six months ended December 31, 2017 compared to the six months ended December 31, 2016.

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Senior Notes:

In November 2014, we issued $2.50 billion aggregate principal amount of senior, unsecured long-term notes (collectively referred to as “Senior Notes”). We issued the Senior Notes as part of the leveraged recapitalization plan under which the proceeds from the Senior Notes in conjunction with the proceeds from the term loans (described below) and cash on hand were used (x) to fund a special cash dividend of $16.50 per share, aggregating to approximately $2.76 billion, (y) to redeem $750.0 million of 2018 Senior Notes, including associated redemption premiums, accrued interest and other fees and expenses and (z) for other general corporate purposes, including repurchases of shares pursuant to our stock repurchase program. The interest rate specified for each series of the Senior Notes will be subject to adjustments from time to time if Moody’s Investor Service, Inc. (“Moody’s”) or Standard & Poor’s Ratings Services (“S&P”) or, under certain circumstances, a substitute rating agency selected by us as a replacement for Moody’s or S&P, as the case may be (a “Substitute Rating Agency”), downgrades (or subsequently upgrades) its rating assigned to the respective series of Senior Notes such that the adjusted rating is below investment grade. If the adjusted rating of any series of Senior Notes from Moody’s (or, if applicable, any Substitute Rating Agency) is decreased to Ba1, Ba2, Ba3 or B1 or below, the stated interest rate on such series of Senior Notes as noted above will increase by 25 bps, 50 bps, 75 bps or 100 bps, respectively (“bps” refers to Basis Points and 1% is equal to 100 bps). If the rating of any series of Senior Notes from S&P (or, if applicable, any Substitute Rating Agency) with respect to such series of Senior Notes is decreased to BB+, BB, BB- or B+ or below, the stated interest rate on such series of Senior Notes as noted above will increase by 25 bps, 50 bps, 75 bps or 100 bps, respectively. The interest rates on any series of Senior Notes will permanently cease to be subject to any adjustment (notwithstanding any subsequent decrease in the ratings by any of Moody’s, S&P and, if applicable, any Substitute Rating Agency) if such series of Senior Notes becomes rated “Baa1” (or its equivalent) or higher by Moody’s (or, if applicable, any Substitute Rating Agency) and “BBB+” (or its equivalent) or higher by S&P (or, if applicable, any Substitute Rating Agency), or one of those ratings if rated by only one of Moody’s, S&P and, if applicable, any Substitute Rating Agency, in each case with a stable or positive outlook. In October 2014, we entered into a series of forward contracts to lock the 10-year treasury rate (“benchmark rate”) on a portion of the Senior Notes with a notional amount of $1.00 billion in aggregate. For additional details, refer to Note 14, “Derivative Instruments and Hedging Activities,” to the condensed consolidated financial statements.

The original discount on the Senior Notes amounted to $4.0 million and is being amortized over the life of the debt. Interest is payable semi-annually on May 1 and November 1 of each year. The debt indenture (the “Indenture”) includes covenants that limit our ability to grant liens on its facilities and enter into sale and leaseback transactions, subject to certain allowances under which certain sale and leaseback transactions are not restricted. In November 2017, we repaid $250.0 million of Senior Notes at maturity. As of December 31, 2017, we were in compliance with all of the covenants under the Indenture associated with the Senior Notes.

Credit Facility (Term Loans and Unfunded Revolving Credit Facility) and Revolving Credit Facility:

In November 2014, we entered into $750.0 million of five-year senior unsecured prepayable term loans and a $500.0 million unfunded revolving credit facility (collectively, the “Credit Facility”).

In November 2017, we entered into a Credit Agreement (the “Credit Agreement”) providing for a $750.0 million five-year unsecured revolving credit facility (the “Revolving Credit Facility”), which replaced our prior Credit Facility. Subject to the terms of the Credit Agreement, the Revolving Credit Facility may be increased in an amount up to $250.0 million in the aggregate. As of December 30, 2017, 2017, after giving effect to the borrowings made on the closing date, we had outstanding $250.0 million aggregate principal amount of borrowings under the Revolving Credit Facility. The proceeds from the borrowings on the closing date, together with the cash on hand was used to pay in full the remaining term loan balance under the Credit Facility.

We may borrow, repay and reborrow funds under the Revolving Credit Facility until its maturity don November 30, 2022 (the “Maturity Date”), at which time such Revolving Credit Facility will terminate, and all outstanding loans under such facility, together with all accrued and unpaid interest, must be repaid. We may prepay the Revolving Credit Facility at any time without a prepayment penalty.

Borrowings under the Revolving Credit Facility will bear interest, at our option, at either: (i) the Alternative Base Rate (“ABR”) plus a spread, which ranges from 0 bps to 75 bps, or (ii) the London Interbank Offered Rate (“LIBOR”) plus a spread, which ranges from 100 bps to 175 bps. The spreads under ABR and LIBOR are subject to adjustment in conjunction with credit rating downgrades or upgrades. We are also obligated to pay an annual commitment fee on the daily undrawn balance of the Revolving Credit Facility, which ranges from 10 bps to 25 bps, subject to an adjustment in conjunction with changes to our credit rating. As of December 31, 2017, we elected to pay interest on the borrowed amount under the Revolving Credit Facility at LIBOR plus a spread of 125 bps, and an annual commitment fee of 15 bps on the daily undrawn balance of the Revolving Credit Facility.

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The Revolving Credit Facility requires us to maintain an interest expense coverage ratio as described in the Credit Agreement, on a quarterly basis, covering the trailing four consecutive fiscal quarters of no less than 3.50 to 1.00. In addition, we are required to maintain the maximum leverage ratio as described in the Credit Agreement, on a quarterly basis of 3.00 to 1.00, covering the trailing four consecutive fiscal quarters for each fiscal quarter, which can be increased to 4.00 to 1.00 for a period of time in connection with a material acquisition or a series of material acquisitions.

We were in compliance with the financial covenants under the Credit Agreement as of December 31, 2017 (the interest expense coverage ratio was 13.19 to 1.00 and the leverage ratio was 1.59 to 1.00). Considering our current liquidity position, short-term financial forecasts and ability to prepay the Revolving Credit Facility, if necessary, we expect to continue to be in compliance with our financial covenants at the end of our fiscal year ending June 30, 2018.

Contractual Obligations:

The following is a schedule summarizing our significant obligations to make future payments under contractual obligations as of December 31, 2017:

	Fiscal year ending June 30,
(In thousands)	Total		2018 (2)		2019		2020		2021		2022		2023 and thereafter		Other
Debt obligations(1)	$	2,500,000	$	—	$	—	$	250,000	$	—	$	500,000	$	1,750,000	$	—
Interest payment associated with all debt obligations(3)	786,928		54,762		109,571		105,354		101,113		90,800		325,328		—
Purchase commitments(4)	480,814		451,614		29,049		47		104		—		—		—
Income taxes payable(5)	70,590		—		—		—		—		—		—		70,590
Operating leases	35,218		10,063		7,478		6,031		4,561		2,534		4,551		—
Cash long-term incentive program(6)	120,188		12,899		47,371		35,249		24,669		—		—		—
Pension obligations(7)	23,163		776		1,586		1,534		1,705		2,574		14,988		—
Executive Deferred Savings Plan(8)	192,849		—		—		—		—		—		—		192,849
Transition tax payable(9)	350,492		45,471		26,524		26,524		26,524		26,524		198,925
Other(10)	7,590		158		5,460		1,529		332		111		—		—
Total contractual cash obligations	$	4,567,832	$	575,743	$	227,039	$	426,268	$	159,008	$	622,543	$	2,293,792	$	263,439

__________________

(1) Represents $2.25 billion aggregate principal amount of Senior Notes due from fiscal year 2020 to fiscal year 2035, and $250.0 million aggregate principal amount of borrowings under the Revolving Credit Facility due on November 30, 2022.

(2) For remaining six months of fiscal year 2018.

(3) The interest payments associated with the Senior Notes obligations included in the table above are based on the principal amount multiplied by the applicable coupon rate for each series of Senior Notes. Our future interest payments are subject to change if our then effective credit rating is below investment grade as discussed above. Borrowings under the Revolving Credit Facility will bear interest, at our option, at either: (i) the Alternative Base Rate (“ABR”) plus a spread, or (ii) the London Interbank Offered Rate (“LIBOR”) plus a spread. As of December 31, 2017, we elected to pay interest on the borrowed amount under the Revolving Credit Facility at LIBOR plus a spread of 125 bps and we utilized the existing interest rates to project our estimated interest payments on the borrowed amount under the Revolving Credit Facility through fiscal year 2023. The interest payment under the Revolving Credit Facility for the undrawn balance is payable at 15 bps as a commitment fee based on the daily undrawn balance and we utilized the existing rate for the projected interest payments included in the table above. Our future interest payments for the Revolving Credit Facility is subject to change due to future fluctuations in the LIBOR rates or ABR rates if then elected, as well as any upgrades or downgrades to our then effective credit rating.

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(4) Represents an estimate of significant commitments to purchase inventory from our suppliers as well as an estimate of significant purchase commitments associated with other goods and services in the ordinary course of business. Our liability under these purchase commitments is generally restricted to a forecasted time-horizon as mutually agreed upon between the parties. This forecasted time-horizon can vary among different suppliers. Actual expenditures will vary based upon the volume of the transactions and length of contractual service provided. In addition, the amounts paid under these arrangements may be less in the event the arrangements are renegotiated or canceled. Certain agreements provide for potential cancellation penalties.

(5) Represents the estimated income tax payable obligation related to uncertain tax positions as well as related accrued interest. We are unable to make a reasonably reliable estimate of the timing of payments in individual years due to uncertainties in the timing of tax audit outcomes.

(6) Represents the amount committed under our cash long-term incentive program. The expected payment after estimated forfeitures is approximately $97.2 million.

(7) Represents an estimate of expected benefit payments up to fiscal year 2027 that was actuarially determined and excludes the minimum cash required to contribute to the plan. As of December 31, 2017, our defined benefit pension plans do not have material required minimum cash contribution obligations.

(8) Represents the amount committed under our non-qualified executive deferred compensation plan. We are unable to make a reasonably reliable estimate of the timing of payments in individual years due to the uncertainties in the timing around participant’s separation and any potential changes that participants may decide to make to the previous distribution elections.

(9) Represents our reasonable estimate of a provisional tax amount for the transition tax liability associated with our deemed repatriation of accumulated foreign earnings as a result from the enactment of the Tax Cuts and Jobs-Act into law on December 22, 2017.

(10) Represents amounts committed for accrued dividends payable, substantially all of which are for the special cash dividend for the unvested restricted stock units as of the dividend record date as well as quarterly cash dividends for unvested restricted stock units granted with dividend equivalent rights. For additional details, refer to Note 8, “Equity and Long-term Incentive Compensation Plans,” to the condensed consolidated financial statements.

We have adopted a cash-based long-term incentive (“Cash LTI”) program for many of our employees as part of our employee compensation program. Cash LTI awards issued to employees under the Cash Long-Term Incentive Plan (“Cash LTI Plan”) generally vest in three or four equal installments, with one-third or one-fourth of the aggregate amount of the Cash LTI award vesting on each yearly anniversary of the grant date over a three or four-year period. In order to receive payments under the Cash LTI Plan, participants must remain employed by us as of the applicable award vesting date.

We have agreements with financial institutions to sell certain of our trade receivables and promissory notes from customers without recourse. In addition, we periodically sell certain letters of credit (“LCs”), without recourse, received from customers in payment for goods and services.

The following table shows total receivables sold under factoring agreements and proceeds from sales of LCs for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Receivables sold under factoring agreements	$	47,232	$	28,242	$	79,133	$	84,975
Proceeds from sales of LCs	$	—	$	9,740	$	5,571	$	13,148

Factoring and LC fees for the sale of certain trade receivables were recorded in other expense (income), net and were not material for the periods presented.

We maintain guarantee arrangements available through various financial institutions for up to $21.8 million, of which $16.0 million had been issued as of December 31, 2017, primarily to fund guarantees to customs authorities for value-added tax (“VAT”) and other operating requirements of our subsidiaries in Europe and Asia.

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We provide standard warranty coverage on our systems for 40 hours per week for 12 months, providing labor and parts necessary to repair the systems during the warranty period. We account for the estimated warranty cost as a charge to costs of revenues when revenue is recognized. The estimated warranty cost is based on historical product performance and field expenses. The actual product performance and/or field expense profiles may differ, and in those cases we adjust our warranty accruals accordingly. The difference between the estimated and actual warranty costs tends to be larger for new product introductions as there is limited historical product performance to estimate warranty expense; our warranty charge estimates for more mature products with longer product performance histories tend to be more stable. Non-standard warranty coverage generally includes services incremental to the standard 40 hours per week coverage for 12 months. See Note 13, “Commitments and Contingencies,” to the condensed consolidated financial statements for additional details.

Working Capital:

Working capital was $3.19 billion as of December 31, 2017, which is an increase of $88.5 million compared to our working capital of $3.10 billion as of June 30, 2017. As of December 31, 2017, our principal sources of liquidity consisted of $2.76 billion of cash, cash equivalents and marketable securities. Our liquidity is affected by many factors, some of which are based on the normal ongoing operations of the business, and others of which relate to the uncertainties of global and regional economies and the semiconductor and the semiconductor equipment industries. Although cash requirements will fluctuate based on the timing and extent of these factors, we believe that cash generated from operations, together with the liquidity provided by existing cash and cash equivalents balances and our $750.0 million Revolving Credit Facility, will be sufficient to satisfy our liquidity requirements associated with working capital needs, capital expenditures, cash dividends, stock repurchases and other contractual obligations, including repayment of outstanding debt, for at least the next 12 months.

Our credit ratings as of December 31, 2017 are summarized below:

Rating Agency	Rating
Fitch	BBB+
Moody’s	Baa2
Standard & Poor’s	BBB

Factors that can affect our credit ratings include changes in our operating performance, the economic environment, conditions in the semiconductor and semiconductor equipment industries, our financial position, and changes in our business strategy.

Off-Balance Sheet Arrangements

Under our foreign currency risk management strategy, we utilize derivative instruments to protect our earnings and cash flows from unanticipated fluctuations in earnings and cash flows caused by volatility in currency exchange rates. This financial exposure is monitored and managed as an integral part of our overall risk management program which focuses on the unpredictability of financial markets and seeks to reduce the potentially adverse effects that the volatility of these markets may have on our operating results. We continue our policy of hedging our current and forecasted foreign currency exposures with hedging instruments having tenors of up to 18 months (see Note 14, “Derivative Instruments and Hedging Activities,” to the condensed consolidated financial statements for additional details). Our outstanding hedge contracts, with maximum remaining maturities of approximately 13 months as of December 31, 2017 and ten months as of June 30, 2017, respectively, were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Cash flow hedge contracts
Purchase	$	25,923	$	19,305
Sell	$	85,466	$	128,672
Other foreign currency hedge contracts
Purchase	$	144,442	$	165,563
Sell	$	155,260	$	118,504

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In October 2014, in anticipation of the issuance of the Senior Notes, we entered into a series of forward contracts (“Rate Lock Agreements”) to lock the benchmark rate on a portion of the Senior Notes. The objective of the Rate Lock Agreements was to hedge the risk associated with the variability in interest rates due to the changes in the benchmark rate leading up to the closing of the intended financing, on the notional amount being hedged. The Rate Lock Agreements had a notional amount of $1.00 billion in aggregate which matured in the second quarter of the fiscal year ended June 30, 2015. The Rate Lock Agreements were terminated on the date of pricing of the $1.25 billion of 4.650% Senior Notes due in 2024 and we recorded the fair value of $7.5 million as a gain within accumulated other comprehensive income (loss) as of December 31, 2014. We recognized $0.2 million for each of the three months ended December 31, 2017 and 2016 and $0.4 million each of the six months ended December 31, 2017 and 2016 for the amortization of the gain recognized in accumulated other comprehensive income (loss), which amount reduced the interest expense. As of December 31, 2017, the unamortized portion of the fair value of the forward contracts for the rate lock agreements was $5.2 million.

Indemnification Obligations. Subject to certain limitations, we are obligated to indemnify our current and former directors, officers and employees with respect to certain litigation matters and investigations that arise in connection with their service to us. These obligations arise under the terms of our certificate of incorporation, our bylaws, applicable contracts, and Delaware and California law. The obligation to indemnify generally means that we are required to pay or reimburse the individuals’ reasonable legal expenses and possibly damages and other liabilities incurred in connection with these matters. For example, we have paid or reimbursed legal expenses incurred in connection with the investigation of our historical stock option practices and the related litigation and government inquiries by a number of our current and former directors, officers and employees. Although the maximum potential amount of future payments we could be required to make under the indemnification obligations generally described in this paragraph is theoretically unlimited, we believe the fair value of this liability, to the extent estimable, is appropriately considered within the reserve we have established for currently pending legal proceedings.

We are a party to a variety of agreements pursuant to which we may be obligated to indemnify the other party with respect to certain matters. Typically, these obligations arise in connection with contracts and license agreements or the sale of assets, under which we customarily agree to hold the other party harmless against losses arising from, or provide customers with other remedies to protect against, bodily injury or damage to personal property caused by our products, non-compliance with our product performance specifications, infringement by our products of third-party intellectual property rights and a breach of warranties, representations and covenants related to matters such as title to assets sold, validity of certain intellectual property rights, non-infringement of third-party rights, and certain income tax-related matters. In each of these circumstances, payment by us is typically subject to the other party making a claim to and cooperating with us pursuant to the procedures specified in the particular contract. This usually allows us to challenge the other party’s claims or, in case of breach of intellectual property representations or covenants, to control the defense or settlement of any third-party claims brought against the other party. Further, our obligations under these agreements may be limited in terms of amounts, activity (typically at our option to replace or correct the products or terminate the agreement with a refund to the other party), and duration. In some instances, we may have recourse against third parties and/or insurance covering certain payments made by us.

In addition, we may in limited circumstances enter into agreements that contain customer-specific commitments on pricing, tool reliability, spare parts stocking levels, service response time and other commitments. Furthermore, we may give these customers limited audit or inspection rights to enable them to confirm that we are complying with these commitments. If a customer elects to exercise its audit or inspection rights, we may be required to expend significant resources to support the audit or inspection, as well as to defend or settle any dispute with a customer that could potentially arise out of such audit or inspection. To date, we have made no significant accruals in our condensed consolidated financial statements for this contingency. While we have not in the past incurred significant expenses for resolving disputes regarding these types of commitments, we cannot make any assurance that we will not incur any such liabilities in the future.

It is not possible to predict the maximum potential amount of future payments under these or similar agreements due to the conditional nature of our obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by us under these agreements have not had a material effect on our business, financial condition, results of operations or cash flows.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to financial market risks, including changes in interest rates, foreign currency exchange rates and marketable equity security prices. To mitigate these risks, we utilize derivative financial instruments, such as foreign currency hedges. All of the potential changes noted below are based on sensitivity analyses performed on our financial position as of December 31, 2017. Actual results may differ materially.

As of December 31, 2017, we had an investment portfolio of fixed income securities of $1.68 billion. These securities, as with all fixed income instruments, are subject to interest rate risk and will decline in value if market interest rates increase. If market interest rates were to increase immediately and uniformly by 100 bps from levels as of December 31, 2017, the fair value of the portfolio would have declined by $20.2 million.

In November 2014, we issued $2.50 billion aggregate principal amount of fixed rate senior, unsecured long-term notes (collectively referred to as “Senior Notes”). The fair market value of long-term fixed interest rate notes is subject to interest rate risk. Generally, the fair market value of fixed interest rate notes will increase as interest rates fall and decrease as interest rates rise. As of December 31, 2017, the fair value and the book value of our Senior Notes were $2.41 billion and $2.25 billion, respectively, due in various fiscal years ranging from 2020 to 2035. Additionally, the interest expense for the Senior Notes is subject to interest rate adjustments following a downgrade of our credit ratings below investment grade by the credit rating agencies. Following a rating change below investment grade, the stated interest rate for each series of Senior Notes may increase between 25 bps to 100 bps based on the adjusted credit rating. Refer to Note 7, “Debt,” to the condensed consolidated financial statements in Part I, Item 1 and Management’s Discussion and Analysis of Financial Condition and Results of Operations, “Liquidity and Capital Resources,” in Part I, Item 2 for additional details. Factors that can affect our credit ratings include changes in our operating performance, the economic environment, conditions in the semiconductor and semiconductor equipment industries, our financial position, and changes in our business strategy. As of December 31, 2017, if our credit rating was downgraded below investment grade by Moody’s and S&P, the maximum potential increase to our annual interest expense on the Senior Notes, considering a 200 bps increase to the stated interest rate for each series of our Senior Notes, is estimated to be approximately $45.0 million.

In November 2017, we entered into a Credit Agreement (the “Credit Agreement”) for a $750.0 million five-year unsecured revolving credit facility (the “Revolving Credit Facility”), which replaced our prior Credit Agreement. Subject to the terms of the Credit Agreement, the Revolving Credit Facility may be increased in an amount up to $250.0 million in the aggregate. As of December 31, 2017 after giving effect to the borrowings made on the closing date, we had outstanding $250.0 million aggregate principal amount of borrowings under the Revolving Credit Facility. We elected to pay interest on the borrowed amount under the Revolving Credit Facility at the London Interbank Offered Rate (“LIBOR”) plus a spread. The spread ranges from 100 bps to 175 bps based on the adjusted credit rating. The fair value of the borrowings under the Revolving Credit Facility is subject to interest rate risk only to the extent of the fixed spread portion of the interest rates which does not fluctuate with change in interest rates. We are also obligated to pay an annual commitment fee of 15 bps on the daily undrawn balance of the Revolving Credit Facility which is also subject to an adjustment in conjunction with our credit rating downgrades or upgrades. The annual commitment fee ranges from 10 bps to 25 bps on the daily undrawn balance of the Revolving Credit Facility, depending upon the then effective credit rating. As of December 31, 2017, if LIBOR-based interest rates increased by 100 bps, the change would increase our annual interest expense annually by approximately $2.4 million as it relates to our borrowings under the Revolving Credit Facility. Additionally, as of December 31, 2017, if our credit ratings were downgraded to be below investment grade, the maximum potential increase to our annual interest expense for the Revolving Credit Facility, using the highest range of the ranges discussed above, is estimated to be approximately $1.8 million.

See Note 4, “Marketable Securities,” to the condensed consolidated financial statements in Part I, Item 1; Management’s Discussion and Analysis of Financial Condition and Results of Operations, “Liquidity and Capital Resources,” in Part I, Item 2; and Risk Factors in Part II, Item 1A of this Quarterly Report on Form 10-Q for a description of recent market events that may affect the value of the investments in our portfolio that we held as of December 31, 2017.

As of December 31, 2017, we had net forward and option contracts to sell $70.4 million in foreign currency in order to hedge certain currency exposures (see Note 14, “Derivative Instruments and Hedging Activities,” to the condensed consolidated financial statements for additional details). If we had entered into these contracts on December 31, 2017, the U.S. dollar equivalent would have been $66.3 million. A 10% adverse move in all currency exchange rates affecting the contracts would decrease the fair value of the contracts by $29.6 million. However, if this occurred, the fair value of the underlying exposures hedged by the contracts would increase by a similar amount. Accordingly, we believe that, as a result of the hedging of certain of our foreign currency exposure, changes in most relevant foreign currency exchange rates should have no material impact on our income or cash flows.

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ITEM 4 CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures and Related CEO and CFO Certifications

Evaluation of Disclosure Controls and Procedures

The Company conducted an evaluation of the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) (“Disclosure Controls”) as of the end of the period covered by this Quarterly Report on Form 10-Q (this “Report”) required by Exchange Act Rules 13a-15(b) or 15d-15(b). The controls evaluation was conducted under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”). Based on this evaluation, the CEO and CFO have concluded that as of the end of the period covered by this Report the Company’s Disclosure Controls were effective at a reasonable assurance level.

Attached as exhibits to this Report are certifications of the CEO and CFO, which are required in accordance with Rule 13a-14 of the Exchange Act. This Controls and Procedures section includes the information concerning the controls evaluation referred to in the certifications, and it should be read in conjunction with the certifications for a more complete understanding of the topics presented.

Definition of Disclosure Controls

Disclosure Controls are controls and procedures designed to reasonably assure that information required to be disclosed in the Company’s reports filed under the Exchange Act, such as this Report, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure Controls are also designed to reasonably assure that such information is accumulated and communicated to the Company’s management, including the CEO and CFO, as appropriate to allow timely decisions regarding required disclosure. The Company’s Disclosure Controls include components of its internal control over financial reporting, which consists of control processes designed to provide reasonable assurance regarding the reliability of its financial reporting and the preparation of financial statements in accordance with generally accepted accounting principles in the United States. To the extent that components of the Company’s internal control over financial reporting are included within its Disclosure Controls, they are included in the scope of the Company’s annual controls evaluation.

Limitations on the Effectiveness of Controls

The Company’s management, including the CEO and CFO, does not expect that the Company’s Disclosure Controls or internal control over financial reporting will prevent all error and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision making can be faulty and that breakdowns can occur because of simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting during the three months ended December 31, 2017 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

The information set forth above under Note 12, “Litigation and Other Legal Matters,” to the condensed consolidated financial statements in Item 1 of Part 1 is incorporated herein by reference.

ITEM 1A. RISK FACTORS    

A description of factors that could materially affect our business, financial condition or operating results is provided below.

Risks Associated with Our Industry

Ongoing changes in the technology industry, as well as the semiconductor industry in particular, could expose our business to significant risks.

The semiconductor equipment industry and other industries that we serve are constantly developing and changing over time. Many of the risks associated with operating in these industries are comparable to the risks faced by all technology companies, such as the uncertainty of future growth rates in the industries that we serve, pricing trends in the end-markets for consumer electronics and other products (which place a growing emphasis on our customers’ cost of ownership), changes in our customers’ capital spending patterns and, in general, an environment of constant change and development, including decreasing product and component dimensions; use of new materials; and increasingly complex device structures, applications and process steps. If we fail to appropriately adjust our cost structure and operations to adapt to any of these trends, or, with respect to technological advances, if we do not timely develop new technologies and products that successfully anticipate and address these changes, we could experience a material adverse effect on our business, financial condition and operating results.

In addition, we face a number of risks specific to ongoing changes in the semiconductor industry, as the significant majority of our sales are made to semiconductor manufacturers. Some of the trends that our management monitors in operating our business include the following:

• the potential for reversal of the long-term historical trend of declining cost per transistor with each new generation of technological advancement within the semiconductor industry, and the adverse impact that such reversal may have upon our business;

• the increasing cost of building and operating fabrication facilities and the impact of such increases on our customers’ investment decisions;

• differing market growth rates and capital requirements for different applications, such as memory, logic and foundry;

• lower level of process control adoption by our memory customers compared to our foundry and logic customers;

• our customers’ reuse of existing and installed products, which may decrease their need to purchase new products or solutions at more advanced technology nodes;

• the emergence of disruptive technologies that change the prevailing semiconductor manufacturing processes (or the economics associated with semiconductor manufacturing) and, as a result, also impact the inspection and metrology requirements associated with such processes;

• the higher design costs for the most advanced integrated circuits, which could economically constrain leading-edge manufacturing technology customers to focus their resources on only the large, technologically advanced products and applications;

• the possible introduction of integrated products by our larger competitors that offer inspection and metrology functionality in addition to managing other semiconductor manufacturing processes;

• changes in semiconductor manufacturing processes that are extremely costly for our customers to implement and, accordingly, our customers could reduce their available budgets for process control equipment by reducing inspection and metrology sampling rates for certain technologies;

• the bifurcation of the semiconductor manufacturing industry into (a) leading edge manufacturers driving continued research and development into next-generation products and technologies and (b) other manufacturers that are content with existing (including previous generation) products and technologies;

• the ever escalating cost of next-generation product development, which may result in joint development programs between us and our customers or government entities to help fund such programs that could restrict our control of, ownership of and profitability from the products and technologies developed through those programs; and

• the entry by some semiconductor manufacturers into collaboration or sharing arrangements for capacity, cost or risk with other manufacturers, as well as increased outsourcing of their manufacturing activities, and greater focus only on specific markets or applications, whether in response to adverse market conditions or other market pressures.

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Any of the changes described above may negatively affect our customers’ rate of investment in the capital equipment that we produce, which could result in downward pressure on our prices, customer orders, revenues and gross margins. If we do not successfully manage the risks resulting from any of these or other potential changes in our industries, our business, financial condition and operating results could be adversely impacted.

We are exposed to risks associated with a highly concentrated customer base.

Our customer base, particularly in the semiconductor industry, historically has been highly concentrated due to corporate consolidation, acquisitions and business closures. In this environment, orders from a relatively limited number of manufacturers have accounted for, and are expected to continue to account for, a substantial portion of our sales. This increasing concentration exposes our business, financial condition and operating results to a number of risks, including the following:

• The mix and type of customers, and sales to any single customer, may vary significantly from quarter to quarter and from year to year, which exposes our business and operating results to increased volatility tied to individual customers.

• New orders from our foundry customers in the past several years have constituted a significant portion of our total orders. This concentration increases the impact that future business or technology changes within the foundry industry may have on our business, financial condition and operating results.

• In a highly concentrated business environment, if a particular customer does not place an order, or if they delay or cancel orders, we may not be able to replace the business. Furthermore, because our products are configured to each customer’s specifications, any changes, delays or cancellations of orders may result in significant, non-recoverable costs.

• As a result of this consolidation, the customers that survive the consolidation represent a greater portion of our sales and, consequently, have greater commercial negotiating leverage. Many of our large customers have more aggressive policies regarding engaging alternative, second-source suppliers for the products we offer and, in addition, may seek and, on occasion, receive pricing, payment, intellectual property-related or other commercial terms that may have an adverse impact on our business. Any of these changes could negatively impact our prices, customer orders, revenues and gross margins.

• Certain customers have undergone significant ownership changes, created alliances with other companies, experienced management changes or have outsourced manufacturing activities, any of which may result in additional complexities in managing customer relationships and transactions. Any future change in ownership or management of our existing customers may result in similar challenges, including the possibility of the successor entity or new management deciding to select a competitor’s products.

• The highly concentrated business environment also increases our exposure to risks related to the financial condition of each of our customers. For example, as a result of the challenging economic environment during fiscal year 2009, we were (and in some cases continue to be) exposed to additional risks related to the continued financial viability of certain of our customers. To the extent our customers experience liquidity issues in the future, we may be required to incur additional bad debt expense with respect to receivables owed to us by those customers. In addition, customers with liquidity issues may be forced to reduce purchases of our equipment, delay deliveries of our products, discontinue operations or may be acquired by one of our customers, and in either case such event would have the effect of further consolidating our customer base.

• Semiconductor manufacturers generally must commit significant resources to qualify, install and integrate process control and yield management equipment into a semiconductor production line. We believe that once a semiconductor manufacturer selects a particular supplier’s process control and yield management equipment, the manufacturer generally relies upon that equipment for that specific production line application for an extended period of time. Accordingly, we expect it to be more difficult to sell our products to a given customer for that specific production line application and other similar production line applications if that customer initially selects a competitor’s equipment. Similarly, we expect it to be challenging for a competitor to sell its products to a given customer for a specific production line application if that customer initially selects our equipment.

• Prices differ among the products we offer for different applications due to differences in features offered or manufacturing costs. If there is a shift in demand by our customers from our higher-priced to lower-priced products, our gross margin and revenue would decrease. In addition, when products are initially introduced, they tend to have higher costs because of initial development costs and lower production volumes relative to the previous product generation, which can impact gross margin.

Any of these factors could have a material adverse effect on our business, financial condition and operating results.

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The semiconductor equipment industry has been cyclical. The purchasing decisions of our customers are highly dependent on the economies of both the local markets in which they are located and the semiconductor industry worldwide. If we fail to respond to industry cycles, our business could be seriously harmed.

The timing, length and severity of the up-and-down cycles in the semiconductor equipment industry are difficult to predict. The historically cyclical nature of the primary industry in which we operate is largely a function of our customers’ capital spending patterns and need for expanded manufacturing capacity, which in turn are affected by factors such as capacity utilization, consumer demand for products, inventory levels and our customers’ access to capital. Cyclicality affects our ability to accurately predict future revenue and, in some cases, future expense levels. During down cycles in our industry, the financial results of our customers may be negatively impacted, which could result not only in a decrease in, or cancellation or delay of, orders (which are generally subject to cancellation or delay by the customer with limited or no penalty) but also a weakening of their financial condition that could impair their ability to pay for our products or our ability to recognize revenue from certain customers. Our ability to recognize revenue from a particular customer may also be negatively impacted by the customer’s funding status, which could be weakened not only by adverse business conditions or inaccessibility to capital markets for any number of macroeconomic or company-specific reasons, but also by funding limitations imposed by the customer’s unique organizational structure. Any of these factors could negatively impact our business, operating results and financial condition.

When cyclical fluctuations result in lower than expected revenue levels, operating results may be adversely affected and cost reduction measures may be necessary for us to remain competitive and financially sound. During periods of declining revenues, we must be in a position to adjust our cost and expense structure to prevailing market conditions and to continue to motivate and retain our key employees. If we fail to respond, or if our attempts to respond fail to accomplish our intended results, then our business could be seriously harmed. Furthermore, any workforce reductions and cost reduction actions that we adopt in response to down cycles may result in additional restructuring charges, disruptions in our operations and loss of key personnel. In addition, during periods of rapid growth, we must be able to increase manufacturing capacity and personnel to meet customer demand. We can provide no assurance that these objectives can be met in a timely manner in response to industry cycles. Each of these factors could adversely impact our operating results and financial condition.

In addition, our management typically provides quarterly forecasts for certain financial metrics, which, when made, are based on business and operational forecasts that are believed to be reasonable at the time. However, largely due to the historical cyclicality of our business and the industries in which we operate, and the fact that business conditions in our industries can change very rapidly as part of these cycles, our actual results may vary (and have varied in the past) from forecasted results. These variations can occur for any number of reasons, including, but not limited to, unexpected changes in the volume or timing of customer orders, product shipments or product acceptance; an inability to adjust our operations rapidly enough to adapt to changing business conditions; or a different than anticipated effective tax rate. The impact on our business of delays or cancellations of customer orders may be exacerbated by the short lead times that our customers expect between order placement and product shipment. This is because order delays and cancellations may lead not only to lower revenues, but also, due to the advance work we must do in anticipation of receiving a product order to meet the expected lead times, to significant inventory write-offs and manufacturing inefficiencies that decrease our gross margin. Any of these factors could materially and adversely affect our financial results for a particular quarter and could cause those results to differ materially from financial forecasts we have previously provided. We provide these forecasts with the intent of giving investors and analysts a better understanding of management’s expectations for the future, but those reviewing such forecasts must recognize that such forecasts are comprised of, and are themselves, forward-looking statements subject to the risks and uncertainties described in this Item 1A and elsewhere in this report and in our other public filings and public statements. If our operating or financial results for a particular period differ from our forecasts or the expectations of investment analysts, or if we revise our forecasts, the market price of our common stock could decline.

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Risks Related to Our Business Model and Capital Structure

If we do not develop and introduce new products and technologies in a timely manner in response to changing market conditions or customer requirements, our business could be seriously harmed.

Success in the semiconductor equipment industry depends, in part, on continual improvement of existing technologies and rapid innovation of new solutions. The primary driver of technology advancement in the semiconductor industry has been to shrink the lithography that prints the circuit design on semiconductor chips. That driver appears to be slowing, which may cause semiconductor manufacturers to delay investments in equipment, investigate more complex device architectures, use new materials and develop innovative fabrication processes. These and other evolving customer plans and needs require us to respond with continued development programs and cut back or discontinue older programs, which may no longer have industry-wide support. Technical innovations are inherently complex and require long development cycles and appropriate staffing of highly qualified employees. Our competitive advantage and future business success depend on our ability to accurately predict evolving industry standards, develop and introduce new products and solutions that successfully address changing customer needs, win market acceptance of these new products and solutions, and manufacture these new products in a timely and cost-effective manner. Our failure to accurately predict evolving industry standards and develop as well as offer competitive technology solutions in a timely manner with cost-effective products could result in loss of market share, unanticipated costs, and inventory obsolescence, which would adversely impact our business, operating results and financial condition.

We must continue to make significant investments in research and development in order to enhance the performance, features and functionality of our products, to keep pace with competitive products and to satisfy customer demands. Substantial research and development costs typically are incurred before we confirm the technical feasibility and commercial viability of a new product, and not all development activities result in commercially viable products. There can be no assurance that revenues from future products or product enhancements will be sufficient to recover the development costs associated with such products or enhancements. In addition, we cannot be sure that these products or enhancements will receive market acceptance or that we will be able to sell these products at prices that are favorable to us. Our business will be seriously harmed if we are unable to sell our products at favorable prices or if the market in which we operate does not accept our products.

In addition, the complexity of our products exposes us to other risks. We regularly recognize revenue from a sale upon shipment of the applicable product to the customer (even before receiving the customer’s formal acceptance of that product) in certain situations, including sales of products for which installation is considered perfunctory, transactions in which the product is sold to an independent distributor and we have no installation obligations, and sales of products where we have previously delivered the same product to the same customer location and that prior delivery has been accepted. However, our products are very technologically complex and rely on the interconnection of numerous subcomponents (all of which must perform to their respective specifications), so it is conceivable that a product for which we recognize revenue upon shipment may ultimately fail to meet the overall product’s required specifications. In such a situation, the customer may be entitled to certain remedies, which could materially and adversely affect our operating results for various periods and, as a result, our stock price.

We derive a substantial percentage of our revenues from sales of inspection products. As a result, any delay or reduction of sales of these products could have a material adverse effect on our business, financial condition and operating results. The continued customer demand for these products and the development, introduction and market acceptance of new products and technologies are critical to our future success.

Our success is dependent in part on our technology and other proprietary rights. If we are unable to maintain our lead or protect our proprietary technology, we may lose valuable assets.

Our success is dependent in part on our technology and other proprietary rights. We own various United States and international patents and have additional pending patent applications relating to some of our products and technologies. The process of seeking patent protection is lengthy and expensive, and we cannot be certain that pending or future applications will actually result in issued patents or that issued patents will be of sufficient scope or strength to provide meaningful protection or commercial advantage to us. Other companies and individuals, including our larger competitors, may develop technologies and obtain patents relating to our business that are similar or superior to our technology or may design around the patents we own, adversely affecting our business. In addition, we at times engage in collaborative technology development efforts with our customers and suppliers, and these collaborations may constitute a key component of certain of our ongoing technology and product research and development projects. The termination of any such collaboration, or delays caused by disputes or other unanticipated challenges that may arise in connection with any such collaboration, could significantly impair our research and development efforts, which could have a material adverse impact on our business and operations.

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We also maintain trademarks on certain of our products and services and claim copyright protection for certain proprietary software and documentation. However, we can give no assurance that our trademarks and copyrights will be upheld or successfully deter infringement by third parties.

While patent, copyright and trademark protection for our intellectual property is important, we believe our future success in highly dynamic markets is most dependent upon the technical competence and creative skills of our personnel. We attempt to protect our trade secrets and other proprietary information through confidentiality and other agreements with our customers, suppliers, employees and consultants and through other security measures. We also maintain exclusive and non-exclusive licenses with third parties for strategic technology used in certain products. However, these employees, consultants and third parties may breach these agreements, and we may not have adequate remedies for wrongdoing. In addition, the laws of certain territories in which we develop, manufacture or sell our products may not protect our intellectual property rights to the same extent as do the laws of the United States. In any event, the extent to which we can protect our trade secrets through the use of confidentiality agreements is limited, and our success will depend to a significant extent on our ability to innovate ahead of our competitors.

Our future performance depends, in part, upon our ability to continue to compete successfully worldwide.

Our industry includes large manufacturers with substantial resources to support customers worldwide. Some of our competitors are diversified companies with greater financial resources and more extensive research, engineering, manufacturing, marketing, and customer service and support capabilities than we possess. We face competition from companies whose strategy is to provide a broad array of products and services, some of which compete with the products and services that we offer. These competitors may bundle their products in a manner that may discourage customers from purchasing our products, including pricing such competitive tools significantly below our product offerings. In addition, we face competition from smaller emerging semiconductor equipment companies whose strategy is to provide a portion of the products and services that we offer, using innovative technology to sell products into specialized markets. The strength of our competitive positions in many of our existing markets is largely due to our leading technology, which is the result of continuing significant investments in product research and development. However, we may enter new markets, whether through acquisitions or new internal product development, in which competition is based primarily on product pricing, not technological superiority. Further, some new growth markets that emerge may not require leading technologies. Loss of competitive position in any of the markets we serve, or an inability to sell our products on favorable commercial terms in new markets we may enter, could negatively affect our prices, customer orders, revenues, gross margins and market share, any of which would negatively affect our operating results and financial condition.

Our business would be harmed if we do not receive parts sufficient in number and performance to meet our production requirements and product specifications in a timely and cost-effective manner.

We use a wide range of materials in the production of our products, including custom electronic and mechanical components, and we use numerous suppliers to supply these materials. We generally do not have guaranteed supply arrangements with our suppliers. Because of the variability and uniqueness of customers’ orders, we do not maintain an extensive inventory of materials for manufacturing. Through our business interruption planning, we seek to minimize the risk of production and service interruptions and/or shortages of key parts by, among other things, monitoring the financial stability of key suppliers, identifying (but not necessarily qualifying) possible alternative suppliers and maintaining appropriate inventories of key parts. Although we make reasonable efforts to ensure that parts are available from multiple suppliers, certain key parts are available only from a single supplier or a limited group of suppliers. Also, key parts we obtain from some of our suppliers incorporate the suppliers’ proprietary intellectual property; in those cases we are increasingly reliant on third parties for high-performance, high-technology components, which reduces the amount of control we have over the availability and protection of the technology and intellectual property that is used in our products. In addition, if certain of our key suppliers experience liquidity issues and are forced to discontinue operations, which is a heightened risk during economic downturns, it could affect their ability to deliver parts and could result in delays for our products. Similarly, especially with respect to suppliers of high-technology components, our suppliers themselves have increasingly complex supply chains, and delays or disruptions at any stage of their supply chains may prevent us from obtaining parts in a timely manner and result in delays for our products. Our operating results and business may be adversely impacted if we are unable to obtain parts to meet our production requirements and product specifications, or if we are only able to do so on unfavorable terms. Furthermore, a supplier may discontinue production of a particular part for any number of reasons, including the supplier’s financial condition or business operational decisions, which would require us to purchase, in a single transaction, a large number of such discontinued parts in order to ensure that a continuous supply of such parts remains available to our customers. Such “end-of-life” parts purchases could result in significant expenditures by us in a particular period, and ultimately any unused parts may result in a significant inventory write-off, either of which could have an adverse impact on our financial condition and results of operations for the applicable periods.

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If we fail to operate our business in accordance with our business plan, our operating results, business and stock price may be significantly and adversely impacted.

We attempt to operate our business in accordance with a business plan that is established annually, revised frequently (generally quarterly), and reviewed by management even more frequently (at least monthly). Our business plan is developed based on a number of factors, many of which require estimates and assumptions, such as our expectations of the economic environment, future business levels, our customers’ willingness and ability to place orders, lead-times, and future revenue and cash flow. Our budgeted operating expenses, for example, are based in part on our future revenue expectations. However, our ability to achieve our anticipated revenue levels is a function of numerous factors, including the volatile and historically cyclical nature of our primary industry, customer order cancellations, macroeconomic changes, operational matters regarding particular agreements, our ability to manage customer deliveries, the availability of resources for the installation of our products, delays or accelerations by customers in taking deliveries and the acceptance of our products (for products where customer acceptance is required before we can recognize revenue from such sales), our ability to operate our business and sales processes effectively, and a number of the other risk factors set forth in this Item 1A.

Because our expenses are in most cases relatively fixed in the short term, any revenue shortfall below expectations could have an immediate and significant adverse effect on our operating results. Similarly, if we fail to manage our expenses effectively or otherwise fail to maintain rigorous cost controls, we could experience greater than anticipated expenses during an operating period, which would also negatively affect our results of operations. If we fail to operate our business consistent with our business plan, our operating results in any period may be significantly and adversely impacted. Such an outcome could cause customers, suppliers or investors to view us as less stable, or could cause us to fail to meet financial analysts’ revenue or earnings estimates, any of which could have an adverse impact on our stock price.

In addition, our management is constantly striving to balance the requirements and demands of our customers with the availability of resources, the need to manage our operating model and other factors. In furtherance of those efforts, we often must exercise discretion and judgment as to the timing and prioritization of manufacturing, deliveries, installations and payment scheduling. Any such decisions may impact our ability to recognize revenue, including the fiscal period during which such revenue may be recognized, with respect to such products, which could have a material adverse effect on our business, results of operations or stock price.

Our capital structure is highly leveraged.

As of December 31, 2017, we had $2.50 billion aggregate principal amount of outstanding indebtedness, consisting of $2.25 billion aggregate principal amount of senior, unsecured long-term notes and $250.0 million borrowed under our Revolving Credit Facility, which includes an additional $500.0 million in unfunded commitments. We may incur additional indebtedness in the future by accessing the unfunded portion of our revolving credit facility and/or entering into new financing arrangements. Our ability to pay interest and repay the principal of our current indebtedness is dependent upon our ability to manage our business operations, our credit rating, the ongoing interest rate environment and the other risk factors discussed in this section. There can be no assurance that we will be able to manage any of these risks successfully.

In addition, the interest rates of the senior, unsecured long-term notes may be subject to adjustments from time to time if Moody’s Investors Service, Inc. (“Moody’s”), Standard & Poor’s Ratings Services (“S&P”) or, under certain circumstances, a substitute rating agency selected by us as a replacement for Moody’s or S&P, as the case may be (a “Substitute Rating Agency”), downgrades (or subsequently upgrades) its rating assigned to the respective series of notes such that the adjusted rating is below investment grade. Accordingly, changes by Moody’s, S&P, or a Substitute Rating Agency to the rating of any series of notes, our outlook or credit rating could require us to pay additional interest, which may negatively affect the value and liquidity of our debt and the market price of our common stock could decline. Factors that can affect our credit rating include changes in our operating performance, the economic environment, conditions in the semiconductor and semiconductor equipment industries, our financial position, including the incurrence of additional indebtedness, and our business strategy.

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In certain circumstances involving a change of control followed by a downgrade of the rating of a series of notes by at least two of Moody’s, S&P and Fitch Inc., unless we have exercised our right to redeem the notes of such series, we will be required to make an offer to repurchase all or, at the holder’s option, any part, of each holder’s notes of that series pursuant to the offer described below (the “Change of Control Offer”). In the Change of Control Offer, we will be required to offer payment in cash equal to 101% of the aggregate principal amount of notes repurchased plus accrued and unpaid interest, if any, on the notes repurchased, up to, but not including, the date of repurchase. We cannot make any assurance that we will have sufficient financial resources at such time or will be able to arrange financing to pay the repurchase price of that series of notes. Our ability to repurchase that series of notes in such event may be limited by law, by the indenture associated with that series of notes, or by the terms of other agreements to which we may be party at such time. If we fail to repurchase that series of notes as required by the terms of such notes, it would constitute an event of default under the indenture governing that series of notes which, in turn, may also constitute an event of default under other of our obligations.

Borrowings under our Revolving Credit Facility bear interest at a floating rate and, therefore, any increase in interest rates would require us to pay additional interest, which may have an adverse effect on the value and liquidity of our debt and the market price of our common stock could decline. The interest rate under our Revolving Credit Facility is also subject to an adjustment in conjunction with our credit rating downgrades or upgrades. Additionally, under our Revolving Credit Facility, we are required to comply with affirmative and negative covenants, which include the maintenance of certain financial ratios, the details of which can be found in Note 7, “Debt,” to our condensed consolidated financial statements. If we fail to comply with these covenants, we will be in default and our borrowings will become immediately due and payable. There can be no assurance that we will have sufficient financial resources or we will be able to arrange financing to repay our borrowings at such time. In addition, certain of our domestic subsidiaries are required to guarantee our borrowings under our Revolving Credit Facility. In the event that we default on our borrowings, these domestic subsidiaries shall be liable for our borrowings, which could disrupt our operations and result in a material adverse impact on our business, financial condition or stock price.

Our leveraged capital structure may adversely affect our financial condition, results of operations and net income per share.

Our issuance and maintenance of higher levels of indebtedness could have adverse consequences including, but not limited to:

• a negative impact on our ability to satisfy our future obligations;

• an increase in the portion of our cash flows that may have to be dedicated to increased interest and principal payments that may not be available for operations, working capital, capital expenditures, acquisitions, investments, dividends, stock repurchases, general corporate or other purposes;

• an impairment of our ability to obtain additional financing in the future; and

• obligations to comply with restrictive and financial covenants as noted in the above risk factor and Note 7, “Debt,” to our condensed consolidated financial statements.

Our ability to satisfy our future expenses as well as our new debt obligations will depend on our future performance, which will be affected by financial, business, economic, regulatory and other factors. Furthermore, our future operations may not generate sufficient cash flows to enable us to meet our future expenses and service our new debt obligations, which may impact our ability to manage our capital structure to preserve and maintain our investment grade rating. If our future operations do not generate sufficient cash flows, we may need to access the unfunded portion of our Revolving Credit Facility of $500.0 million or enter into new financing arrangements to obtain necessary funds. If we determine it is necessary to seek additional funding for any reason, we may not be able to obtain such funding or, if funding is available, we may not be able to obtain it on acceptable terms. Any additional borrowing under our revolving credit facility will place further pressure on us to comply with the financial covenants. If we fail to make a payment associated with our debt obligations, we could be in default on such debt, and such a default could cause us to be in default on our other obligations.

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There can be no assurance that we will continue to declare cash dividends at all or in any particular amounts.

Our Board of Directors first instituted a quarterly dividend during the fiscal year ended June 30, 2005. Since that time, we have announced a number of increases in the amount of our quarterly dividend level as well as payment of a special cash dividend that was declared and substantially paid in the second quarter of our fiscal year ended June 30, 2015. We intend to continue to pay quarterly dividends subject to capital availability and periodic determinations by our Board of Directors that cash dividends are in the best interest of our stockholders and are in compliance with all laws and agreements applicable to the declaration and payment of cash dividends by us. Future dividends may be affected by, among other factors: our views on potential future capital requirements for investments in acquisitions and the funding of our research and development; legal risks; stock repurchase programs; changes in federal and state income tax laws or corporate laws; changes to our business model; and our increased interest and principal payments required by our outstanding indebtedness and any additional indebtedness that we may incur in the future. Our dividend payments may change from time to time, and we cannot provide assurance that we will continue to declare dividends at all or in any particular amounts. A reduction in our dividend payments could have a negative effect on our stock price.

We are exposed to risks related to our commercial terms and conditions, including our indemnification of third parties, as well as the performance of our products.

Although our standard commercial documentation sets forth the terms and conditions that we intend to apply to commercial transactions with our business partners, counterparties to such transactions may not explicitly agree to our terms and conditions. In situations where we engage in business with a third party without an explicit master agreement regarding the applicable terms and conditions, or where the commercial documentation applicable to the transaction is subject to varying interpretations, we may have disputes with those third parties regarding the applicable terms and conditions of our business relationship with them. Such disputes could lead to a deterioration of our commercial relationship with those parties, costly and time-consuming litigation, or additional concessions or obligations being offered by us to resolve such disputes, or could impact our revenue or cost recognition. Any of these outcomes could materially and adversely affect our business, financial condition and results of operations.

In addition, in our commercial agreements, from time to time in the normal course of business we indemnify third parties with whom we enter into contractual relationships, including customers, suppliers and lessors, with respect to certain matters. We have agreed, under certain conditions, to hold these third parties harmless against specified losses, such as those arising from a breach of representations or covenants, other third party claims that our products when used for their intended purposes infringe the intellectual property rights of such other third parties, or other claims made against certain parties. We may be compelled to enter into or accrue for probable settlements of alleged indemnification obligations, or we may be subject to potential liability arising from our customers’ involvements in legal disputes. In addition, notwithstanding the provisions related to limitations on our liability that we seek to include in our business agreements, the counterparties to such agreements may dispute our interpretation or application of such provisions, and a court of law may not interpret or apply such provisions in our favor, any of which could result in an obligation for us to pay material damages to third parties and engage in costly legal proceedings. It is difficult to determine the maximum potential amount of liability under any indemnification obligations, whether or not asserted, due to our limited history of prior indemnification claims and the unique facts and circumstances that are likely to be involved in any particular claim. Our business, financial condition and results of operations in a reported fiscal period could be materially and adversely affected if we expend significant amounts in defending or settling any purported claims, regardless of their merit or outcomes.

We are also exposed to potential costs associated with unexpected product performance issues. Our products and production processes are extremely complex and thus could contain unexpected product defects, especially when products are first introduced. Unexpected product performance issues could result in significant costs being incurred by us, including increased service or warranty costs, providing product replacements for (or modifications to) defective products, litigation related to defective products, reimbursement for damages caused by our products, product recalls, or product write-offs or disposal costs. These costs could be substantial and could have an adverse impact upon our business, financial condition and operating results. In addition, our reputation with our customers could be damaged as a result of such product defects, which could reduce demand for our products and negatively impact our business.

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Furthermore, we occasionally enter into volume purchase agreements with our larger customers, and these agreements may provide for certain volume purchase incentives, such as credits toward future purchases. We believe that these arrangements are beneficial to our long-term business, as they are designed to encourage our customers to purchase higher volumes of our products. However, these arrangements could require us to recognize a reduced level of revenue for the products that are initially purchased, to account for the potential future credits or other volume purchase incentives. Our volume purchase agreements require significant estimation for the amounts to be accrued depending upon the estimate of volume of future purchases. As such, we are required to update our estimates of the accruals on a periodic basis. Until the earnings process is complete, out estimates could differ in comparison to actuals. As a result, these volume purchase arrangements, while expected to be beneficial to our business over time, could materially and adversely affect our results of operations in near-term periods, including the revenue we can recognize on product sales and therefore our gross margins.

In addition, we may in limited circumstances enter into agreements that contain customer-specific commitments on pricing, tool reliability, spare parts stocking levels, response time and other commitments. Furthermore, we may give these customers limited audit or inspection rights to enable them to confirm that we are complying with these commitments. If a customer elects to exercise its audit or inspection rights, we may be required to expend significant resources to support the audit or inspection, as well as to defend or settle any dispute with a customer that could potentially arise out of such audit or inspection. To date, we have made no significant accruals in our condensed consolidated financial statements for this contingency. While we have not in the past incurred significant expenses for resolving disputes regarding these types of commitments, we cannot make any assurance that we will not incur any such liabilities in the future. Our business, financial condition and results of operations in a reported fiscal period could be materially and adversely affected if we expend significant amounts in supporting an audit or inspection, or defending or settling any purported claims, regardless of their merit or outcomes.

There are risks associated with our receipt of government funding for research and development.

We are exposed to additional risks related to our receipt of external funding for certain strategic development programs from various governments and government agencies, both domestically and internationally. Governments and government agencies typically have the right to terminate funding programs at any time in their sole discretion, or a project may be terminated by mutual agreement if the parties determine that the project’s goals or milestones are not being achieved, so there is no assurance that these sources of external funding will continue to be available to us in the future. In addition, under the terms of these government grants, the applicable granting agency typically has the right to audit the costs that we incur, directly and indirectly, in connection with such programs. Any such audit could result in modifications to, or even termination of, the applicable government funding program. For example, if an audit were to identify any costs as being improperly allocated to the applicable program, those costs would not be reimbursed, and any such costs that had already been reimbursed would have to be refunded. We do not know the outcome of any future audits. Any adverse finding resulting from any such audit could lead to penalties (financial or otherwise), termination of funding programs, suspension of payments, fines and suspension or prohibition from receiving future government funding from the applicable government or government agency, any of which could adversely impact our operating results, financial condition and ability to operate our business.

We have recorded significant restructuring, inventory write-off and asset impairment charges in the past and may do so again in the future, which could have a material negative impact on our business.

Historically, we recorded material restructuring charges related to our prior global workforce reductions, large excess inventory write-offs, and material impairment charges related to our goodwill and purchased intangible assets.Workforce changes can also temporarily reduce workforce productivity, which could be disruptive to our business and adversely affect our results of operations. In addition, we may not achieve or sustain the expected cost savings or other benefits of our restructuring plans, or do so within the expected time frame. If we again restructure our organization and business processes, implement additional cost reduction actions or discontinue certain business operations, we may take additional, potentially material, restructuring charges related to, among other things, employee terminations or exit costs. We may also be required to write-off additional inventory if our product build plans or usage of service inventory decline. Also, as our lead times from suppliers increase (due to the increasing complexity of the parts and components they provide) and the lead times demanded by our customers decrease (due to the time pressures they face when introducing new products or technology or bringing new facilities into production), we may be compelled to increase our commitments, and therefore our risk exposure, to inventory purchases to meet our customers’ demands in a timely manner, and that inventory may need to be written-off if demand for the underlying product declines for any reason. Such additional write-offs could result in material charges.

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In the past, we recorded a material charge related to the impairment of our goodwill and purchased intangible assets. Goodwill represents the excess of costs over the net fair value of net assets acquired in a business combination. Goodwill is not amortized, but is instead tested for impairment at least annually in accordance with authoritative guidance for goodwill. Purchased intangible assets with estimable useful lives are amortized over their respective estimated useful lives based on economic benefit if known or using the straight-line method, and are reviewed for impairment in accordance with authoritative guidance for long-lived assets. The valuation of goodwill and intangible assets requires assumptions and estimates of many critical factors, including revenue and market growth, operating cash flows, market multiples, and discount rates. A substantial decline in our stock price, or any other adverse change in market conditions, particularly if such change has the effect of changing one of the critical assumptions or estimates we previously used to calculate the value of our goodwill or intangible assets (and, as applicable, the amount of any previous impairment charge), could result in a change to the estimation of fair value that could result in an additional impairment charge.

Any such additional material charges, whether related to restructuring or goodwill or purchased intangible asset impairment, may have a material negative impact on our operating results and related financial statements.

We are exposed to risks related to our financial arrangements with respect to receivables factoring and banking arrangements.

We enter into factoring arrangements with financial institutions to sell certain of our trade receivables and promissory notes from customers without recourse. In addition, we maintain bank accounts with several domestic and foreign financial institutions, any of which may prove not to be financially viable. If we were to stop entering into these factoring arrangements, our operating results, financial condition and cash flows could be adversely impacted by delays or failures in collecting trade receivables. However, by entering into these arrangements, and by engaging these financial institutions for banking services, we are exposed to additional risks. If any of these financial institutions experiences financial difficulties or is otherwise unable to honor the terms of our factoring or deposit arrangements, we may experience material financial losses due to the failure of such arrangements or a lack of access to our funds, any of which could have an adverse impact upon our operating results, financial condition and cash flows.

We are subject to the risks of additional government actions in the event we were to breach the terms of any settlement arrangement into which we have entered.

In connection with the settlement of certain government actions and other legal proceedings related to our historical stock option practices, we have explicitly agreed as a condition to such settlements that we will comply with certain laws, such as the books and records provisions of the federal securities laws. If we were to violate any such law, we might not only be subject to the significant penalties applicable to such violation, but our past settlements may also be impacted by such violation, which could give rise to additional government actions or other legal proceedings. Any such additional actions or proceedings may require us to expend significant management time and incur significant accounting, legal and other expenses, and may divert attention and resources from the operation of our business. These expenditures and diversions, as well as an adverse resolution of any such action or proceeding, could have a material adverse effect on our business, financial condition and results of operations.

General Commercial, Operational, Financial and Regulatory Risks

We are exposed to risks associated with a weakening in the condition of the financial markets and the global economy.

The markets for semiconductors, and therefore our business, are ultimately driven by the global demand for electronic devices by consumers and businesses. Economic uncertainty frequently leads to reduced consumer and business spending, which caused our customers to decrease, cancel or delay their equipment and service orders from us in the economic slowdown during fiscal year 2009. In addition, the tightening of credit markets and concerns regarding the availability of credit that accompanied that slowdown made it more difficult for our customers to raise capital, whether debt or equity, to finance their purchases of capital equipment, including the products we sell. Reduced demand, combined with delays in our customers’ ability to obtain financing (or the unavailability of such financing), has at times in the past adversely affected our product and service sales and revenues and therefore has harmed our business and operating results, and our operating results and financial condition may again be adversely impacted if economic conditions decline from their current levels.

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In addition, a decline in the condition of the global financial markets could adversely impact the market values or liquidity of our investments. Our investment portfolio includes corporate and government securities, money market funds and other types of debt and equity investments. Although we believe our portfolio continues to be comprised of sound investments due to the quality and (where applicable) credit ratings, a decline in the capital and financial markets would adversely impact the market value of our investments and their liquidity. If the market value of such investments were to decline, or if we were to have to sell some of our investments under illiquid market conditions, we may be required to recognize an impairment charge on such investments or a loss on such sales, either of which could have an adverse effect on our financial condition and operating results.

If we are unable to timely and appropriately adapt to changes resulting from difficult macroeconomic conditions, our business, financial condition or results of operations may be materially and adversely affected.

A majority of our annual revenues are derived from outside the United States, and we maintain significant operations outside the United States. We are exposed to numerous risks as a result of the international nature of our business and operations.

A majority of our annual revenues are derived from outside the United States, and we maintain significant operations outside the United States. We expect that these conditions will continue in the foreseeable future. Managing global operations and sites located throughout the world presents a number of challenges, including but not limited to:

• managing cultural diversity and organizational alignment;

• exposure to the unique characteristics of each region in the global semiconductor market, which can cause capital equipment investment patterns to vary significantly from period to period;

• periodic local or international economic downturns;

• potential adverse tax consequences, including withholding tax rules that may limit the repatriation of our earnings, and higher effective income tax rates in foreign countries where we do business;

• government controls, either by the United States or other countries, that restrict our business overseas or the import or export of semiconductor products or increase the cost of our operations;

• compliance with customs regulations in the countries in which we do business;

• tariffs or other trade barriers (including those applied to our products or to parts and supplies that we purchase);

• political instability, natural disasters, legal or regulatory changes, acts of war or terrorism in regions where we have operations or where we do business;

• fluctuations in interest and currency exchange rates may adversely impact our ability to compete on price with local providers or the value of revenues we generate from our international business. Although we attempt to manage some of our near-term currency risks through the use of hedging instruments, there can be no assurance that such efforts will be adequate;

• longer payment cycles and difficulties in collecting accounts receivable outside of the United States;

• difficulties in managing foreign distributors (including monitoring and ensuring our distributors’ compliance with applicable laws); and

• inadequate protection or enforcement of our intellectual property and other legal rights in foreign jurisdictions.

Any of the factors above could have a significant negative impact on our business and results of operations.

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We might be involved in claims or disputes related to intellectual property or other confidential information that may be costly to resolve, prevent us from selling or using the challenged technology and seriously harm our operating results and financial condition.

As is typical in the semiconductor equipment industry, from time to time we have received communications from other parties asserting the existence of patent rights, copyrights, trademark rights or other intellectual property rights which they believe cover certain of our products, processes, technologies or information. In addition, we occasionally receive notification from customers who believe that we owe them indemnification or other obligations related to intellectual property claims made against such customers by third parties. With respect to intellectual property infringement disputes, our customary practice is to evaluate such infringement assertions and to consider whether to seek licenses where appropriate. However, we cannot ensure that licenses can be obtained or, if obtained, will be on acceptable terms or that costly litigation or other administrative proceedings will not occur. The inability to obtain necessary licenses or other rights on reasonable terms could seriously harm our results of operations and financial condition. Furthermore, we may potentially be subject to claims by customers, suppliers or other business partners, or by governmental law enforcement agencies, related to our receipt, distribution and/or use of third-party intellectual property or confidential information. Legal proceedings and claims, regardless of their merit, and associated internal investigations with respect to intellectual property or confidential information disputes are often expensive to prosecute, defend or conduct; may divert management’s attention and other company resources; and/or may result in restrictions on our ability to sell our products, settlements on significantly adverse terms or adverse judgments for damages, injunctive relief, penalties and fines, any of which could have a significant negative effect on our business, results of operations and financial condition. There can be no assurance regarding the outcome of future legal proceedings, claims or investigations. The instigation of legal proceedings or claims, our inability to favorably resolve or settle such proceedings or claims, or the determination of any adverse findings against us or any of our employees in connection with such proceedings or claims could materially and adversely affect our business, financial condition and results of operations, as well as our business reputation.

We are exposed to various risks related to the legal, regulatory and tax environments in which we perform our operations and conduct our business.

We are subject to various risks related to compliance with new, existing, different, inconsistent or even conflicting laws, rules and regulations enacted by legislative bodies and/or regulatory agencies in the countries in which we operate and with which we must comply, including environmental, safety, antitrust, anti-corruption/anti-bribery, unclaimed property and export control regulations. Our failure or inability to comply with existing or future laws, rules or regulations, or changes to existing laws, rules or regulations (including changes that result in inconsistent or conflicting laws, rules or regulations), in the countries in which we operate could result in violations of contractual or regulatory obligations that may adversely affect our operating results, financial condition and ability to conduct our business. From time to time, we may receive inquiries or audit notices from governmental or regulatory bodies, or we may participate in voluntary disclosure programs, related to legal, regulatory or tax compliance matters, and these inquiries, notices or programs may result in significant financial cost (including investigation expenses, defense costs, assessments and penalties), reputational harm and other consequences that could materially and adversely affect our operating results and financial condition.

Our properties and many aspects of our business operations are subject to various domestic and international environmental laws and regulations, including those that control and restrict the use, transportation, emission, discharge, storage and disposal of certain chemicals, gases and other substances. Any failure to comply with applicable environmental laws, regulations or requirements may subject us to a range of consequences, including fines, suspension of certain of our business activities, limitations on our ability to sell our products, obligations to remediate environmental contamination, and criminal and civil liabilities or other sanctions. In addition, changes in environmental regulations (including regulations relating to climate change and greenhouse gas emissions) could require us to invest in potentially costly pollution control equipment, alter our manufacturing processes or use substitute (potentially more expensive and/or rarer) materials. Further, we use hazardous and other regulated materials that subject us to risks of strict liability for damages caused by any release, regardless of fault. We also face increasing complexity in our manufacturing, product design and procurement operations as we adjust to new and prospective requirements relating to the materials composition of our products, including restrictions on lead and other substances and requirements to track the sources of certain metals and other materials. The cost of complying, or of failing to comply, with these and other regulatory restrictions or contractual obligations could adversely affect our operating results, financial condition and ability to conduct our business.

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In addition, we may from time to time be involved in legal proceedings or claims regarding employment, immigration, contracts, product performance, product liability, antitrust, environmental regulations, securities, unfair competition and other matters (in addition to proceedings and claims related to intellectual property matters, which are separately discussed elsewhere in this Item 1A). These legal proceedings and claims, regardless of their merit, may be time-consuming and expensive to prosecute or defend, divert management’s attention and resources, and/or inhibit our ability to sell our products. There can be no assurance regarding the outcome of current or future legal proceedings or claims, which could adversely affect our operating results, financial condition and ability to operate our business.

We depend on key personnel to manage our business effectively, and if we are unable to attract, retain and motivate our key employees, our sales and product development could be harmed.

Our employees are vital to our success, and our key management, engineering and other employees are difficult to replace. We generally do not have employment contracts with our key employees. Further, we do not maintain key person life insurance on any of our employees. The expansion of high technology companies worldwide has increased demand and competition for qualified personnel. If we are unable to attract and retain key personnel, or if we are not able to attract, assimilate and retain additional highly qualified employees to meet our current and future needs, our business and operations could be harmed.

We outsource a number of services to third-party service providers, which decreases our control over the performance of these functions. Disruptions or delays at our third-party service providers could adversely impact our operations.

We outsource a number of services, including our transportation, information systems management and logistics management of spare parts and certain accounting and procurement functions, to domestic and overseas third-party service providers. While outsourcing arrangements may lower our cost of operations, they also reduce our direct control over the services rendered. It is uncertain what effect such diminished control will have on the quality or quantity of products delivered or services rendered, on our ability to quickly respond to changing market conditions, or on our ability to ensure compliance with all applicable domestic and foreign laws and regulations. In addition, many of these outsourced service providers, including certain hosted software applications that we use for confidential data storage, employ cloud computing technology for such storage. These providers’ cloud computing systems may be susceptible to “cyber incidents,” such as intentional cyber attacks aimed at theft of sensitive data or inadvertent cyber-security compromises, which are outside of our control. If we do not effectively develop and manage our outsourcing strategies, if required export and other governmental approvals are not timely obtained, if our third-party service providers do not perform as anticipated, or do not adequately protect our data from cyber-related security breaches, or if there are delays or difficulties in enhancing business processes, we may experience operational difficulties (such as limitations on our ability to ship products), increased costs, manufacturing or service interruptions or delays, loss of intellectual property rights or other sensitive data, quality and compliance issues, and challenges in managing our product inventory or recording and reporting financial and management information, any of which could materially and adversely affect our business, financial condition and results of operations.

We are exposed to risks related to cybersecurity threats and cyber incidents.

In the conduct of our business, we collect, use, transmit and store data on information systems. This data includes confidential information, transactional information and intellectual property belonging to us, our customers and our business partners, as well as personally-identifiable information of individuals. We allocate significant resources to network security, data encryption and other measures to protect our information systems and data from unauthorized access or misuse. Despite our ongoing efforts to enhance our network security measures, our information systems are susceptible to computer viruses, cyber-related security breaches and similar disruptions from unauthorized intrusions, tampering, misuse, criminal acts, including phishing, or other events or developments that we may be unable to anticipate or fail to mitigate and are subject to the inherent vulnerabilities of network security measures. We have experienced cyber-related attacks in the past, and may experience cyber-related attacks in the future. Our security measures may also be breached due to employee errors, malfeasance, or otherwise. Third parties may also attempt to influence employees, users, suppliers or customers to disclose sensitive information in order to gain access to our, our customers’ or business partners’ data. Because the techniques used to obtain unauthorized access to the information systems change frequently, and may not be recognized until launched against a target, we may be unable to anticipate these techniques or to implement adequate preventative measures.

Any of such occurrences could result in disruptions to our operations; misappropriation, corruption or theft of confidential information, including intellectual property and other critical data, of KLA-Tencor, our customers and other business partners; misappropriation of funds and company assets; reduced value of our investments in research, development and engineering; litigation with, or payment of damages to, third parties; reputational damage; costs to comply with regulatory inquiries or actions; data privacy issues; costs to rebuild our internal information systems; and increased cybersecurity protection and remediation costs.

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We carry insurance that provides some protection against the potential losses arising from a cybersecurity incident but it will not likely cover all such losses, and the losses that it does not cover may be significant.

We rely upon certain critical information systems for our daily business operations. Our inability to use or access our information systems at critical points in time could unfavorably impact our business operations.

Our global operations are dependent upon certain information systems, including telecommunications, the internet, our corporate intranet, network communications, email and various computer hardware and software applications. System failures or malfunctioning, such as difficulties with our customer relationship management (“CRM”) system, could disrupt our operations and our ability to timely and accurately process and report key components of our financial results. Our enterprise resource planning (“ERP”) system is integral to our ability to accurately and efficiently maintain our books and records, record transactions, provide critical information to our management, and prepare our financial statements. Any disruptions or difficulties that may occur in connection with our ERP system or other systems (whether in connection with the regular operation, periodic enhancements, modifications or upgrades of such systems or the integration of our acquired businesses into such systems) could adversely affect our ability to complete important business processes, such as the evaluation of our internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act of 2002. Any of these events could have an adverse effect on our business, operating results and financial condition.

Acquisitions are an important element of our strategy but, because of the uncertainties involved, we may not find suitable acquisition candidates and we may not be able to successfully integrate and manage acquired businesses. We are also exposed to risks in connection with strategic alliances into which we may enter.

In addition to our efforts to develop new technologies from internal sources, part of our growth strategy is to pursue acquisitions and acquire new technologies from external sources. As part of this effort, we may make acquisitions of, or significant investments in, businesses with complementary products, services and/or technologies. There can be no assurance that we will find suitable acquisition candidates or that acquisitions we complete will be successful. In addition, we may use equity to finance future acquisitions, which would increase our number of shares outstanding and be dilutive to current stockholders.

If we are unable to successfully integrate and manage acquired businesses or if acquired businesses perform poorly, then our business and financial results may suffer. It is possible that the businesses we have acquired, as well as businesses that we may acquire in the future, may perform worse than expected or prove to be more difficult to integrate and manage than anticipated. In addition, we may lose key employees of the acquired companies. As a result, risks associated with acquisition transactions may give rise to a material adverse effect on our business and financial results for a number of reasons, including:

• we may have to devote unanticipated financial and management resources to acquired businesses;

• the combination of businesses may cause the loss of key personnel or an interruption of, or loss of momentum in, the activities of our company and/or the acquired business;

• we may not be able to realize expected operating efficiencies or product integration benefits from our acquisitions;

• we may experience challenges in entering into new market segments for which we have not previously manufactured and sold products;

• we may face difficulties in coordinating geographically separated organizations, systems and facilities;

• the customers, distributors, suppliers, employees and others with whom the companies we acquire have business dealings may have a potentially adverse reaction to the acquisition;

• we may have to write-off goodwill or other intangible assets; and

• we may incur unforeseen obligations or liabilities in connection with acquisitions.

At times, we may also enter into strategic alliances with customers, suppliers or other business partners with respect to development of technology and intellectual property. These alliances typically require significant investments of capital and exchange of proprietary, highly sensitive information. The success of these alliances depends on various factors over which we may have limited or no control and requires ongoing and effective cooperation with our strategic partners. Mergers and acquisitions and strategic alliances are inherently subject to significant risks, and the inability to effectively manage these risks could materially and adversely affect our business, financial condition and operating results.

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Disruption of our manufacturing facilities or other operations, or in the operations of our customers, due to earthquake, flood, other natural catastrophic events, health epidemics or terrorism could result in cancellation of orders, delays in deliveries or other business activities, or loss of customers and could seriously harm our business.

We have significant manufacturing operations in the United States, Singapore, Israel, Germany and China. In addition, our business is international in nature, with our sales, service and administrative personnel and our customers located in numerous countries throughout the world. Operations at our manufacturing facilities and our assembly subcontractors, as well as our other operations and those of our customers, are subject to disruption for a variety of reasons, including work stoppages, acts of war, terrorism, health epidemics, fire, earthquake, volcanic eruptions, energy shortages, flooding or other natural disasters. Such disruption could cause delays in, among other things, shipments of products to our customers, our ability to perform services requested by our customers, or the installation and acceptance of our products at customer sites. We cannot ensure that alternate means of conducting our operations (whether through alternate production capacity or service providers or otherwise) would be available if a major disruption were to occur or that, if such alternate means were available, they could be obtained on favorable terms.

In addition, as part of our cost-cutting actions, we have consolidated several operating facilities. Our California operations are now primarily centralized in our Milpitas facility. The consolidation of our California operations into a single campus could further concentrate the risks related to any of the disruptive events described above, such as acts of war or terrorism, earthquakes, fires or other natural disasters, if any such event were to impact our Milpitas facility.

We are predominantly uninsured for losses and interruptions caused by terrorist acts and acts of war. If international political instability continues or increases, our business and results of operations could be harmed.

The threat of terrorism targeted at, or acts of war in, the regions of the world in which we do business increases the uncertainty in our markets. Any act of terrorism or war that affects the economy or the semiconductor industry could adversely affect our business. Increased international political instability in various parts of the world, disruption in air transportation and further enhanced security measures as a result of terrorist attacks may hinder our ability to do business and may increase our costs of operations. We maintain significant manufacturing and research and development operations in Israel, an area that has historically experienced a high degree of political instability, and we are therefore exposed to risks associated with future instability in that region. Such instability could directly impact our ability to operate our business (or our customers’ ability to operate their businesses) in the affected region, cause us to incur increased costs in transportation, make such transportation unreliable, increase our insurance costs, and cause international currency markets to fluctuate. Such instability could also have the same effects on our suppliers and their ability to timely deliver their products. If international political instability continues or increases in any region in which we do business, our business and results of operations could be harmed. We are predominantly uninsured for losses and interruptions caused by terrorist acts and acts of war.

We self-insure certain risks including earthquake risk. If one or more of the uninsured events occurs, we could suffer major financial loss.

We purchase insurance to help mitigate the economic impact of certain insurable risks; however, certain risks are uninsurable, are insurable only at significant cost or cannot be mitigated with insurance. Accordingly, we may experience a loss that is not covered by insurance, either because we do not carry applicable insurance or because the loss exceeds the applicable policy amount or is less than the deductible amount of the applicable policy. For example, we do not currently hold earthquake insurance. An earthquake could significantly disrupt our manufacturing operations, a significant portion of which are conducted in California, an area highly susceptible to earthquakes. It could also significantly delay our research and engineering efforts on new products, much of which is also conducted in California. We take steps to minimize the damage that would be caused by an earthquake, but there is no certainty that our efforts will prove successful in the event of an earthquake. We self-insure earthquake risks because we believe this is a prudent financial decision based on our cash reserves and the high cost and limited coverage available in the earthquake insurance market. Certain other risks are also self-insured either based on a similar cost-benefit analysis, or based on the unavailability of insurance. If one or more of the uninsured events occurs, we could suffer major financial loss.

70

We are exposed to foreign currency exchange rate fluctuations. Although we hedge certain currency risks, we may still be adversely affected by changes in foreign currency exchange rates or declining economic conditions in these countries.

We have some exposure to fluctuations in foreign currency exchange rates, primarily the Japanese Yen and the euro. We have international subsidiaries that operate and sell our products globally. In addition, an increasing proportion of our manufacturing activities are conducted outside of the United States, and many of the costs associated with such activities are denominated in foreign currencies. We routinely hedge our exposures to certain foreign currencies with certain financial institutions in an effort to minimize the impact of certain currency exchange rate fluctuations, but these hedges may be inadequate to protect us from currency exchange rate fluctuations. To the extent that these hedges are inadequate, or if there are significant currency exchange rate fluctuations in currencies for which we do not have hedges in place, our reported financial results or the way we conduct our business could be adversely affected. Furthermore, if a financial counterparty to our hedges experiences financial difficulties or is otherwise unable to honor the terms of the foreign currency hedge, we may experience material financial losses.

We are exposed to fluctuations in interest rates and the market values of our portfolio investments; impairment of our investments could harm our earnings. In addition, we and our stockholders are exposed to risks related to the volatility of the market for our common stock.

Our investment portfolio primarily consists of both corporate and government debt securities that are susceptible to changes in market interest rates and bond yields. As market interest rates and bond yields increase, those securities with a lower yield-at-cost show a mark-to-market unrealized loss. We believe we have the ability to realize the full value of all these investments upon maturity. However, an impairment of the fair market value of our investments, even if unrealized, must be reflected in our financial statements for the applicable period and may therefore have a material adverse effect on our results of operations for that period.

In addition, the market price for our common stock is volatile and has fluctuated significantly during recent years. The trading price of our common stock could continue to be highly volatile and fluctuate widely in response to various factors, including without limitation conditions in the semiconductor industry and other industries in which we operate, fluctuations in the global economy or capital markets, our operating results or other performance metrics, or adverse consequences experienced by us as a result of any of the risks described elsewhere in this Item 1A. Volatility in the market price of our common stock could cause an investor in our common stock to experience a loss on the value of their investment in us and could also adversely impact our ability to raise capital through the sale of our common stock or to use our common stock as consideration to acquire other companies.

We are exposed to risks in connection with tax and regulatory compliance audits in various jurisdictions.

We are subject to tax and regulatory compliance audits (such as related to customs or product safety requirements) in various jurisdictions, and such jurisdictions may assess additional income or other taxes, penalties, fines or other prohibitions against us. Although we believe our tax estimates are reasonable and that our products and practices comply with applicable regulations, the final determination of any such audit and any related litigation could be materially different from our historical income tax provisions and accruals related to income taxes and other contingencies. The results of an audit or litigation could have a material adverse effect on our operating results or cash flows in the period or periods for which that determination is made.

A change in our effective tax rate can have a significant adverse impact on our business.

We earn profits in, and are therefore potentially subject to taxes in, the U.S. and numerous foreign jurisdictions, including Singapore, Israel and the Cayman Islands, the countries in which we earn the majority of our non-U.S. profits. Due to economic, political or other conditions, tax rates in those jurisdictions may be subject to significant change. A number of factors may adversely impact our future effective tax rates, such as the jurisdictions in which our profits are determined to be earned and taxed; changes in the tax rates imposed by those jurisdictions; expiration of tax holidays in certain jurisdictions that are not renewed; the resolution of issues arising from tax audits with various tax authorities; changes in the valuation of our deferred tax assets and liabilities; adjustments to estimated taxes upon finalization of various tax returns; increases in expenses not deductible for tax purposes, including write-offs of acquired in-process research and development and impairment of goodwill in connection with acquisitions; changes in available tax credits; changes in stock-based compensation expense; changes in tax laws or the interpretation of such tax laws; changes in generally accepted accounting principles; and the repatriation of earnings from outside the United States for which we have not previously provided for United States taxes. A change in our effective tax rate can materially and adversely impact our results from operations. For example, as a consequence of the newly enacted Tax Cuts and Jobs Act (“the Act”), foreign earnings are now deemed to be repatriated resulting in a higher effective tax rate for the Company’s fiscal year ending June 30, 2018. In addition, recent changes to U.S. tax laws will significantly impact how U.S. multinational corporations are taxed on foreign earnings. Numerous countries are evaluating

71

their existing tax laws due in part, to recommendations made by the Organization for Economic Co-operation and Development’s (“OECD’s”) Base Erosion and Profit Shifting (“BEPS”) project. To address the impact of the recent U.S. tax law changes, we recorded a provisional tax amount of $340.9 million for the transitional tax liability and recorded a provisional tax amount of $101.1 million to re-measure certain deferred tax assets and liabilities as a result of the enactment of the Act. These provisional tax amounts recorded are based on our reasonable estimate until we fully complete our assessment and we may need additional information to complete our assessment. We are still evaluating the tax provisions related to Global Intangible Low-Taxed Income (“GILTI”) and we have not made a policy election on how to account for the GILTI provisions of the Act as allowed by the U.S. generally accepted accounting standards. Our selection of an accounting policy with respect to the new GILTI tax rules will depend, in part, on analyzing our global income to determine whether we expect to have future U.S. inclusions in taxable income related to GILTI and, if so, what the impact is expected to be.

In addition, the recent U.S. tax law changes are subject to further interpretations from the U.S. federal and state governments and regulatory organizations, such as Treasury Department and/or IRS and this could change the provisional tax liability or the accounting treatment of the provisional tax liability based on updated guidance and interpretations. A significant portion of the additional provisions for income taxes we have made due to the enactment of the Act is payable by us over a period of up to eight years. As result, our cash flows from operating activities will be adversely impacted until the additional tax provisions are paid in full.

Compliance with federal securities laws, rules and regulations, as well as NASDAQ requirements, has become increasingly complex, and the significant attention and expense we must devote to those areas may have an adverse impact on our business.

Federal securities laws, rules and regulations, as well as NASDAQ rules and regulations, require companies to maintain extensive corporate governance measures, impose comprehensive reporting and disclosure requirements, set strict independence and financial expertise standards for audit and other committee members and impose civil and criminal penalties for companies and their chief executive officers, chief financial officers and directors for securities law violations. These laws, rules and regulations have increased, and in the future are expected to continue to increase, the scope, complexity and cost of our corporate governance, reporting and disclosure practices, which could harm our results of operations and divert management’s attention from business operations.

A change in accounting standards or practices or a change in existing taxation rules or practices (or changes in interpretations of such standards, practices or rules) can have a significant effect on our reported results and may even affect reporting of transactions completed before the change is effective.

New accounting standards and taxation rules and varying interpretations of accounting pronouncements and taxation rules have occurred and will continue to occur in the future. Changes to (or revised interpretations or applications of) existing accounting standards or tax rules or the questioning of current or past practices may adversely affect our reported financial results or the way we conduct our business. For example, in May 2014, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update regarding revenue from contracts with customers, and in February 2016, the FASB issued an accounting standard update which amends the existing accounting standards for leases. Adoption of new standards may require changes to our processes, accounting systems, and internal controls. Difficulties encountered during adoption could result in internal control deficiencies or delay the reporting of our financial results. In addition, the passing of the Act in December 2017 caused us to significantly increase our provision for income taxes, which had a material adverse effect on our net income for the threeandsixmonths endedDecember 31, 2017.Further interpretations of the Act from the government and regulatory organizations may change our tax expense provided for our transitional tax liability and deferred tax adjustments as well as our provision liability or accounting treatment of the provisional liability which may potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts.

72

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Equity Repurchase Plans

The following is a summary of stock repurchases for the three months ended December 31, 2017⁽¹⁾:

Period	Total Number of Shares Purchased (2)	Average Price Paid per Share		Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs (3)
October 1, 2017 to October 31, 2017	91,279	$	105.94	5,148,361
November 1, 2017 to November 30, 2017	154,601	$	104.19	4,993,760
December 1, 2017 to December 31, 2017	142,464	$	105.92	4,851,296
Total	388,344	$	105.24

__________________ 

(1) Our Board of Directors has authorized a program for us to repurchase shares of our common stock. The total number and dollar amount of shares repurchased for the three months ended December 31, 2017 and fiscal years ended June 30, 2017, 2016 and 2015 were 0.4 million shares ($40.9 million), 0.2 million shares ($25.0 million), 3.4 million shares ($175.7 million) and 9.3 million shares ($608.9 million), respectively.

(2) All shares were purchased pursuant to the publicly announced repurchase program described in footnote 1 above. Shares are reported based on the trade date of the applicable repurchase.

(3) The stock repurchase program has no expiration date. Future repurchases of our common stock under our repurchase program may be effected through various different repurchase transaction structures, including isolated open market transactions or systematic repurchase plans.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5.    OTHER INFORMATION

None.

73

ITEM 6. EXHIBITS

		Incorporated by Reference
Exhibit Number	Exhibit Description	Form	File Number	Exhibit Number	Filing Date
10.1	Credit Agreement, dated as of November 30, 2017 by and among KLA-Tencor Corporation, the lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as administrative agent	8-K	000-09992	10.1	11/30/2017
31.1	Certification of Chief Executive Officer under Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934
31.2	Certification of Chief Financial Officer under Rule 13a-14(a) /15d-14(a) of the Securities Exchange Act of 1934
32	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

74

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	KLA-Tencor Corporation
	(Registrant)
January 25, 2018	/s/ RICHARD P. WALLACE
(Date)	Richard P. Wallace
	President and Chief Executive Officer (Principal Executive Officer)
January 25, 2018	/s/ BREN D. HIGGINS
(Date)	Bren D. Higgins
	Executive Vice President and Chief Financial Officer (Principal Financial Officer)
January 25, 2018	/s/ VIRENDRA A. KIRLOSKAR
(Date)	Virendra A. Kirloskar
	Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)

75

KLA-TENCOR CORPORATION

EXHIBIT INDEX

		Incorporated by Reference
Exhibit Number	Exhibit Description	Form	File Number	Exhibit Number	Filing Date
10.1	Credit Agreement, dated as of November 30, 2017 by and among KLA-Tencor Corporation, the lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as administrative agent	8-K	000-09992	10.1	11/30/2017
31.1	Certification of Chief Executive Officer under Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934
31.2	Certification of Chief Financial Officer under Rule 13a-14(a) /15d-14(a) of the Securities Exchange Act of 1934
32	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

76

EX-31.1

Exhibit 31.1

Certification of Chief Executive Officer

Pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) As Adopted

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Richard P. Wallace, certify that:

1 I have reviewed this Quarterly Report on Form 10-Q of KLA-Tencor Corporation;

2 Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3 Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4 The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5 The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

January 25, 2018	/s/ RICHARD P. WALLACE
(Date)	Richard P. Wallace
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Certification of Chief Financial Officer

Pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) As Adopted

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Bren D. Higgins, certify that:

1 I have reviewed this Quarterly Report on Form 10-Q of KLA-Tencor Corporation;

2 Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3 Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4 The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5 The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

January 25, 2018	/s/ BREN D. HIGGINS
(Date)	Bren D. Higgins
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)

EX-32

Exhibit 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Richard P. Wallace, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of KLA-Tencor Corporation on Form 10-Q for the fiscal quarter ended December 31, 2017 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of KLA-Tencor Corporation.

January 25, 2018	By:	/s/ RICHARD P. WALLACE
(Date)	Name:	Richard P. Wallace
	Title:	President and Chief Executive Officer

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Bren D. Higgins, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of KLA-Tencor Corporation on Form 10-Q for the fiscal quarter ended December 31, 2017 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of KLA-Tencor Corporation.

January 25, 2018	By:	/s/ BREN D. HIGGINS
(Date)	Name:	Bren D. Higgins
	Title:	Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - shares	6 Months Ended
	Dec. 31, 2017	Jan. 12, 2018
DEI [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Entity Registrant Name	KLA TENCOR CORP
Entity Central Index Key	0000319201
Entity Filer Category	Large Accelerated Filer
Current Fiscal Year End Date	--06-30
Trading Symbol	klac
Entity Common Stock, Shares Outstanding		156,620,125

XML

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Current assets:
Cash and cash equivalents	$ 1,073,394	$ 1,153,051
Marketable securities	1,684,796	1,863,689
Accounts receivable, net	740,903	571,117
Inventories	787,971	732,988
Other current assets	66,929	71,221
Total current assets	4,353,993	4,392,066
Land, property and equipment, net	281,634	283,975
Goodwill	350,023	349,526
Deferred income taxes	193,740	291,967
Purchased intangibles, net	16,563	18,963
Other non-current assets	211,315	195,676
Total assets	5,407,268	5,532,173
Current liabilities:
Accounts payable	149,844	147,380
Deferred system profit	248,829	180,861
Unearned revenue	64,256	65,507
Current portion of long-term debt	0	249,983
Other current liabilities	703,619	649,431
Total current liabilities	1,166,548	1,293,162
Non-current liabilities:
Long-term debt	2,486,426	2,680,474
Unearned revenue	67,927	59,713
Other non-current liabilities	460,742	172,407
Total liabilities	4,181,643	4,205,756
Commitments and contingencies (Note 12 and Note 13)
Stockholders’ equity:
Common stock and capital in excess of par value	548,691	529,283
Retained earnings	729,456	848,457
Accumulated other comprehensive income (loss)	(52,522)	(51,323)
Total stockholders’ equity	1,225,625	1,326,417
Total liabilities and stockholders’ equity	$ 5,407,268	$ 5,532,173

XML

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Product	$ 761,587	$ 683,733	$ 1,522,374	$ 1,245,486
Service	214,235	193,152	423,029	382,072
Total revenues	975,822	876,885	1,945,403	1,627,558
Costs and expenses:
Costs of revenues	347,334	318,507	700,783	596,343
Research and development	156,745	130,912	303,477	260,145
Selling, general and administrative	105,546	93,532	213,259	187,920
Interest expense	27,372	30,624	57,948	61,356
Other expense (income), net	(8,482)	(3,535)	(13,523)	(7,271)
Income before income taxes	347,307	306,845	683,459	529,065
Provision for income taxes	481,626	68,594	536,842	112,713
Net income (loss)	$ (134,319)	$ 238,251	$ 146,617	$ 416,352
Net income (loss) per share:
Basic (in dollars per share)	$ (0.86)	$ 1.52	$ 0.94	$ 2.66
Diluted (in dollars per share)	(0.86)	1.52	0.93	2.65
Cash dividends declared per share (in dollars per share)	$ 0.59	$ 0.54	$ 1.18	$ 1.06
Weighted-average number of shares:
Basic (in shares)	156,587	156,335	156,707	156,232
Diluted (in shares)	156,587	157,123	157,688	157,071

XML

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (134,319)	$ 238,251	$ 146,617	$ 416,352
Currency translation adjustments:
Change in currency translation adjustments	4,821	(11,305)	6,379	(7,381)
Change in income tax benefit or expense	(1,836)	1,086	(2,339)	1,868
Net change related to currency translation adjustments	2,985	(10,219)	4,040	(5,513)
Cash flow hedges:
Change in net unrealized gains or losses	697	13,969	1,141	12,131
Reclassification adjustments for net gains or losses included in net income (loss)	(963)	1,305	(3,081)	2,684
Change in income tax benefit or expense	78	(5,494)	676	(5,329)
Net change related to cash flow hedges	(188)	9,780	(1,264)	9,486
Net change related to unrecognized losses and transition obligations in connection with defined benefit plans	(59)	819	(93)	1,064
Available-for-sale securities:
Change in net unrealized gains or losses	(5,863)	(7,037)	(5,196)	(9,914)
Reclassification adjustments for net gains or losses included in net income (loss)	69	(30)	63	(234)
Change in income tax benefit or expense	1,315	1,164	1,251	1,640
Net change related to available-for-sale securities	(4,479)	(5,903)	(3,882)	(8,508)
Other comprehensive income (loss)	(1,741)	(5,523)	(1,199)	(3,471)
Total comprehensive income (loss)	$ (136,060)	$ 232,728	$ 145,418	$ 412,881

XML

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 146,617	$ 416,352
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	31,412	29,314
Asset impairment charges	1,000	358
Non-cash stock-based compensation expense	27,770	23,922
Net (gain) loss on sales of marketable securities and other investments	49	(885)
Changes in assets and liabilities, net of business acquisition:
Accounts receivable, net	(169,498)	(62,627)
Inventories	(44,434)	14,319
Other assets	82,267	(8,838)
Accounts payable	2,192	10,239
Deferred system profit	67,968	19,391
Other liabilities	357,657	(49,355)
Net cash provided by operating activities	503,000	392,190
Cash flows from investing activities:
Acquisition of non-marketable securities	(3,377)	(2,370)
Business acquisition	(5,490)	0
Capital expenditures, net	(29,125)	(18,512)
Proceeds from sale of assets	0	2,582
Purchases of available-for-sale securities	(326,012)	(830,462)
Proceeds from sale of available-for-sale securities	106,601	189,242
Proceeds from maturity of available-for-sale securities	391,760	356,177
Purchases of trading securities	(30,790)	(73,278)
Proceeds from sale of trading securities	35,382	68,465
Net cash provided by (used in) investing activities	138,949	(308,156)
Cash flows from financing activities:
Proceeds from revolving credit facility, net of debt issuance costs	248,693	0
Repayment of debt	(696,250)	(80,000)
Issuance of common stock	20,579	23,694
Tax withholding payments related to vested and released restricted stock units	(26,195)	(17,455)
Common stock repurchases	(80,354)	0
Payment of dividends to stockholders	(192,902)	(173,842)
Net cash used in financing activities	(726,429)	(247,603)
Effect of exchange rate changes on cash and cash equivalents	4,823	(7,886)
Net decrease in cash and cash equivalents	(79,657)	(171,455)
Cash and cash equivalents at beginning of period	1,153,051	1,108,488
Cash and cash equivalents at end of period	1,073,394	937,033
Supplemental cash flow disclosures:
Income taxes paid, net	147,483	110,575
Interest paid	58,698	60,016
Non-cash activities:
Purchase of land, property and equipment, net - investing activities	5,548	1,985
Unsettled common stock repurchase - financing activities	1,289	0
Dividends payable - financing activities	$ 7,590	$ 12,763

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Basis of Presentation

6 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

NOTE 1 – BASIS OF PRESENTATION

Basis of Presentation. The condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the unaudited interim financial statements reflect all adjustments (consisting only of normal, recurring adjustments) necessary for a fair statement of the financial position, results of operations, comprehensive income (loss), and cash flows for the periods indicated. These financial statements and notes, however, should be read in conjunction with Item 8, “Financial Statements and Supplementary Data” included in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2017, filed with the SEC on August 4, 2017.

The condensed consolidated financial statements include the accounts of KLA-Tencor and its majority-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.

The results of operations for the three and six months ended December 31, 2017 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year ending June 30, 2018.

Certain reclassifications have been made to the prior year’s Condensed Consolidated Balance Sheet and notes to conform to the current year presentation. The reclassifications had no effect on the prior year’s Condensed Consolidated Statements of Operations, Comprehensive Income (Loss) and Cash Flows.

Management Estimates. The preparation of the condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions in applying the Company’s accounting policies that affect the reported amounts of assets and liabilities (and related disclosure of contingent assets and liabilities) at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

Revenue Recognition. The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectibility is reasonably assured. The Company derives revenue from three sources—sales of systems, spare parts and services. In general, the Company recognizes revenue for systems when the system has been installed, is operating according to predetermined specifications and is accepted by the customer. When the Company has demonstrated a history of successful installation and acceptance, the Company recognizes revenue upon delivery and customer acceptance. Under certain circumstances, however, the Company recognizes revenue prior to acceptance from the customer, as follows:

• When the customer fab has previously accepted the same tool, with the same specifications, and when the Company can objectively demonstrate that the tool meets all of the required acceptance criteria.

• When system sales to independent distributors have no installation requirement, contain no acceptance agreement, and 100% of the payment is due based upon shipment.

• When the installation of the system is deemed perfunctory.

• When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as intended and meets predetermined specifications.

In circumstances in which the Company recognizes revenue prior to installation, the portion of revenue associated with installation is deferred based on estimated fair value, and that revenue is recognized upon completion of the installation.

In many instances, products are sold in stand-alone arrangements. Services are sold separately through renewals of annual maintenance contracts. The Company has multiple element revenue arrangements in cases where certain elements of a sales arrangement are not delivered and accepted in one reporting period. To determine the relative fair value of each element in a revenue arrangement, the Company allocates arrangement consideration based on the selling price hierarchy. For substantially all of the arrangements with multiple deliverables pertaining to products and services, the Company uses vendor-specific objective evidence (“VSOE”) or third-party evidence (“TPE”) to allocate the selling price to each deliverable. The Company determines TPE based on historical prices charged for products and services when sold on a stand-alone basis. When the Company is unable to establish relative selling price using VSOE or TPE, the Company uses estimated selling price (“ESP”) in its allocation of arrangement consideration. The objective of ESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. ESP could potentially be used for new or customized products. The Company regularly reviews relative selling prices and maintains internal controls over the establishment and updates of these estimates.

In a multiple element revenue arrangement, the Company defers revenue recognition associated with the relative fair value of each undelivered element until that element is delivered to the customer. To be considered a separate element, the product or service in question must represent a separate unit of accounting, which means that such product or service must fulfill the following criteria: (a) the delivered item(s) has value to the customer on a stand-alone basis; and (b) if the arrangement includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in the control of the Company. If the arrangement does not meet all the above criteria, the entire amount of the sales contract is deferred until all elements are accepted by the customer.

Trade-in rights are occasionally granted to customers to trade in tools in connection with subsequent purchases. The Company estimates the value of the trade-in right and reduces the revenue recognized on the initial sale. This amount is recognized at the earlier of the exercise of the trade-in right or the expiration of the trade-in right.

The Company enters into volume purchase agreements with some of its customers. The Company accrues the estimated credits earned by its customers for such incentives, and in situations when the credit levels vary depending upon sales volume, the Company updates its accrual based on the amount that the Company estimates will be purchased pursuant to the volume purchase agreements. Accruals for customer credits are recorded as an offset to revenue or deferred revenue.

 Spare parts revenue is recognized when the parts have been shipped, risk of loss has passed to the customer and collection of the resulting receivable is reasonably assured.

Service and maintenance contract revenue is recognized ratably over the term of the maintenance contract. Revenue from services performed in the absence of a maintenance contract, including consulting and training revenue, is recognized when the related services are performed and collectibility is reasonably assured.

The Company sells stand-alone software that is subject to software revenue recognition guidance. The Company periodically reviews selling prices to determine whether VSOE exists, and in situations where the Company is unable to establish VSOE for undelivered elements such as post-contract service, revenue is recognized ratably over the term of the service contract.

The Company also defers the fair value of non-standard warranty bundled with equipment sales as unearned revenue. Non-standard warranty includes services incremental to the standard 40-hour per week coverage for 12 months. Non-standard warranty is recognized ratably as revenue when the applicable warranty term period commences.

The deferred system profit balance equals the value of products that have been shipped and billed to customers which have not met the Company’s revenue recognition criteria, less applicable product and warranty costs. Deferred system profit does not include the profit associated with product shipments to certain customers in Japan, to whom title does not transfer until customer acceptance. Shipments to such customers in Japan are classified as inventory at cost until the time of acceptance.

Recent Accounting Pronouncements.

Recently Adopted

In July 2015, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update for the subsequent measurement of inventory. The amended guidance requires entities to measure inventory at the lower of cost or net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The requirement would replace the current lower of cost or market evaluation and the accounting guidance is unchanged for inventory measured using last-in, first-out (“LIFO”) or the retail inventory method. The Company adopted this update beginning in the first quarter of its fiscal year ending June 30, 2018 on a prospective basis and there was no impact of adoption on its condensed consolidated financial statements.

Updates Not Yet Effective

In May 2014, the FASB issued an accounting standard update regarding revenue from customer contracts to transfer goods and services or non-financial assets unless the contracts are covered by other standards (for example, insurance or lease contracts). Under the new guidance, an entity should recognize revenue in connection with the transfer of promised goods or services to customers in an amount that reflects the consideration that the entity expects to be entitled to receive in exchange for those goods or services. In addition, the new standard requires that reporting companies disclose the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The new standard may be applied retrospectively to each prior period presented (“full retrospective transition method”) or retrospectively with the cumulative effect recognized as of the date of adoption (“modified retrospective transition method”). The FASB has also issued several amendments to the standard since its initial issuance. The Company intends to adopt the new standard in the first quarter of its fiscal year ending June 30, 2019 and elected a modified retrospective transition method to be applied to completed and incomplete contracts as of the adoption date.

To address the significant implementation requirements of the accounting standard update, the Company has established a revenue project steering committee and cross-functional implementation team for the implementation of the standard, including a review of all significant revenue arrangements to identify any differences in the timing, measurement, presentation of revenue recognition including new disclosure requirements.

The Company has completed its preliminary assessment of the potential impact that the implementation of this new standard will have on its consolidated financial statements and believes the most significant impact may include the following:

• The Company will account for the standard 12-month warranty for a majority of its products that is not separately paid for by the customers as a performance obligation since the Company provides for necessary repairs as well as preventive maintenance services for such products. The estimated fair value of the service will be deferred and recognized ratably as revenue over the warranty period.

• The Company will generally recognize revenue for its products at a point of time based on judgment of whether or not the Company has satisfied its performance obligation by transferring control of the product to the customer. In evaluating whether or not control has been transferred to the customer, the Company will consider whether or not certain indicators have been met. Not all of the indicators need to be met for the Company to conclude that control has transferred to the customer. The Company will be required to use significant judgment to evaluate whether or not the factors indicate that the customer has obtained control of the product and the following factors will be considered in evaluating whether or not control has transferred to the customer: the Company has a present right to payment; the customer has legal title; the customer has physical possession; the customer has significant risk and rewards of ownership; and the customer has accepted the product, or whether customer acceptance is considered a formality based on history of acceptance of similar products.

• The Company will recognize revenue for software licenses at the time of delivery since the VSOE requirement for undelivered element such as post-contract support is eliminated and companies are allowed to use established or best estimate selling price for the undelivered element to allocate and defer the revenue. As a result, the Company will recognize as revenue a portion of the sales price upon delivery of the software, compared to the current practice of recognizing the entire sales price ratably over the term of the service contract due to the lack of VSOE.

The Company will continue to assess the impact of the new standard, including potential changes to the accounting policies, business processes, systems and internal controls over financial reporting and its preliminary assessment of the impact is subject to change.

In January 2016, the FASB issued an accounting standard update that changes the accounting for financial instruments primarily related to equity investments (other than those accounted for under the equity method of accounting or those that result in consolidation of the investee), financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The accounting standard update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In February 2016, the FASB issued an accounting standard update which amends the existing accounting standards for leases. Consistent with current guidance, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification. Under the new guidance, a lessee will be required to recognize assets and liabilities for all leases with lease terms of more than 12 months. The update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2020 using a modified retrospective transition method. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In June 2016, the FASB issued an accounting standard update that changes the accounting for recognizing impairments of financial assets. Under the update, credit losses for certain types of financial instruments will be estimated based on expected losses. The update also modifies the impairment models for available-for-sale debt securities and for purchased financial assets with credit deterioration since their origination. The update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2021, with early adoption permitted starting in the first quarter of fiscal year ending June 30, 2020. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In October 2016, the FASB issued an accounting standard update to recognize the income tax consequences of intra-entity transfers of assets other than inventory when they occur. This eliminates the exception to postpone recognition until the asset has been sold to an outside party. This standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019, and early adoption is permitted. It is required to be applied on a modified retrospective basis through a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In January 2017, the FASB issued an accounting standard update to simplify the subsequent measurement of goodwill by removing the second step of the two-step impairment test, which requires an entity to determine the fair value of assets and liabilities similar to what is required in a purchase price allocation. Under the update, goodwill impairment will be calculated as the amount by which a reporting unit’s carrying value exceeds its fair value. This standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2021 and requires a prospective approach to adoption. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In January 2017, the FASB issued an accounting standard on clarifying the definition of a business, with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The standard is effective for the Company for its fiscal year ending June 30, 2019.  The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. 

In March 2017, the FASB issued an accounting standard update that changes the statements of operation classification of net periodic benefit cost related to defined benefit pension and/or other postretirement benefit plans. Under the update, employers will present the service cost component of net periodic benefit cost in the same statements of operations line item(s) as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit costs separately from the line item(s) that includes the service cost and outside of any subtotal of operating income, if one is presented. The standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019 and early adoption is permitted. It is required to be applied retrospectively, except for the provision regarding capitalization in assets which is required to be applied prospectively. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In May 2017, the FASB issued an accounting standard update regarding stock compensation that provides guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in order to reduce diversity in practice and reduce complexity.   The update is effective for the Company beginning in the first quarter of the Company’s fiscal year ending June 30, 2019 and should be applied prospectively with early adoption permitted as of the beginning of an interim or annual reporting period. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements.

In August 2017, the FASB issued an accounting standard update to hedge accounting to better align the Company’s risk management activities by refining financial and non-financial hedging strategy eligibilities. This update also amends the presentation and disclosure requirements to increase transparency to better understand an entity’s risk exposures and how hedging strategies are used to manage those exposures. This standard update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2020, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

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Fair Value Measurements

6 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

NOTE 2 – FAIR VALUE MEASUREMENTS

The Company’s financial assets and liabilities are measured and recorded at fair value, except for its debt and certain equity investments in privately-held companies. These equity investments are generally accounted for under the cost method of accounting and are periodically assessed for other-than-temporary impairment when an event or circumstance indicates that an other-than-temporary decline in value may have occurred. The Company’s non-financial assets, such as goodwill, intangible assets, and land, property and equipment, are recorded at cost and are assessed for impairment when an event or circumstance indicates that an other-than-temporary decline in value may have occurred.

Fair Value of Financial Instruments. KLA-Tencor has evaluated the estimated fair value of financial instruments using available market information and valuations as provided by third-party sources. The use of different market assumptions and/or estimation methodologies could have a significant effect on the estimated fair value amounts. The fair value of the Company’s cash equivalents, accounts receivable, accounts payable and other current assets and liabilities approximate their carrying amounts due to the relatively short maturity of these items.

Fair Value Hierarchy. The authoritative guidance for fair value measurements establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:

Level 1	Valuations based on quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.
Level 2	Valuations based on 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 data for substantially the full term of the assets or liabilities.
Level 3	Valuations based on inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The Company’s financial instruments were classified within Level 1 or Level 2 of the fair value hierarchy as of December 31, 2017, because they were valued using quoted market prices, broker/dealer quotes or alternative pricing sources with observable levels of price transparency. As of December 31, 2017, the types of instruments valued based on quoted market prices in active markets included money market funds, certain U.S. Treasury securities and U.S. Government agency securities. Such instruments are generally classified within Level 1 of the fair value hierarchy.

As of December 31, 2017, the types of instruments valued based on other observable inputs included corporate debt securities, U.S. Treasury securities and sovereign securities. The market inputs used to value these instruments generally consist of market yields, reported trades and broker/dealer quotes. Such instruments are generally classified within Level 2 of the fair value hierarchy.

The principal market in which the Company executes its foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants generally are large financial institutions. The Company’s foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment. These contracts are typically classified within Level 2 of the fair value hierarchy.

Financial assets (excluding cash held in operating accounts and time deposits) and liabilities measured at fair value on a recurring basis, as of the date indicated below, were presented on the Company’s Condensed Consolidated Balance Sheet as follows:

As of December 31, 2017 (In thousands)	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents:
Money market funds and other	$	569,287		$	569,287	$	—
U.S. Treasury securities	3,745			—		3,745
Marketable securities:
Corporate debt securities	914,358			—		914,358
Sovereign securities	11,427			—		11,427
U.S. Treasury securities	404,983			394,486		10,497
U.S. Government agency securities	339,730			339,730		—
Total cash equivalents and marketable securities(1)	2,243,530			1,303,503		940,027
Other current assets:
Derivative assets	4,474			—		4,474
Other non-current assets:
Executive Deferred Savings Plan	192,169			142,809		49,360
Total financial assets(1)	$	2,440,173		$	1,446,312	$	993,861
Liabilities
Other current liabilities:
Derivative liabilities	$	(415	)	$	—	$	(415	)
Total financial liabilities	$	(415	)	$	—	$	(415	)

________________

(1) Excludes cash of $481.1 million held in operating accounts and time deposits of $33.6 million as of December 31, 2017.

Financial assets (excluding cash held in operating accounts and time deposits) and liabilities measured at fair value on a recurring basis, as of the date indicated below, were presented on the Company’s Condensed Consolidated Balance Sheet as follows:

As of June 30, 2017 (In thousands)	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents:
Corporate debt securities	$	76,472		$	—	$	76,472
Money market funds and other	616,039			616,039		—
U.S. Government agency securities	117,417			—		117,417
Sovereign securities	10,050			—		10,050
Marketable securities:
Corporate debt securities	1,042,723			—		1,042,723
Sovereign securities	42,515			—		42,515
U.S. Government agency securities	391,409			368,121		23,288
U.S. Treasury securities	373,299			373,299		—
Total cash equivalents and marketable securities(1)	2,669,924			1,357,459		1,312,465
Other current assets:
Derivative assets	5,931			—		5,931
Other non-current assets:
Executive Deferred Savings Plan	182,150			136,145		46,005
Total financial assets(1)	$	2,858,005		$	1,493,604	$	1,364,401
Liabilities
Other current liabilities:
Derivative liabilities	$	(1,275	)	$	—	$	(1,275	)
Total financial liabilities	$	(1,275	)	$	—	$	(1,275	)

________________

(1) Excludes cash of $307.4 million held in operating accounts and time deposits of $39.4 million as of June 30, 2017.

There were no transfers between Level 1 and Level 2 fair value measurements during the six months ended December 31, 2017. The Company generally did not have any assets or liabilities measured at fair value on a recurring basis within Level 3 fair value measurements as of December 31, 2017 or June 30, 2017.

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Financial Statement Components

6 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

FINANCIAL STATEMENT COMPONENTS

NOTE 3 – FINANCIAL STATEMENT COMPONENTS

Balance Sheet Components

(In thousands)	As of December 31, 2017			As of June 30, 2017
Accounts receivable, net:
Accounts receivable, gross	$	752,618		$	592,753
Allowance for doubtful accounts	(11,715		)	(21,636		)
	$	740,903		$	571,117
Inventories:
Customer service parts	$	248,937		$	245,172
Raw materials	248,475			240,389
Work-in-process	237,261			193,026
Finished goods	53,298			54,401
	$	787,971		$	732,988
Other current assets:
Prepaid expenses	$	46,451		$	36,146
Other current assets	11,512			13,004
Income tax related receivables	8,966			22,071
	$	66,929		$	71,221
Land, property and equipment, net:
Land	$	40,620		$	40,617
Buildings and leasehold improvements	323,143			319,306
Machinery and equipment	568,203			551,277
Office furniture and fixtures	21,909			21,328
Construction-in-process	7,214			4,597
	961,089			937,125
Less: accumulated depreciation and amortization	(679,455		)	(653,150		)
	$	281,634		$	283,975
Other non-current assets:
Executive Deferred Savings Plan(1)	$	192,169		$	182,150
Other non-current assets	19,146			13,526
	$	211,315		$	195,676
Other current liabilities:
Compensation and benefits	$	222,503		$	172,707
Executive Deferred Savings Plan(1)	192,849			183,603
Customer credits and advances	116,856			95,188
Other accrued expenses	86,865			116,039
Warranty	45,013			45,458
Income taxes payable	22,525			17,040
Interest payable	17,008			19,396
	$	703,619		$	649,431
Other non-current liabilities:
Income taxes payable	$	355,849		$	68,439
Pension liabilities	74,868			72,801
Other non-current liabilities	30,025			31,167
	$	460,742		$	172,407

________________

(1) KLA-Tencor has a non-qualified deferred compensation plan (known as “Executive Deferred Savings Plan”) under which certain executives and non-employee directors may defer a portion of their compensation. Participants are credited with returns based on their allocation of their account balances among measurement funds. The Company controls the investment of these funds, and the participants remain general creditors of the Company. The Company invests these funds in certain mutual funds and such investments are classified as trading securities in the condensed consolidated balance sheets. Distributions from the Executive Deferred Savings Plan commence following a participant’s retirement or termination of employment or on a specified date allowed per the Executive Deferred Savings Plan provisions, except in cases where such distributions are required to be delayed in order to avoid a prohibited distribution under Internal Revenue Code Section 409A. Participants can generally elect the distributions to be paid in lump sum or quarterly cash payments over a scheduled period for up to 15 years and are allowed to make subsequent changes to their existing elections as permissible under the Executive Deferred Savings Plan provisions. Changes in the Executive Deferred Savings Plan liability are recorded in selling, general and administrative expense in the condensed consolidated statements of operations. The expense associated with changes in the liability included in selling, general and administrative expense was $7.0 million and $1.2 million during the three months ended December 31, 2017 and 2016, respectively and $13.8 million and $7.0 million during the six months ended December 31, 2017 and 2016. Changes in the Executive Deferred Savings Plan assets are recorded as gains (losses), net in selling, general and administrative expense in the condensed consolidated statements of operations. The amount of net gains included in selling, general and administrative expense was $7.0 million and $0.8 million during the three months ended December 31, 2017 and 2016, respectively and $13.9 million and $6.7 million during the six months ended December 31, 2017 and 2016, respectively.

Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income (loss) (“OCI”) as of the dates indicated below were as follows:

(In thousands)	Currency Translation Adjustments			Unrealized Gains (Losses) on Available-for-Sale Securities			Unrealized Gains (Losses) on Cash Flow Hedges		Unrealized Gains (Losses) on Defined Benefit Plans			Total
Balance as of December 31, 2017	$	(26,614	)	$	(7,751	)	$	3,957	$	(22,114	)	$	(52,522	)
Balance as of June 30, 2017	$	(30,654	)	$	(3,869	)	$	5,221	$	(22,021	)	$	(51,323	)

The effects on net income (loss) of amounts reclassified from accumulated OCI to the Condensed Consolidated Statement of Operations for the indicated period were as follows (in thousands):

	Location in the Condensed Consolidated	Three months ended December 31,						Six months ended December 31,
Accumulated OCI Components	Statements of Operations	2017			2016			2017			2016
Unrealized gains (losses) on cash flow hedges from foreign exchange and interest rate contracts	Revenues	$	397		$	(1,425	)	$	1,365		$	(2,906	)
	Costs of revenues	377			(69		)	1,338			(156		)
	Interest expense	189			189			378			378
	Net gains (losses) reclassified from accumulated OCI	$	963		$	(1,305	)	$	3,081		$	(2,684	)
Unrealized gains (losses) on available-for-sale securities	Other expense (income), net	$	(69	)	$	30		$	(63	)	$	234

The amounts reclassified out of accumulated OCI related to the Company’s defined benefit pension plans, which were recognized as a component of net periodic cost for the three and six months ended December 31, 2017 were $0.4 million and $0.8 million, respectively. The amounts reclassified out of accumulated OCI related to the Company’s defined benefit pension plans, which were recognized as a component of net periodic cost for the three and six months ended December 31, 2016 were $0.9 million and $1.3 million, respectively. For additional details, refer to Note 11, “Employee Benefit Plans” in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2017.

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Marketable Securities

6 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

MARKETABLE SECURITIES

NOTE 4 – MARKETABLE SECURITIES

The amortized cost and fair value of marketable securities as of the dates indicated below were as follows:

As of December 31, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	918,399	$	204	$	(4,245	)	$	914,358
Money market funds and other	569,287		—		—			569,287
Sovereign securities	11,496		—		(69		)	11,427
U.S. Government agency securities	342,325		16		(2,611		)	339,730
U.S. Treasury securities	411,669		—		(2,941		)	408,728
Subtotal	2,253,176		220		(9,866		)	2,243,530
Add: Time deposits(1)	33,581		—		—			33,581
Less: Cash equivalents	592,315		—		—			592,315
Marketable securities	$	1,694,442	$	220	$	(9,866	)	$	1,684,796

As of June 30, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	1,120,548	$	598	$	(1,951	)	$	1,119,195
Money market funds and other	616,039		—		—			616,039
Sovereign securities	52,621		—		(56		)	52,565
U.S. Government agency securities	510,553		62		(1,789		)	508,826
U.S. Treasury securities	374,676		52		(1,429		)	373,299
Subtotal	2,674,437		712		(5,225		)	2,669,924
Add: Time deposits(1)	39,389		—		—			39,389
Less: Cash equivalents	845,639		—		(15		)	845,624
Marketable securities	$	1,868,187	$	712	$	(5,210	)	$	1,863,689

________________

(1) Time deposits excluded from fair value measurements.

KLA-Tencor’s investment portfolio consists of both corporate and government securities that have a maximum maturity of three years. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As yields increase, those securities with a lower yield-at-cost show a mark-to-market unrealized loss. All unrealized losses are due to changes in market interest rates, bond yields and/or credit ratings. The Company believes that it has the ability to realize the full value of all of these investments upon maturity. The following table summarizes the fair value and gross unrealized losses of the Company’s investments that were in an unrealized loss position as of the date indicated below:

As of December 31, 2017 (In thousands)	Fair Value		Gross Unrealized Losses(1)
Corporate debt securities	$	792,436	$	(4,245	)
U.S. Treasury securities	404,982		(2,941		)
U.S. Government agency securities	334,064		(2,611		)
Sovereign securities	11,427		(69		)
Total	$	1,542,909	$	(9,866	)

__________________ 

(1) As of December 31, 2017, the amount of total gross unrealized losses related to investments that had been in a continuous loss position for 12 months or more was $5.3 million.

The contractual maturities of securities classified as available-for-sale, regardless of their classification on the Company’s Condensed Consolidated Balance Sheet, as of the date indicated below were as follows:

As of December 31, 2017 (In thousands)	Amortized Cost		Fair Value
Due within one year	$	521,930	$	520,623
Due after one year through three years	1,172,512		1,164,173
	$	1,694,442	$	1,684,796

Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Realized gains and losses on available-for-sale securities for the three and six months ended December 31, 2017 and 2016 were immaterial.

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Business Combination

6 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

BUSINESS COMBINATION

NOTE 5 - BUSINESS COMBINATION

On June 9, 2017, the Company completed the acquisition of the outstanding shares of a privately-held company that designs and manufactures optical profilers and inspection systems for advanced semiconductor packaging, LED and data storage industries, for total purchase consideration of $37.1 million, inclusive of post-closing working capital adjustments. The remaining acquisition holdback amount of $4.8 million was paid during the three months ended December 31, 2017. The primary reason for the acquisition is to expand the Company’s portfolio of products.

The following table represents the preliminary purchase price allocation and summarizes the aggregate estimated fair value of the net assets acquired, including a post-closing working capital adjustment:

(In thousands)	Preliminary Purchase Price Allocation
Intangible assets	$	17,660
Goodwill	14,764
Assets acquired (including cash and marketable securities of $3.2 million)	5,981
Liabilities assumed	(1,334		)
Fair value of net assets acquired	$	37,071

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired. The $14.8 million of goodwill was assigned to the Global Service and Support (“GSS”), and the Other reporting units. None of the goodwill recognized is deductible for income tax purposes.

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Goodwill and Purchased Intangible Assets

6 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND PURCHASED INTANGIBLE ASSETS

NOTE 6 – GOODWILL AND PURCHASED INTANGIBLE ASSETS

Goodwill

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in prior business combinations. The Company has four reporting units: Wafer Inspection, Patterning, Global Service and Support, and Others. The following table presents goodwill balances and the movements by reporting unit during the six months ended December 31, 2017:

(In thousands)	Wafer Inspection		Patterning		GSS		Others		Total
Balance as of June 30, 2017	$	281,095	$	53,255	$	2,856	$	12,320	$	349,526
Foreign currency and other adjustments	13		—		97		387		497
Balance as of December 31, 2017	$	281,108	$	53,255	$	2,953	$	12,707	$	350,023

Goodwill is net of accumulated impairment losses of $277.6 million, which were recorded prior to the fiscal year ended June 30, 2014.

The Company performed a qualitative assessment of the goodwill by reporting unit as of November 30, 2017 during the three months ended December 31, 2017 as part of its annual goodwill impairment assessment and concluded that it was more likely than not that the fair value of each of the reporting units exceeded its carrying amount. As a result of the Company’s determination following its qualitative assessment, it was not necessary to perform the quantitative goodwill impairment test at this time. In assessing the qualitative factors, the Company considered the impact of key factors, including changes in the industry and competitive environment, market capitalization, stock price, earnings multiples, budgeted-to-actual revenue performance from prior year, gross margin and cash flows from operating activities.

Based on the Company’s assessment, goodwill in the reporting units was not impaired as of December 31, 2017 or June 30, 2017.

Purchased Intangible Assets

The components of purchased intangible assets as of the dates indicated below were as follows:

(In thousands)		As of December 31, 2017						As of June 30, 2017
Category	Range of Useful Lives	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Amount		Gross Carrying Amount		Accumulated Amortization and Impairment		Net Amount
Existing technology	4-7 years	$	157,259	$	142,459	$	14,800	$	157,259	$	140,346	$	16,913
Trade name/Trademark	7 years	20,993		19,981		1,012		20,993		19,902		1,091
Customer relationships	7-8 years	55,680		55,036		644		55,680		54,959		721
Backlog	<1 year	260		153		107		260		22		238
Total		$	234,192	$	217,629	$	16,563	$	234,192	$	215,229	$	18,963

Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable.

For the three months ended December 31, 2017 and 2016, amortization expense for purchased intangible assets was $1.2 million and $0.5 million, respectively. For the six months ended December 31, 2017 and 2016, amortization expense for purchased intangible assets was $2.4 million and $1.8 million, respectively. Based on the intangible assets recorded as of December 31, 2017, and assuming no subsequent additions to, or impairment of, the underlying assets, the remaining estimated amortization expense is expected to be as follows:

Fiscal year ending June 30:	Amortization (In thousands)
2018 (remaining 6 months)	$	1,851
2019	2,486
2020	2,486
2021	2,486
2022	2,486
Thereafter	4,768
Total	$	16,563

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Debt

6 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

DEBT

NOTE 7 – DEBT

The following table summarizes the debt of the Company as of December 31, 2017 and June 30, 2017:

	As of December 31, 2017					As of June 30, 2017
	Amount (In thousands)			Effective Interest Rate		Amount (In thousands)			Effective Interest Rate
Fixed-rate 2.375% Senior notes due on November 1, 2017	$	—		—	%	$	250,000		2.396	%
Fixed-rate 3.375% Senior notes due on November 1, 2019	250,000			3.377	%	250,000			3.377	%
Fixed-rate 4.125% Senior notes due on November 1, 2021	500,000			4.128	%	500,000			4.128	%
Fixed-rate 4.650% Senior notes due on November 1, 2024(1)	1,250,000			4.682	%	1,250,000			4.682	%
Fixed-rate 5.650% Senior notes due on November 1, 2034	250,000			5.670	%	250,000			5.670	%
Term loans	—			—	%	446,250			2.137	%
Revolving Credit Facility	250,000			2.634	%	—			—	%
Total debt	2,500,000					2,946,250
Unamortized discount	(2,704		)			(2,901		)
Unamortized debt issuance costs	(10,870		)			(12,892		)
Total debt	$	2,486,426				$	2,930,457
Reported as:
Current portion of long-term debt	$	—				$	249,983
Long-term debt	2,486,426					2,680,474
Total debt	$	2,486,426				$	2,930,457

__________________ 

(1) The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.

As of December 31, 2017, future principal payments for the debt are summarized as follows:

Fiscal year ending June 30:	Amount (In thousands)
2018 (remaining 6 months)	$	—
2019	—
2020	250,000
2021	—
2022	500,000
Thereafter	1,750,000
Total payments	$	2,500,000

Senior Notes:

In November 2014, the Company issued $2.50 billion aggregate principal amount of senior, unsecured long-term notes (collectively referred to as “Senior Notes”). The Company issued the Senior Notes as part of the leveraged recapitalization plan under which the proceeds from the Senior Notes in conjunction with the proceeds from the term loans (described below) and cash on hand were used (x) to fund a special cash dividend of $16.50 per share, aggregating to approximately $2.76 billion, (y) to redeem $750.0 million of 2018 Senior Notes, including associated redemption premiums, accrued interest and other fees and expenses and (z) for other general corporate purposes, including repurchases of shares pursuant to the Company’s stock repurchase program. The interest rate specified for each series of the Senior Notes will be subject to adjustments from time to time if Moody’s Investor Service, Inc. (“Moody’s”) or Standard & Poor’s Ratings Services (“S&P”) or, under certain circumstances, a substitute rating agency selected by us as a replacement for Moody’s or S&P, as the case may be (a “Substitute Rating Agency”), downgrades (or subsequently upgrades) its rating assigned to the respective series of Senior Notes such that the adjusted rating is below investment grade. If the adjusted rating of any series of Senior Notes from Moody’s (or, if applicable, any Substitute Rating Agency) is decreased to Ba1, Ba2, Ba3 or B1 or below, the stated interest rate on such series of Senior Notes as noted above will increase by 25 bps, 50 bps, 75 bps or 100 bps, respectively (“bps” refers to Basis Points and 1% is equal to 100 bps). If the rating of any series of Senior Notes from S&P (or, if applicable, any Substitute Rating Agency) with respect to such series of Senior Notes is decreased to BB+, BB, BB- or B+ or below, the stated interest rate on such series of Senior Notes as noted above will increase by 25 bps, 50 bps, 75 bps or 100 bps, respectively. The interest rates on any series of Senior Notes will permanently cease to be subject to any adjustment (notwithstanding any subsequent decrease in the ratings by any of Moody’s, S&P and, if applicable, any Substitute Rating Agency) if such series of Senior Notes becomes rated “Baa1” (or its equivalent) or higher by Moody’s (or, if applicable, any Substitute Rating Agency) and “BBB+” (or its equivalent) or higher by S&P (or, if applicable, any Substitute Rating Agency), or one of those ratings if rated by only one of Moody’s, S&P and, if applicable, any Substitute Rating Agency, in each case with a stable or positive outlook. In October 2014, the Company entered into a series of forward contracts to lock the 10-year treasury rate (“benchmark rate”) on a portion of the Senior Notes with a notional amount of $1.00 billion in aggregate. For additional details, refer to Note 14, “Derivative Instruments and Hedging Activities.”

The original discount on the Senior Notes amounted to $4.0 million and is being amortized over the life of the debt. Interest is payable semi-annually on May 1 and November 1 of each year. The debt indenture (the “Indenture”) includes covenants that limit the Company’s ability to grant liens on its facilities and enter into sale and leaseback transactions, subject to certain allowances under which certain sale and leaseback transactions are not restricted.

In certain circumstances involving a change of control followed by a downgrade of the rating of a series of Senior Notes by at least two of Moody’s, S&P and Fitch Inc., unless the Company has exercised its right to redeem the Senior Notes of such series, the Company will be required to make an offer to repurchase all or, at the holder’s option, any part, of each holder’s Senior Notes of that series pursuant to the offer described below (the “Change of Control Offer”). In the Change of Control Offer, the Company will be required to offer payment in cash equal to 101% of the aggregate principal amount of Senior Notes repurchased plus accrued and unpaid interest, if any, on the Senior Notes repurchased, up to, but not including, the date of repurchase.

In November 2017, the Company repaid $250.0 million of Senior Notes at maturity. Based on the trading prices of the Senior Notes on the applicable dates, the fair value of the Senior Notes as of December 31, 2017 and June 30, 2017 was approximately $2.41 billion and $2.67 billion, respectively. While the Senior Notes are recorded at cost, the fair value of the long-term debt was determined based on quoted prices in markets that are not active; accordingly, the long-term debt is categorized as Level 2 for purposes of the fair value measurement hierarchy.

As of December 31, 2017, the Company was in compliance with all of its covenants under the Indenture associated with the Senior Notes.

Credit Facility (Term Loans and Unfunded Revolving Credit Facility) and Revolving Credit Facility:

In November 2014, the Company entered into $750.0 million of five-year senior unsecured prepayable term loans and a $500.0 million unfunded revolving credit facility (collectively, the “Credit Facility”).

In November 2017, the Company entered into a Credit Agreement (the “Credit Agreement”) providing for a $750.0 millionfive-year unsecured revolving credit facility (the “Revolving Credit Facility”), which replaced its prior Credit Facility. Subject to the terms of the Credit Agreement, the Revolving Credit Facility may be increased in an amount up to $250.0 million in the aggregate. As of December 31, 2017 after giving effect to the borrowings made on the closing date, the Company had outstanding $250.0 million aggregate principal amount of borrowings under the Revolving Credit Facility. The proceeds from the borrowings on the closing date, together with the cash on hand was used to pay in full the remaining term loan balance under the Credit Facility.

The Company may borrow, repay and reborrow funds under the Revolving Credit Facility until its maturity on November 30, 2022 (the “Maturity Date”), at which time such Revolving Credit Facility will terminate, and all outstanding loans under such facility, together with all accrued and unpaid interest, must be repaid. The Company may prepay the Revolving Credit Facility at any time without a prepayment penalty.

Borrowings under the Revolving Credit Facility will bear interest, at the Company’s option, at either: (i) the Alternative Base Rate (“ABR”) plus a spread, which ranges from 0 bps to 75 bps, or (ii) the London Interbank Offered Rate (“LIBOR”) plus a spread, which ranges from 100 bps to175 bps. The spreads under ABR and LIBOR are subject to adjustment in conjunction with credit rating downgrades or upgrades. The Company is also obligated to pay an annual commitment fee on the daily undrawn balance of the Revolving Credit Facility, which ranges from 10 bps to 25 bps, subject to an adjustment in conjunction with changes to the Company’s credit rating. As of December 31, 2017, the Company elected to pay interest on the borrowed amount under the Revolving Credit Facility at LIBOR plus a spread of 125 bps, and an annual commitment fee of 15 bps on the daily undrawn balance of the Revolving Credit Facility.

The Revolving Credit Facility requires the Company to maintain an interest expense coverage ratio as described in the Credit Agreement, on a quarterly basis, covering the trailing four consecutive fiscal quarters of no less than 3.50 to 1.00. In addition, the Company is required to maintain the maximum leverage ratio as described in the Credit Agreement, on a quarterly basis of 3.00 to 1.00, covering the trailing four consecutive fiscal quarters for each fiscal quarter, which can be increased to 4.00 to 1.00 for a period of time in connection with a material acquisition or a series of material acquisitions.

The Company was in compliance with all covenants under the Credit Agreement as of December 31, 2017.

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Equity and Long-Term Incentive Compensation Plans

6 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

EQUITY AND LONG-TERM INCENTIVE COMPENSATION PLANS

NOTE 8 – EQUITY AND LONG-TERM INCENTIVE COMPENSATION PLANS

Equity Incentive Program

As of December 31, 2017, the Company had two plans under which the Company was able to issue equity incentive awards, such as restricted stock units and stock options, to its employees, consultants and members of its Board of Directors: the 2004 Equity Incentive Plan (the “2004 Plan”) and the 1998 Director Plan (the “Outside Director Plan”).

2004 Plan:

The 2004 Plan provides for the grant of options to purchase shares of the Company’s common stock, stock appreciation rights, restricted stock units, performance shares, performance units and deferred stock units to the Company’s employees, consultants and members of its Board of Directors. As of December 31, 2017, 2.5 million shares were available for issuance under the 2004 Plan.

Any 2004 Plan awards of restricted stock units, performance shares, performance units or deferred stock units with a per share or unit purchase price lower than 100% of fair market value on the grant date are counted against the total number of shares issuable under the 2004 Plan as follows, based on the grant date of the applicable award: (a) for any such awards granted before November 6, 2013, the awards counted against the 2004 Plan share reserve as 1.8 shares for every one share subject thereto; and (b) for any such awards granted on or after November 6, 2013, the awards count against the 2004 Plan share reserve as 2.0 shares for every one share subject thereto.

In addition, the plan administrator has the ability to grant “dividend equivalent” rights in connection with awards of restricted stock units, performance shares, performance units and deferred stock units before they are fully vested. The plan administrator, at its discretion, may grant a right to receive dividends on the aforementioned awards which may be settled in cash or Company stock at the discretion of the plan administrator subject to meeting the vesting requirement of the underlying awards.

Outside Director Plan

The Outside Director Plan only permits the issuance of stock options to the non-employee members of the Board of Directors. As of December 31, 2017, 1.7 million shares were available for grant under the Outside Director Plan.

Equity Incentive Plans - General Information

The following table summarizes the combined activity under the Company’s equity incentive plans for the indicated periods:

(In thousands)	Available For Grant(1)
Balance as of June 30, 2017	4,710
Restricted stock units granted (2)	(665	)
Restricted stock units granted adjustment (3)	33
Restricted stock units canceled	59
Balance as of December 31, 2017	4,137

__________________ 

(1) The number of restricted stock units reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).

(2) Includes restricted stock units granted to senior management during the six months ended December 31, 2017 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units granted during the six months ended December 31, 2017, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.3 million shares for the six months ended December 31, 2017 reflects the application of the multiplier described above).

(3) Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the six months ended December 31, 2017.

The fair value of stock-based awards is measured at the grant date and is recognized as an expense over the employee’s requisite service period. For restricted stock units granted without “dividend equivalent” rights, fair value is calculated using the closing price of the Company’s common stock on the grant date, adjusted to exclude the present value of dividends which are not accrued on those restricted stock units. The fair value for restricted stock units granted with “dividend equivalent” rights is determined using the closing price of the Company’s common stock on the grant date. As of December 31, 2017, the Company accrued $7.6 million of dividends payable, which included both a special cash dividend and regular quarterly cash dividends for the unvested restricted stock units outstanding as of the dividend record date. The fair value for purchase rights under the Company’s Employee Stock Purchase Plan is determined using a Black-Scholes valuation model.

The following table shows pre-tax stock-based compensation expense for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Stock-based compensation expense by:
Costs of revenues	$	1,656	$	1,305	$	3,072	$	2,567
Research and development	2,275		2,052		4,446		4,073
Selling, general and administrative	9,808		9,087		20,252		17,282
Total stock-based compensation expense	$	13,739	$	12,444	$	27,770	$	23,922

The following table shows stock-based compensation capitalized as inventory as of the dates indicated below:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Inventory	$	3,039	$	2,820

Restricted Stock Units

The following table shows the applicable number of restricted stock units and weighted-average grant date fair value for restricted stock units granted, vested and released, withheld for taxes, and forfeited during the six months ended December 31, 2017 and restricted stock units outstanding as of December 31, 2017 and June 30, 2017:

Restricted Stock Units	Shares(1) (In thousands)		Weighted-Average Grant Date Fair Value
Outstanding restricted stock units as of June 30, 2017(2)	2,241		$	68.24
Granted(2)	333		$	91.39
Granted adjustments(3)	(17	)	$	74.26
Vested and released	(379	)	$	63.22
Withheld for taxes	(283	)	$	63.22
Forfeited	(30	)	$	66.10
Outstanding restricted stock units as of December 31, 2017(2)	1,865		$	74.13

__________________ 

(1) Share numbers reflect actual shares subject to awarded restricted stock units. As described above, under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.

(2) Includes restricted stock units granted to senior management with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units, reported at the maximum possible number of shares (0.3 million shares for the fiscal year ended June 30, 2016, 42 thousand shares for the fiscal year ended June 30, 2017 and 0.2 million shares for the six months ended December 31, 2017) that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied.

(3) Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during six months ended December 31, 2017.

The restricted stock units granted by the Company generally vest (a) with respect to awards with only service-based vesting criteria, in three or four equal installments and (b) with respect to awards with both performance-based and service-based vesting criteria, in two equal installments on the third and fourth anniversaries of the grant date, in each case subject to the recipient remaining employed by the Company as of the applicable vesting date. The restricted stock units granted to the independent members of the board of directors vest annually. 

The following table shows the weighted-average grant date fair value per unit for the restricted stock units granted and the restricted stock units vested and tax benefits realized by the Company in connection with vested and released restricted stock units for the indicated periods:

	Three months ended December 31,					Six months ended December 31,
(In thousands, except for weighted-average grant date fair value)	2017			2016		2017		2016
Weighted-average grant date fair value per unit	$	105.15		$	75.38	$	91.39	$	70.95
Grant date fair value of vested restricted stock units	$	5,322		$	1,843	$	41,856	$	31,051
Tax benefits (expense) realized by the Company in connection with vested and released restricted stock units	$	(1,930	)	$	765	$	16,482	$	14,694

As of December 31, 2017, the unrecognized stock-based compensation expense balance related to restricted stock units was $104.8 million, excluding the impact of estimated forfeitures, and will be recognized over a weighted-average remaining contractual term and an estimated weighted-average amortization period of 1.6 years. The intrinsic value of outstanding restricted stock units as of December 31, 2017 was $196.0 million.

Cash-Based Long-Term Incentive Compensation

The Company has adopted a cash-based long-term incentive (“Cash LTI”) program for many of its employees as part of the Company’s employee compensation program. During the six months ended December 31, 2017 and 2016, the Company approved Cash LTI awards of $4.0 million and $50.3 million, respectively under the Company’s Cash Long-Term Incentive Plan (“Cash LTI Plan”). The Company changed the timing of its annual grants for its employees resulting in the Cash LTI awards being lower during the six months ended December 31, 2017 compared to the six months ended December 31, 2016. Cash LTI awards issued to employees under the Cash LTI Plan will vest in three or four equal installments, with one-third or one-fourth of the aggregate amount of the Cash LTI award vesting on each anniversary of the grant date over a three or four-year period. In order to receive payments under a Cash LTI award, participants must remain employed by the Company as of the applicable award vesting date. Executives and non-employee Board members are not participating in this program. During the three months ended December 31, 2017 and 2016, the Company recognized $11.5 million and $11.2 million, respectively, in compensation expense under the Cash LTI Plan. During the six months ended December 31, 2017 and 2016, the Company recognized $26.3 million and $23.4 million, respectively, in compensation expense under the Cash LTI Plan. As of December 31, 2017, the unrecognized compensation balance (excluding the impact of estimated forfeitures) related to the Cash LTI Plan was $102.4 million.

Employee Stock Purchase Plan

KLA-Tencor’s Employee Stock Purchase Plan (“ESPP”) provides that eligible employees may contribute up to 10% of their eligible earnings toward the semi-annual purchase of KLA-Tencor’s common stock. Effective January 2, 2018, eligible employees may contribute up to 15% of their eligible earnings. The ESPP is qualified under Section 423 of the Internal Revenue Code. The employee’s purchase price is derived from a formula based on the closing price of the common stock on the first day of the offering period versus the closing price on the date of purchase (or, if not a trading day, on the immediately preceding trading day).

The offering period (or length of the look-back period) under the ESPP has a duration of six months, and the purchase price with respect to each offering period beginning on or after such date is, until otherwise amended, equal to 85% of the lesser of (i) the fair market value of the Company’s common stock at the commencement of the applicable six-month offering period or (ii) the fair market value of the Company’s common stock on the purchase date. The Company estimates the fair value of purchase rights under the ESPP using a Black-Scholes valuation model.

The fair value of each purchase right under the ESPP was estimated on the date of grant using the Black-Scholes option valuation model and the straight-line attribution approach with the following weighted-average assumptions:

	Three months ended December 31,				Six months ended December 31,
	2017		2016		2017		2016
Stock purchase plan:
Expected stock price volatility	25.9	%	20.6	%	25.9	%	20.6	%
Risk-free interest rate	0.9	%	0.4	%	0.9	%	0.4	%
Dividend yield	2.6	%	3.0	%	2.6	%	3.0	%
Expected life (in years)	0.5		0.5		0.5		0.5

The following table shows the tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP and the weighted-average fair value per share for the indicated periods:

(In thousands, except for weighted-average fair value per share)	Three months ended December 31,				Six months ended December 31,
	2017		2016		2017		2016
Total cash received from employees for the issuance of shares under the ESPP	$	20,579	$	23,694	$	20,579	$	23,694
Number of shares purchased by employees through the ESPP	264		384		264		384
Tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP	$	47	$	218	$	894	$	922
Weighted-average fair value per share based on Black-Scholes model	$	19.04	$	14.05	$	19.04	$	14.05

The ESPP shares are replenished annually on the first day of each fiscal year by virtue of an evergreen provision. The provision allows for share replenishment equal to the lesser of 2.0 million shares or the number of shares which KLA-Tencor estimates will be required to be issued under the ESPP during the forthcoming fiscal year. As of December 31, 2017, a total of 2.4 million shares were reserved and available for issuance under the ESPP.

Quarterly cash dividends

On November 1, 2017, the Company’s Board of Directors declared a regular quarterly cash dividend of $0.59 per share on the outstanding shares of the Company’s common stock, which was paid on December 1, 2017 to the stockholders of record as of the close of business on November 15, 2017. The total amount of regular quarterly cash dividends and dividend equivalents paid by the Company during the three months ended December 31, 2017 and 2016 was $92.6 million and $84.5 million, respectively. The total amount of regular quarterly cash dividends and dividend equivalents paid by the Company during the six months ended December 31, 2017 and 2016 was $186.7 million and $166.1 million, respectively.The amount of accrued dividends payable for regular quarterly cash dividends on unvested restricted stock units with dividend equivalent rights as of December 31, 2017 and June 30, 2017 was $4.8 million and $4.8 million, respectively. These amounts will be paid upon vesting of the underlying restricted stock units.

Special cash dividend

On November 19, 2014, the Company’s Board of Directors declared a special cash dividend of $16.50 per share on our outstanding common stock, which was paid on December 9, 2014 to the stockholders of record as of the close of business on December 1, 2014. The declaration and payment of the special cash dividend was part of the Company’s leveraged recapitalization transaction under which the special cash dividend was financed through a combination of existing cash and proceeds from the debt financing disclosed in Note 7, “Debt” that was completed during the three months ended December 31, 2014. As of the declaration date, the total amount of the special cash dividend accrued by the Company was approximately $2.76 billion, substantially all of which was paid out during the three months ended December 31, 2014, except for the aggregate special cash dividend of $43.0 million that was accrued for the unvested restricted stock units. As of December 31, 2017 and June 30, 2017, the Company had a total of $2.8 million and $9.0 million, respectively, of accrued dividends payable for the special cash dividend with respect to outstanding unvested restricted stock units, which will be paid when such underlying unvested restricted stock units vest. During the three months ended December 31, 2017 and 2016, the total special cash dividends paid with respect to vested restricted stock units were immaterial. During the six months ended December 31, 2017 and 2016, the total special cash dividends paid with respect to vested restricted stock units were $6.2 million and $7.7 million, respectively. Other than the special cash dividend declared during the three months ended December 31, 2014, the Company historically has not declared any special cash dividend.

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Stock Repurchase Program

6 Months Ended

Dec. 31, 2017

Equity [Abstract]

STOCK REPURCHASE PROGRAM

NOTE 9 – STOCK REPURCHASE PROGRAM

The Company’s Board of Directors has authorized a program for the Company to repurchase shares of the Company’s common stock. The intent of this program is to offset the dilution from KLA-Tencor’s equity incentive plans and employee stock purchase plan, as well as to return excess cash to the Company’s stockholders. Subject to market conditions, applicable legal requirements and other factors, the repurchases were made in the open market in compliance with applicable securities laws, including the Securities Exchange Act of 1934 and the rules promulgated thereunder, such as Rule 10b-18 and Rule 10b5-1. As of December 31, 2017, an aggregate of approximately 4.9 million shares were available for repurchase under the Company’s repurchase program.

Share repurchases for the indicated periods (based on the trade date of the applicable repurchase) were as follows:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Number of shares of common stock repurchased	388		—		822		—
Total cost of repurchases	$	40,868	$	—	$	81,643	$	—

As of December 31, 2017, the Company had repurchased 12 thousand shares for $1.3 million, which repurchases had not settled prior to December 31, 2017. The amount was recorded as a component of other current liabilities for the period presented.

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Net Income (Loss) Per Share

6 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

NOTE 10 – NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is calculated by dividing net income (loss) available to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is calculated by using the weighted-average number of common shares outstanding during the period, increased to include the number of additional shares of common stock that would have been outstanding if the shares of common stock underlying the Company’s outstanding dilutive restricted stock units and stock options had been issued. The dilutive effect of outstanding restricted stock units and options is reflected in diluted net income per share by application of the treasury stock method. The dilutive securities are excluded from the computation of diluted net loss per share when a net loss is recorded for the period as their effect would be anti-dilutive.

The following table sets forth the computation of basic and diluted net income (loss) per share:

(In thousands, except per share amounts)	Three months ended December 31,					Six months ended December 31,
	2017			2016		2017		2016
Numerator:
Net income (loss)	$	(134,319	)	$	238,251	$	146,617	$	416,352
Denominator:
Weighted-average shares-basic, excluding unvested restricted stock units	156,587			156,335		156,707		156,232
Effect of dilutive restricted stock units and options(1)	—			788		981		839
Weighted-average shares-diluted	156,587			157,123		157,688		157,071
Basic net income (loss) per share	$	(0.86	)	$	1.52	$	0.94	$	2.66
Diluted net income (loss) per share	$	(0.86	)	$	1.52	$	0.93	$	2.65
Anti-dilutive securities excluded from the computation of diluted net income per share	—			2		—		56

__________________

(1) The Company has not had any outstanding stock options since August 2016.

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Income Taxes

6 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

INCOME TAXES

NOTE 11 – INCOME TAXES

The following table provides details of income taxes:

	Three months ended December 31,						Six months ended December 31,
(Dollar amounts in thousands)	2017			2016			2017			2016
Income before income taxes	$	347,307		$	306,845		$	683,459		$	529,065
Provision for income taxes	$	481,626		$	68,594		$	536,842		$	112,713
Effective tax rate	138.7		%	22.4		%	78.5		%	21.3		%

The Company’s effective tax rate during the three and six months ended December 31, 2017 was impacted by the Tax Cuts and Jobs Act (“the Act”), which was enacted into law on December 22, 2017.  Income tax effects resulting from changes in tax laws are accounted for by the Company in accordance with the authoritative guidance, which requires that these tax effects be recognized in the period in which the law is enacted and the effects are recorded as a component of provision for income taxes from continuing operations. As a result, the Company made an additional provision for income tax resulting from the enactment of the Act during the three and six months ended December 31, 2017.

The Act includes significant changes to the U.S. corporate income tax system which reduces the U.S. federal corporate tax rate from 35.0% to 21.0% as of January 1, 2018; shifts to a modified territorial tax regime which requires companies to pay a transition tax on earnings of certain foreign subsidiaries that were previously tax deferred; and creates new taxes on certain foreign-sourced earnings. The decrease in the U.S. federal corporate tax rate from 35.0% to 21.0% results in a blended statutory tax rate of 28.1% for the fiscal year ending June 30, 2018. The new taxes for certain foreign-sourced earnings under the Act are effective for the Company after the fiscal year ending June 30, 2018.

Provision for income taxes increased by $413.0 million and $424.1 million during the three and six months ended December 31, 2017, respectively, primarily due to: (i) a transition tax of $340.9 million on the Company’s total post-1986 earnings and profits (“E&P”) which, prior to the enactment of the Act, was previously deferred from U.S. income taxes; and (ii) a $101.1 million increase in income tax expense as a result of the re-measurement of the Company’s deferred tax assets and liabilities based on the Act’s new corporate tax rate of 21.0%. The increase in provision for income taxes during the three and six months ended December 31, 2017 was partially offset by a decrease of $25.0 million relating to the reduction of the U.S. federal corporate tax rate from 35.0% to 28.1% for the fiscal year ending June 30, 2018. The amounts resulting from the transition tax are payable over a period of up to eight years.

As of December 31, 2017, the Company had not fully completed its accounting for the tax effects of the enactment of the Act. The Company’s provision for income taxes for the three and six months ended December 31, 2017 is based in part on a reasonable estimate of the effects on its transition tax and existing deferred tax balances. For the amounts which the Company was able to reasonably estimate, the Company recognized a provisional tax amount of $442.0 million, which is included as a component of provision for income taxes from continuing operations. The components of the provisional tax amounts are as follows:

• The Company recorded a provisional tax amount of $340.9 million for the transition tax liability. The Company has not yet completed the calculation of the total post-1986 foreign E&P and the income tax pools for all foreign subsidiaries. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when the Company finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. In addition, further interpretations from U.S. federal and state governments and regulatory organizations may change the provisional tax liability or the accounting treatment of the provisional tax liability.

• The Company recorded a provisional tax amount of $101.1 million to re-measure certain deferred tax assets and liabilities as a result of the enactment of the Act. The Company is still analyzing certain aspects of the Act and refining the estimate of the expected reversal of its deferred tax balances. This can potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts.

The Act also includes provisions for Global Intangible Low-Taxed Income (“GILTI”) wherein taxes on foreign income are imposed in excess of a deemed return on tangible assets of foreign corporations. This income will effectively be taxed at a 10.5% tax rate in general. As a result, the Company’s deferred tax assets and liabilities are being evaluated if the deferred tax assets and liabilities should be recognized for the basis differences expected to reverse as a result of GILTI provisions that are effective for the Company after the fiscal year ending June 30, 2018, or should the tax on GILTI provisions be recognized in the period the Act was signed into law. Because of the complexity of the new provisions, the Company is continuing to evaluate on how the provisions will be accounted for under the U.S. generally accepted accounting principles wherein companies are allowed to make an accounting policy election of either (i) account for GILTI as a component of tax expense in the period in which the Company is subject to the rules (the “period cost method”), or (ii) account for GILTI in the Company’s measurement of deferred taxes (the “deferred method”). Currently, the Company has not elected a method and will only do so after its completion of the analysis of the GILTI provisions and its election method will depend, in part, on analyzing its global income to determine whether the Company expects to have future U.S. inclusions in its taxable income related to GILTI and, if so, the impact that is expected.

In the normal course of business, the Company is subject to examination by tax authorities throughout the world. The Company is subject to United States federal income tax examination for all years beginning from the fiscal year ended June 30, 2014. The Company is subject to state income tax examinations for all years beginning from the fiscal year ended June 30, 2013. The Company is also subject to examinations in other major foreign jurisdictions, including Singapore, for all years beginning from the fiscal year ended June 30, 2013.

It is possible that certain examinations may be concluded in the next twelve months. The Company believes that it may recognize up to $12.6 million of its existing unrecognized tax benefits within the next twelve months as a result of the lapse of statutes of limitations and the resolution of examinations with various tax authorities.

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Litigation and Other Legal Matters

6 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

LITIGATION AND OTHER LEGAL MATTERS

NOTE 12 – LITIGATION AND OTHER LEGAL MATTERS

The Company is named from time to time as a party to lawsuits and other types of legal proceedings and claims in the normal course of its business. Actions filed against the Company include commercial, intellectual property, customer, and labor and employment related claims, including complaints of alleged wrongful termination and potential class action lawsuits regarding alleged violations of federal and state wage and hour and other laws. In general, legal proceedings and claims, regardless of their merit, and associated internal investigations (especially those relating to intellectual property or confidential information disputes) are often expensive to prosecute, defend or conduct and may divert management’s attention and other company resources. Moreover, the results of legal proceedings are difficult to predict, and the costs incurred in litigation can be substantial, regardless of outcome. The Company believes the amounts provided in its condensed consolidated financial statements are adequate in light of the probable and estimated liabilities. However, because such matters are subject to many uncertainties, the ultimate outcomes are not predictable, and there can be no assurances that the actual amounts required to satisfy alleged liabilities from the matters described above will not exceed the amounts reflected in the Company’s condensed consolidated financial statements or will not have a material adverse effect on its results of operations, financial condition or cash flows.

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Commitments and Contingencies

6 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

NOTE 13 – COMMITMENTS AND CONTINGENCIES

Factoring. KLA-Tencor has agreements (referred to as “factoring agreements”) with financial institutions to sell certain of its trade receivables and promissory notes from customers without recourse. The Company does not believe it is at risk for any material losses as a result of these agreements. In addition, the Company periodically sells certain letters of credit (“LCs”), without recourse, received from customers in payment for goods and services.

The following table shows total receivables sold under factoring agreements and proceeds from sales of LCs for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Receivables sold under factoring agreements	$	47,232	$	28,242	$	79,133	$	84,975
Proceeds from sales of LCs	$	—	$	9,740	$	5,571	$	13,148

Factoring and LC fees for the sale of certain trade receivables were recorded in other expense (income), net and were not material for the periods presented.

Facilities. KLA-Tencor leases certain of its facilities under arrangements that are accounted for as operating leases. Rent expense was $2.5 million and $2.4 million for the three months ended December 31, 2017 and 2016, respectively and was $5.0 million and $4.8 million for the six months ended December 31, 2017 and 2016, respectively.

The following is a schedule of expected operating lease payments:

Fiscal year ending June 30,	Amount (In thousands)
2018 (remaining 6 months)	$	10,063
2019	7,478
2020	6,031
2021	4,561
2022	2,534
2023 and thereafter	4,551
Total minimum lease payments	$	35,218

Purchase Commitments. KLA-Tencor maintains commitments to purchase inventory from its suppliers as well as goods and services in the ordinary course of business. The Company’s liability under these purchase commitments is generally restricted to a forecasted time-horizon as mutually agreed upon between the parties. This forecasted time-horizon can vary among different suppliers. The Company’s estimate of its significant purchase commitments is approximately $481.0 million as of December 31, 2017 which are primarily due within the next 12 months. Actual expenditures will vary based upon the volume of the transactions and length of contractual service provided. In addition, the amounts paid under these arrangements may be less in the event that the arrangements are renegotiated or canceled. Certain agreements provide for potential cancellation penalties.

Cash Long-Term Incentive Plan. As of December 31, 2017, the Company had committed $120.2 million for future payment obligations under its Cash LTI Plan. The calculation of compensation expense related to the Cash LTI Plan includes estimated forfeiture rate assumptions. Cash LTI awards issued to employees under the Cash LTI Plan vest in three or four equal installments, with one-third or one-fourth of the aggregate amount of the Cash LTI award vesting on each yearly anniversary of the grant date over a three or four-year period. In order to receive payments under a Cash LTI award, participants must remain employed by the Company as of the applicable award vesting date.

Warranties, Guarantees and Contingencies. KLA-Tencor provides standard warranty coverage on its systems for 40 hours per week for 12 months, providing labor and parts necessary to repair and maintain the systems during the warranty period. The Company accounts for the estimated warranty cost as a charge to costs of revenues when revenue is recognized. The estimated warranty cost is based on historical product performance and field expenses. Utilizing actual service records, the Company calculates the average service hours and parts expense per system and applies the actual labor and overhead rates to determine the estimated warranty charge. The Company updates these estimated charges on a regular basis. The actual product performance and/or field expense profiles may differ, and in those cases the Company adjusts its warranty accruals accordingly.

The following table provides the changes in the product warranty accrual for the indicated periods:

	Three months ended December 31,						Six months ended December 31,
(In thousands)	2017			2016			2017			2016
Beginning balance	$	46,439		$	36,967		$	45,458		$	34,773
Accruals for warranties issued during the period	13,951			13,191			27,047			24,093
Changes in liability related to pre-existing warranties	(5,254		)	(1,131		)	(7,785		)	(1,576		)
Settlements made during the period	(10,123		)	(8,354		)	(19,707		)	(16,617		)
Ending balance	$	45,013		$	40,673		$	45,013		$	40,673

The Company maintains guarantee arrangements available through various financial institutions for up to $21.8 million, of which $16.0 million had been issued as of December 31, 2017, primarily to fund guarantees to customs authorities for value-added tax (“VAT”) and other operating requirements of the Company’s subsidiaries in Europe and Asia.

KLA-Tencor is a party to a variety of agreements pursuant to which it may be obligated to indemnify the other party with respect to certain matters. Typically, these obligations arise in connection with contracts and license agreements or the sale of assets, under which the Company customarily agrees to hold the other party harmless against losses arising from, or provides customers with other remedies to protect against, bodily injury or damage to personal property caused by the Company’s products, non-compliance with the Company’s product performance specifications, infringement by the Company’s products of third-party intellectual property rights and a breach of warranties, representations and covenants related to matters such as title to assets sold, validity of certain intellectual property rights, non-infringement of third-party rights, and certain income tax-related matters. In each of these circumstances, payment by the Company is typically subject to the other party making a claim to and cooperating with the Company pursuant to the procedures specified in the particular contract.

This usually allows the Company to challenge the other party’s claims or, in case of breach of intellectual property representations or covenants, to control the defense or settlement of any third-party claims brought against the other party. Further, the Company’s obligations under these agreements may be limited in terms of amounts, activity (typically at the Company’s option to replace or correct the products or terminate the agreement with a refund to the other party), and duration. In some instances, the Company may have recourse against third parties and/or insurance covering certain payments made by the Company.

Subject to certain limitations, the Company is obligated to indemnify its current and former directors, officers and employees with respect to certain litigation matters and investigations that arise in connection with their service to the Company. These obligations arise under the terms of the Company’s certificate of incorporation, its bylaws, applicable contracts, and Delaware and California law. The obligation to indemnify generally means that the Company is required to pay or reimburse the individuals’ reasonable legal expenses and possibly damages and other liabilities incurred in connection with these matters.

In addition, the Company may in limited circumstances enter into agreements that contain customer-specific commitments on pricing, tool reliability, spare parts stocking levels, response time and other commitments. Furthermore, the Company may give these customers limited audit or inspection rights to enable them to confirm that the Company is complying with these commitments. If a customer elects to exercise its audit or inspection rights, the Company may be required to expend significant resources to support the audit or inspection, as well as to defend or settle any dispute with a customer that could potentially arise out of such audit or inspection. To date, the Company has made no significant accruals in its condensed consolidated financial statements for this contingency. While the Company has not in the past incurred significant expenses for resolving disputes regarding these types of commitments, the Company cannot make any assurance that it will not incur any such liabilities in the future.

It is not possible to predict the maximum potential amount of future payments under these or similar agreements due to the conditional nature of the Company’s obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material effect on its business, financial condition, results of operations or cash flows.

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Derivative Instruments and Hedging Activities

6 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

NOTE 14 – DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

The authoritative guidance requires companies to recognize all derivative instruments and hedging activities, including foreign currency exchange contracts, as either assets or liabilities at fair value on the balance sheet. Changes in the fair value of derivatives that do not qualify for hedge treatment, as well as the ineffective portion of any hedges, are recognized in other expense (income), net in the condensed consolidated statements of operations. In accordance with the guidance, the Company designates foreign currency forward exchange and option contracts as cash flow hedges of certain forecasted foreign currency denominated sales and purchase transactions.

KLA-Tencor’s foreign subsidiaries operate and sell KLA-Tencor’s products in various global markets. As a result, KLA-Tencor is exposed to risks relating to changes in foreign currency exchange rates. KLA-Tencor utilizes foreign currency forward exchange contracts and option contracts to hedge against future movements in foreign exchange rates that affect certain existing and forecasted foreign currency denominated sales and purchase transactions, such as the Japanese yen, the euro, the New Taiwan dollar and the Israeli new shekel. The Company routinely hedges its exposures to certain foreign currencies with various financial institutions in an effort to minimize the impact of certain currency exchange rate fluctuations. These currency forward exchange contracts and options, designated as cash flow hedges, generally have maturities of less than 18 months. Cash flow hedges are evaluated for effectiveness monthly, based on changes in total fair value of the derivatives. If a financial counterparty to any of the Company’s hedging arrangements experiences financial difficulties or is otherwise unable to honor the terms of the foreign currency hedge, the Company may experience material losses.

For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gains or losses on the derivative is reported as a component of accumulated other comprehensive income (loss) (“OCI”) and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Changes in the fair value of currency forward exchange and option contracts due to changes in time value are excluded from the assessment of effectiveness. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings.

For derivative instruments that are not designated as accounting hedges, gains and losses are recognized in other expense (income), net. The Company uses foreign currency forward contracts to hedge certain foreign currency denominated assets or liabilities. The gains and losses on these derivatives are largely offset by the changes in the fair value of the assets or liabilities being hedged.

In October 2014, in anticipation of the issuance of the Senior Notes, the Company entered into a series of forward contracts (“Rate Lock Agreements”) to lock the benchmark rate on a portion of the Senior Notes. The objective of the Rate Lock Agreements was to hedge the risk associated with the variability in interest rates due to the changes in the benchmark rate leading up to the closing of the intended financing, on the notional amount being hedged. The Rate Lock Agreements had a notional amount of $1.00 billion in aggregate which matured in the second quarter of the fiscal year ended June 30, 2015. The Rate Lock Agreements were terminated on the date of pricing of the $1.25 billion of 4.650% Senior Notes due in 2024 and the Company recorded the fair value of $7.5 million as a gain within accumulated other comprehensive income (loss) as of December 31, 2014. The Company recognized $0.2 million for each of the three months ended December 31, 2017 and 2016 and $0.4 million for each of the six months ended December 31, 2017 and 2016 for the amortization of the gain recognized in accumulated other comprehensive income (loss), which amount reduced the interest expense. As of December 31, 2017, the unamortized portion of the fair value of the forward contracts for the rate lock agreements was $5.2 million.

Derivatives in Cash Flow Hedging Relationships: Foreign Exchange and Interest Rate Contracts

The locations and amounts of designated and non-designated derivative instruments’ gains and losses reported in the condensed consolidated financial statements for the indicated periods were as follows:

		Three months ended December 31,						Six months ended December 31,
(In thousands)	Location in Financial Statements	2017			2016			2017			2016
Derivatives Designated as Hedging Instruments
Gains (losses) in accumulated OCI on derivatives (effective portion)	Accumulated OCI	$	697		$	13,969		$	1,141		$	12,131
Gains (losses) reclassified from accumulated OCI into income (effective portion):	Revenues	$	397		$	(1,425	)	$	1,365		$	(2,906	)
	Costs of revenues	377			(69		)	1,338			(156		)
	Interest expense	189			189			378			378
	Net gains (losses) reclassified from accumulated OCI into income (effective portion)	$	963		$	(1,305	)	$	3,081		$	(2,684	)
Gains (losses) recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	Other expense (income), net	$	(158	)	$	(1,442	)	$	(229	)	$	(1,453	)
Derivatives Not Designated as Hedging Instruments
Gains (losses) recognized in income	Other expense (income), net	$	3,237		$	5,295		$	3,676		$	5,131

The U.S. dollar equivalent of all outstanding notional amounts of hedge contracts, with maximum remaining maturities of approximately 13 months as of December 31, 2017 and ten months June 30, 2017, respectively, were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Cash flow hedge contracts
Purchase	$	25,923	$	19,305
Sell	$	85,466	$	128,672
Other foreign currency hedge contracts
Purchase	$	144,442	$	165,563
Sell	$	155,260	$	118,504

The locations and fair value amounts of the Company’s derivative instruments reported in its Condensed Consolidated Balance Sheets as of the dates indicated below were as follows:

	Asset Derivatives					Liability Derivatives
	Balance Sheet  Location	As of December 31, 2017		As of June 30, 2017		Balance Sheet  Location	As of December 31, 2017		As of June 30, 2017
(In thousands)		Fair Value					Fair Value
Derivatives designated as hedging instruments
Foreign exchange contracts	Other current assets	$	1,271	$	2,198	Other current liabilities	$	126	$	72
Total derivatives designated as hedging instruments		$	1,271	$	2,198		$	126	$	72
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other current assets	$	3,203	$	3,733	Other current liabilities	$	289	$	1,203
Total derivatives not designated as hedging instruments		$	3,203	$	3,733		$	289	$	1,203
Total derivatives		$	4,474	$	5,931		$	415	$	1,275

The following table provides the balances and changes in accumulated OCI, before taxes, related to derivative instruments for the indicated periods:

	Three months ended December 31,					Six months ended December 31,
(In thousands)	2017			2016		2017			2016
Beginning balance	$	6,452		$	751	$	8,126		$	1,210
Amount reclassified to income	(963		)	1,305		(3,081		)	2,684
Net change in unrealized gains or losses	697			13,969		1,141			12,131
Ending balance	$	6,186		$	16,025	$	6,186		$	16,025

Offsetting of Derivative Assets and Liabilities

KLA-Tencor presents derivatives at gross fair values in the Condensed Consolidated Balance Sheets. The Company has entered into arrangements with each of its counterparties, which reduce credit risk by permitting net settlement of transactions with the same counterparty under certain conditions. As of December 31, 2017 and June 30, 2017, information related to the offsetting arrangements was as follows (in thousands):

As of December 31, 2017									Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
Description	Gross Amounts of Derivatives			Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets		Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets			Financial Instruments			Cash Collateral Received		Net Amount
Derivatives - Assets	$	4,474		$	—	$	4,474		$	(415	)	$	—	$	4,059
Derivatives - Liabilities	$	(415	)	$	—	$	(415	)	$	415		$	—	$	—

As of June 30, 2017									Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
Description	Gross Amounts of Derivatives			Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets		Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets			Financial Instruments			Cash Collateral Received		Net Amount
Derivatives - Assets	$	5,931		$	—	$	5,931		$	(1,275	)	$	—	$	4,656
Derivatives - Liabilities	$	(1,275	)	$	—	$	(1,275	)	$	1,275		$	—	$	—

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Related Party Transactions

6 Months Ended

Dec. 31, 2017

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS

NOTE 15 – RELATED PARTY TRANSACTIONS

During the three and six months ended December 31, 2017 and 2016, the Company purchased from, or sold to, several entities, where one or more executive officers of the Company or members of the Company’s Board of Directors, or their immediate family members, were, during the periods presented, an executive officer or a board member of a subsidiary, including Citrix Systems, Inc., Integrated Device Technology, Inc., Keysight Technologies, Inc., MetLife Insurance K.K., NetApp, Inc., and Proofpoint, Inc. The following table provides the transactions with these parties for the indicated periods (for the portion of such period that they were considered related):

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Total revenues	$	455	$	8	$	457	$	8
Total purchases	$	542	$	226	$	1,246	$	583

The Company’s receivable balances from these parties were $0.5 million as of December 31, 2017 and immaterial as of June 30, 2017. The Company’s payable balance from these parties was immaterial at December 31, 2017 and June 30, 2017. Management believes that such transactions are at arm’s length and on similar terms as would have been obtained from unaffiliated third parties.

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Segment Reporting and Geographic Information

6 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION

NOTE 16 – SEGMENT REPORTING AND GEOGRAPHIC INFORMATION

KLA-Tencor reports one reportable segment in accordance with the provisions of the authoritative guidance for segment reporting. Operating segments are defined as components of an enterprise about which separate financial information is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. KLA-Tencor’s chief operating decision maker is its Chief Executive Officer. The Company is engaged primarily in designing, manufacturing, and marketing process control and yield management solutions for the semiconductor and related nanoelectronics industries.

All operating segments have been aggregated due to their inter-dependencies, commonality of long-term economic characteristics, products and services, the production processes, class of customer and distribution processes. The Company’s service products are an extension of the system product portfolio and provide customers with spare parts and fab management services (including system preventive maintenance and optimization services) to improve yield, increase production uptime and throughput, and lower the cost of ownership. Since the Company operates in one reportable segment, all financial segment information required by the authoritative guidance can be found in the condensed consolidated financial statements.

The Company’s significant operations outside the United States include manufacturing facilities in China, Germany, Israel and Singapore and sales, marketing and service offices in Japan, the rest of the Asia Pacific region and Europe. For geographical revenue reporting, revenues are attributed to the geographic location in which the customer is located. Long-lived assets consist of land, property and equipment, net and are attributed to the geographic region in which they are located.

The following is a summary of revenues by geographic region, based on ship-to location, for the indicated periods (as a percentage of total revenues):

	Three months ended December 31,								Six months ended December 31,
(Dollar amounts in thousands)	2017				2016				2017				2016
Revenues:
Korea	$	270,184	28	%	$	96,846	11	%	$	544,862	28	%	$	231,935	14	%
Taiwan	216,791		22	%	336,058		38	%	355,350		18	%	609,750		37	%
Japan	154,762		16	%	67,855		8	%	301,197		15	%	172,639		11	%
North America	149,042		15	%	153,162		17	%	278,292		14	%	240,428		15	%
Europe & Israel	82,158		8	%	93,440		11	%	165,663		9	%	128,288		8	%
China	66,460		7	%	73,152		9	%	234,799		12	%	158,841		10	%
Rest of Asia	36,425		4	%	56,372		6	%	65,240		4	%	85,677		5	%
Total	$	975,822	100	%	$	876,885	100	%	$	1,945,403	100	%	$	1,627,558	100	%

The following is a summary of revenues by major products for the indicated periods (as a percentage of total revenues):

	Three months ended December 31,								Six months ended December 31,
(Dollar amounts in thousands)	2017				2016				2017				2016
Revenues:
Wafer Inspection	$	400,584	41	%	$	428,875	49	%	$	790,004	41	%	$	784,736	48	%
Patterning	274,868		28	%	223,796		26	%	569,218		29	%	396,409		24	%
Global Service and Support(1)	273,805		28	%	217,249		24	%	534,303		27	%	425,235		26	%
Other	26,565		3	%	6,965		1	%	51,878		3	%	21,178		2	%
Total	$	975,822	100	%	$	876,885	100	%	$	1,945,403	100	%	$	1,627,558	100	%

__________________ 

(1) The Global Service and Support revenues includes service revenues as presented in the condensed consolidated statements of operations as well as certain product revenues, primarily revenues from the Company’s K-T Pro business.

In the three months ended December 31, 2017, one customer accounted for approximately 17% of total revenues. In the three months ended December 31, 2016, two customers accounted for approximately 31% and 13% of total revenues. In the six months ended December 31, 2017, one customer accounted for approximately 22% of total revenues. In the six months ended December 31, 2016, two customers accounted for approximately 30% and 11% of total revenues. Two customers on an individual basis accounted for greater than 10% of net accounts receivables as of December 31, 2017 and June 30, 2017, respectively.

Long-lived assets by geographic region as of the dates indicated below were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Long-lived assets:
United States	$	186,104	$	191,096
Singapore	41,924		39,118
Israel	28,658		30,182
Europe	13,335		13,300
Rest of Asia	11,613		10,279
Total	$	281,634	$	283,975

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Basis of Presentation (Policies)

6 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

The condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the unaudited interim financial statements reflect all adjustments (consisting only of normal, recurring adjustments) necessary for a fair statement of the financial position, results of operations, comprehensive income (loss), and cash flows for the periods indicated. These financial statements and notes, however, should be read in conjunction with Item 8, “Financial Statements and Supplementary Data” included in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2017, filed with the SEC on August 4, 2017.

The condensed consolidated financial statements include the accounts of KLA-Tencor and its majority-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.

The results of operations for the three and six months ended December 31, 2017 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year ending June 30, 2018.

Certain reclassifications have been made to the prior year’s Condensed Consolidated Balance Sheet and notes to conform to the current year presentation. The reclassifications had no effect on the prior year’s Condensed Consolidated Statements of Operations, Comprehensive Income (Loss) and Cash Flows.

Management Estimates

The preparation of the condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions in applying the Company’s accounting policies that affect the reported amounts of assets and liabilities (and related disclosure of contingent assets and liabilities) at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

Revenue Recognition

The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectibility is reasonably assured. The Company derives revenue from three sources—sales of systems, spare parts and services. In general, the Company recognizes revenue for systems when the system has been installed, is operating according to predetermined specifications and is accepted by the customer. When the Company has demonstrated a history of successful installation and acceptance, the Company recognizes revenue upon delivery and customer acceptance. Under certain circumstances, however, the Company recognizes revenue prior to acceptance from the customer, as follows:

• When the customer fab has previously accepted the same tool, with the same specifications, and when the Company can objectively demonstrate that the tool meets all of the required acceptance criteria.

• When system sales to independent distributors have no installation requirement, contain no acceptance agreement, and 100% of the payment is due based upon shipment.

• When the installation of the system is deemed perfunctory.

• When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as intended and meets predetermined specifications.

In circumstances in which the Company recognizes revenue prior to installation, the portion of revenue associated with installation is deferred based on estimated fair value, and that revenue is recognized upon completion of the installation.

In many instances, products are sold in stand-alone arrangements. Services are sold separately through renewals of annual maintenance contracts. The Company has multiple element revenue arrangements in cases where certain elements of a sales arrangement are not delivered and accepted in one reporting period. To determine the relative fair value of each element in a revenue arrangement, the Company allocates arrangement consideration based on the selling price hierarchy. For substantially all of the arrangements with multiple deliverables pertaining to products and services, the Company uses vendor-specific objective evidence (“VSOE”) or third-party evidence (“TPE”) to allocate the selling price to each deliverable. The Company determines TPE based on historical prices charged for products and services when sold on a stand-alone basis. When the Company is unable to establish relative selling price using VSOE or TPE, the Company uses estimated selling price (“ESP”) in its allocation of arrangement consideration. The objective of ESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. ESP could potentially be used for new or customized products. The Company regularly reviews relative selling prices and maintains internal controls over the establishment and updates of these estimates.

In a multiple element revenue arrangement, the Company defers revenue recognition associated with the relative fair value of each undelivered element until that element is delivered to the customer. To be considered a separate element, the product or service in question must represent a separate unit of accounting, which means that such product or service must fulfill the following criteria: (a) the delivered item(s) has value to the customer on a stand-alone basis; and (b) if the arrangement includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in the control of the Company. If the arrangement does not meet all the above criteria, the entire amount of the sales contract is deferred until all elements are accepted by the customer.

Trade-in rights are occasionally granted to customers to trade in tools in connection with subsequent purchases. The Company estimates the value of the trade-in right and reduces the revenue recognized on the initial sale. This amount is recognized at the earlier of the exercise of the trade-in right or the expiration of the trade-in right.

The Company enters into volume purchase agreements with some of its customers. The Company accrues the estimated credits earned by its customers for such incentives, and in situations when the credit levels vary depending upon sales volume, the Company updates its accrual based on the amount that the Company estimates will be purchased pursuant to the volume purchase agreements. Accruals for customer credits are recorded as an offset to revenue or deferred revenue.

 Spare parts revenue is recognized when the parts have been shipped, risk of loss has passed to the customer and collection of the resulting receivable is reasonably assured.

Service and maintenance contract revenue is recognized ratably over the term of the maintenance contract. Revenue from services performed in the absence of a maintenance contract, including consulting and training revenue, is recognized when the related services are performed and collectibility is reasonably assured.

The Company sells stand-alone software that is subject to software revenue recognition guidance. The Company periodically reviews selling prices to determine whether VSOE exists, and in situations where the Company is unable to establish VSOE for undelivered elements such as post-contract service, revenue is recognized ratably over the term of the service contract.

The Company also defers the fair value of non-standard warranty bundled with equipment sales as unearned revenue. Non-standard warranty includes services incremental to the standard 40-hour per week coverage for 12 months. Non-standard warranty is recognized ratably as revenue when the applicable warranty term period commences.

The deferred system profit balance equals the value of products that have been shipped and billed to customers which have not met the Company’s revenue recognition criteria, less applicable product and warranty costs. Deferred system profit does not include the profit associated with product shipments to certain customers in Japan, to whom title does not transfer until customer acceptance. Shipments to such customers in Japan are classified as inventory at cost until the time of acceptance.

Recent Accounting Pronouncements

Recently Adopted

In July 2015, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update for the subsequent measurement of inventory. The amended guidance requires entities to measure inventory at the lower of cost or net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The requirement would replace the current lower of cost or market evaluation and the accounting guidance is unchanged for inventory measured using last-in, first-out (“LIFO”) or the retail inventory method. The Company adopted this update beginning in the first quarter of its fiscal year ending June 30, 2018 on a prospective basis and there was no impact of adoption on its condensed consolidated financial statements.

Updates Not Yet Effective

In May 2014, the FASB issued an accounting standard update regarding revenue from customer contracts to transfer goods and services or non-financial assets unless the contracts are covered by other standards (for example, insurance or lease contracts). Under the new guidance, an entity should recognize revenue in connection with the transfer of promised goods or services to customers in an amount that reflects the consideration that the entity expects to be entitled to receive in exchange for those goods or services. In addition, the new standard requires that reporting companies disclose the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The new standard may be applied retrospectively to each prior period presented (“full retrospective transition method”) or retrospectively with the cumulative effect recognized as of the date of adoption (“modified retrospective transition method”). The FASB has also issued several amendments to the standard since its initial issuance. The Company intends to adopt the new standard in the first quarter of its fiscal year ending June 30, 2019 and elected a modified retrospective transition method to be applied to completed and incomplete contracts as of the adoption date.

To address the significant implementation requirements of the accounting standard update, the Company has established a revenue project steering committee and cross-functional implementation team for the implementation of the standard, including a review of all significant revenue arrangements to identify any differences in the timing, measurement, presentation of revenue recognition including new disclosure requirements.

The Company has completed its preliminary assessment of the potential impact that the implementation of this new standard will have on its consolidated financial statements and believes the most significant impact may include the following:

• The Company will account for the standard 12-month warranty for a majority of its products that is not separately paid for by the customers as a performance obligation since the Company provides for necessary repairs as well as preventive maintenance services for such products. The estimated fair value of the service will be deferred and recognized ratably as revenue over the warranty period.

• The Company will generally recognize revenue for its products at a point of time based on judgment of whether or not the Company has satisfied its performance obligation by transferring control of the product to the customer. In evaluating whether or not control has been transferred to the customer, the Company will consider whether or not certain indicators have been met. Not all of the indicators need to be met for the Company to conclude that control has transferred to the customer. The Company will be required to use significant judgment to evaluate whether or not the factors indicate that the customer has obtained control of the product and the following factors will be considered in evaluating whether or not control has transferred to the customer: the Company has a present right to payment; the customer has legal title; the customer has physical possession; the customer has significant risk and rewards of ownership; and the customer has accepted the product, or whether customer acceptance is considered a formality based on history of acceptance of similar products.

• The Company will recognize revenue for software licenses at the time of delivery since the VSOE requirement for undelivered element such as post-contract support is eliminated and companies are allowed to use established or best estimate selling price for the undelivered element to allocate and defer the revenue. As a result, the Company will recognize as revenue a portion of the sales price upon delivery of the software, compared to the current practice of recognizing the entire sales price ratably over the term of the service contract due to the lack of VSOE.

The Company will continue to assess the impact of the new standard, including potential changes to the accounting policies, business processes, systems and internal controls over financial reporting and its preliminary assessment of the impact is subject to change.

In January 2016, the FASB issued an accounting standard update that changes the accounting for financial instruments primarily related to equity investments (other than those accounted for under the equity method of accounting or those that result in consolidation of the investee), financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The accounting standard update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In February 2016, the FASB issued an accounting standard update which amends the existing accounting standards for leases. Consistent with current guidance, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification. Under the new guidance, a lessee will be required to recognize assets and liabilities for all leases with lease terms of more than 12 months. The update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2020 using a modified retrospective transition method. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In June 2016, the FASB issued an accounting standard update that changes the accounting for recognizing impairments of financial assets. Under the update, credit losses for certain types of financial instruments will be estimated based on expected losses. The update also modifies the impairment models for available-for-sale debt securities and for purchased financial assets with credit deterioration since their origination. The update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2021, with early adoption permitted starting in the first quarter of fiscal year ending June 30, 2020. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In October 2016, the FASB issued an accounting standard update to recognize the income tax consequences of intra-entity transfers of assets other than inventory when they occur. This eliminates the exception to postpone recognition until the asset has been sold to an outside party. This standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019, and early adoption is permitted. It is required to be applied on a modified retrospective basis through a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In January 2017, the FASB issued an accounting standard update to simplify the subsequent measurement of goodwill by removing the second step of the two-step impairment test, which requires an entity to determine the fair value of assets and liabilities similar to what is required in a purchase price allocation. Under the update, goodwill impairment will be calculated as the amount by which a reporting unit’s carrying value exceeds its fair value. This standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2021 and requires a prospective approach to adoption. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In January 2017, the FASB issued an accounting standard on clarifying the definition of a business, with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The standard is effective for the Company for its fiscal year ending June 30, 2019.  The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. 

In March 2017, the FASB issued an accounting standard update that changes the statements of operation classification of net periodic benefit cost related to defined benefit pension and/or other postretirement benefit plans. Under the update, employers will present the service cost component of net periodic benefit cost in the same statements of operations line item(s) as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit costs separately from the line item(s) that includes the service cost and outside of any subtotal of operating income, if one is presented. The standard is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2019 and early adoption is permitted. It is required to be applied retrospectively, except for the provision regarding capitalization in assets which is required to be applied prospectively. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

In May 2017, the FASB issued an accounting standard update regarding stock compensation that provides guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in order to reduce diversity in practice and reduce complexity.   The update is effective for the Company beginning in the first quarter of the Company’s fiscal year ending June 30, 2019 and should be applied prospectively with early adoption permitted as of the beginning of an interim or annual reporting period. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements.

In August 2017, the FASB issued an accounting standard update to hedge accounting to better align the Company’s risk management activities by refining financial and non-financial hedging strategy eligibilities. This update also amends the presentation and disclosure requirements to increase transparency to better understand an entity’s risk exposures and how hedging strategies are used to manage those exposures. This standard update is effective for the Company beginning in the first quarter of its fiscal year ending June 30, 2020, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its condensed consolidated financial statements.

Fair Value Measurement

The Company’s financial assets and liabilities are measured and recorded at fair value, except for its debt and certain equity investments in privately-held companies. These equity investments are generally accounted for under the cost method of accounting and are periodically assessed for other-than-temporary impairment when an event or circumstance indicates that an other-than-temporary decline in value may have occurred. The Company’s non-financial assets, such as goodwill, intangible assets, and land, property and equipment, are recorded at cost and are assessed for impairment when an event or circumstance indicates that an other-than-temporary decline in value may have occurred.

Fair Value of Financial Instruments

KLA-Tencor has evaluated the estimated fair value of financial instruments using available market information and valuations as provided by third-party sources. The use of different market assumptions and/or estimation methodologies could have a significant effect on the estimated fair value amounts. The fair value of the Company’s cash equivalents, accounts receivable, accounts payable and other current assets and liabilities approximate their carrying amounts due to the relatively short maturity of these items.

Warranties, Guarantees and Contingencies

KLA-Tencor provides standard warranty coverage on its systems for 40 hours per week for 12 months, providing labor and parts necessary to repair and maintain the systems during the warranty period. The Company accounts for the estimated warranty cost as a charge to costs of revenues when revenue is recognized. The estimated warranty cost is based on historical product performance and field expenses. Utilizing actual service records, the Company calculates the average service hours and parts expense per system and applies the actual labor and overhead rates to determine the estimated warranty charge. The Company updates these estimated charges on a regular basis. The actual product performance and/or field expense profiles may differ, and in those cases the Company adjusts its warranty accruals accordingly.

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Fair Value Measurements (Tables)

6 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

Financial assets (excluding cash held in operating accounts and time deposits) and liabilities measured at fair value on a recurring basis, as of the date indicated below, were presented on the Company’s Condensed Consolidated Balance Sheet as follows:

As of December 31, 2017 (In thousands)	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents:
Money market funds and other	$	569,287		$	569,287	$	—
U.S. Treasury securities	3,745			—		3,745
Marketable securities:
Corporate debt securities	914,358			—		914,358
Sovereign securities	11,427			—		11,427
U.S. Treasury securities	404,983			394,486		10,497
U.S. Government agency securities	339,730			339,730		—
Total cash equivalents and marketable securities(1)	2,243,530			1,303,503		940,027
Other current assets:
Derivative assets	4,474			—		4,474
Other non-current assets:
Executive Deferred Savings Plan	192,169			142,809		49,360
Total financial assets(1)	$	2,440,173		$	1,446,312	$	993,861
Liabilities
Other current liabilities:
Derivative liabilities	$	(415	)	$	—	$	(415	)
Total financial liabilities	$	(415	)	$	—	$	(415	)

________________

(1) Excludes cash of $481.1 million held in operating accounts and time deposits of $33.6 million as of December 31, 2017.

Financial assets (excluding cash held in operating accounts and time deposits) and liabilities measured at fair value on a recurring basis, as of the date indicated below, were presented on the Company’s Condensed Consolidated Balance Sheet as follows:

As of June 30, 2017 (In thousands)	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents:
Corporate debt securities	$	76,472		$	—	$	76,472
Money market funds and other	616,039			616,039		—
U.S. Government agency securities	117,417			—		117,417
Sovereign securities	10,050			—		10,050
Marketable securities:
Corporate debt securities	1,042,723			—		1,042,723
Sovereign securities	42,515			—		42,515
U.S. Government agency securities	391,409			368,121		23,288
U.S. Treasury securities	373,299			373,299		—
Total cash equivalents and marketable securities(1)	2,669,924			1,357,459		1,312,465
Other current assets:
Derivative assets	5,931			—		5,931
Other non-current assets:
Executive Deferred Savings Plan	182,150			136,145		46,005
Total financial assets(1)	$	2,858,005		$	1,493,604	$	1,364,401
Liabilities
Other current liabilities:
Derivative liabilities	$	(1,275	)	$	—	$	(1,275	)
Total financial liabilities	$	(1,275	)	$	—	$	(1,275	)

________________

(1) Excludes cash of $307.4 million held in operating accounts and time deposits of $39.4 million as of June 30, 2017.

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Financial Statement Components (Tables)

6 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Components

Balance Sheet Components

(In thousands)	As of December 31, 2017			As of June 30, 2017
Accounts receivable, net:
Accounts receivable, gross	$	752,618		$	592,753
Allowance for doubtful accounts	(11,715		)	(21,636		)
	$	740,903		$	571,117
Inventories:
Customer service parts	$	248,937		$	245,172
Raw materials	248,475			240,389
Work-in-process	237,261			193,026
Finished goods	53,298			54,401
	$	787,971		$	732,988
Other current assets:
Prepaid expenses	$	46,451		$	36,146
Other current assets	11,512			13,004
Income tax related receivables	8,966			22,071
	$	66,929		$	71,221
Land, property and equipment, net:
Land	$	40,620		$	40,617
Buildings and leasehold improvements	323,143			319,306
Machinery and equipment	568,203			551,277
Office furniture and fixtures	21,909			21,328
Construction-in-process	7,214			4,597
	961,089			937,125
Less: accumulated depreciation and amortization	(679,455		)	(653,150		)
	$	281,634		$	283,975
Other non-current assets:
Executive Deferred Savings Plan(1)	$	192,169		$	182,150
Other non-current assets	19,146			13,526
	$	211,315		$	195,676
Other current liabilities:
Compensation and benefits	$	222,503		$	172,707
Executive Deferred Savings Plan(1)	192,849			183,603
Customer credits and advances	116,856			95,188
Other accrued expenses	86,865			116,039
Warranty	45,013			45,458
Income taxes payable	22,525			17,040
Interest payable	17,008			19,396
	$	703,619		$	649,431
Other non-current liabilities:
Income taxes payable	$	355,849		$	68,439
Pension liabilities	74,868			72,801
Other non-current liabilities	30,025			31,167
	$	460,742		$	172,407

________________

(1) KLA-Tencor has a non-qualified deferred compensation plan (known as “Executive Deferred Savings Plan”) under which certain executives and non-employee directors may defer a portion of their compensation. Participants are credited with returns based on their allocation of their account balances among measurement funds. The Company controls the investment of these funds, and the participants remain general creditors of the Company. The Company invests these funds in certain mutual funds and such investments are classified as trading securities in the condensed consolidated balance sheets. Distributions from the Executive Deferred Savings Plan commence following a participant’s retirement or termination of employment or on a specified date allowed per the Executive Deferred Savings Plan provisions, except in cases where such distributions are required to be delayed in order to avoid a prohibited distribution under Internal Revenue Code Section 409A. Participants can generally elect the distributions to be paid in lump sum or quarterly cash payments over a scheduled period for up to 15 years and are allowed to make subsequent changes to their existing elections as permissible under the Executive Deferred Savings Plan provisions. Changes in the Executive Deferred Savings Plan liability are recorded in selling, general and administrative expense in the condensed consolidated statements of operations. The expense associated with changes in the liability included in selling, general and administrative expense was $7.0 million and $1.2 million during the three months ended December 31, 2017 and 2016, respectively and $13.8 million and $7.0 million during the six months ended December 31, 2017 and 2016. Changes in the Executive Deferred Savings Plan assets are recorded as gains (losses), net in selling, general and administrative expense in the condensed consolidated statements of operations. The amount of net gains included in selling, general and administrative expense was $7.0 million and $0.8 million during the three months ended December 31, 2017 and 2016, respectively and $13.9 million and $6.7 million during the six months ended December 31, 2017 and 2016, respectively.

Components of Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income (loss) (“OCI”) as of the dates indicated below were as follows:

(In thousands)	Currency Translation Adjustments			Unrealized Gains (Losses) on Available-for-Sale Securities			Unrealized Gains (Losses) on Cash Flow Hedges		Unrealized Gains (Losses) on Defined Benefit Plans			Total
Balance as of December 31, 2017	$	(26,614	)	$	(7,751	)	$	3,957	$	(22,114	)	$	(52,522	)
Balance as of June 30, 2017	$	(30,654	)	$	(3,869	)	$	5,221	$	(22,021	)	$	(51,323	)

Reclassification out of Accumulated Other Comprehensive Income

The effects on net income (loss) of amounts reclassified from accumulated OCI to the Condensed Consolidated Statement of Operations for the indicated period were as follows (in thousands):

	Location in the Condensed Consolidated	Three months ended December 31,						Six months ended December 31,
Accumulated OCI Components	Statements of Operations	2017			2016			2017			2016
Unrealized gains (losses) on cash flow hedges from foreign exchange and interest rate contracts	Revenues	$	397		$	(1,425	)	$	1,365		$	(2,906	)
	Costs of revenues	377			(69		)	1,338			(156		)
	Interest expense	189			189			378			378
	Net gains (losses) reclassified from accumulated OCI	$	963		$	(1,305	)	$	3,081		$	(2,684	)
Unrealized gains (losses) on available-for-sale securities	Other expense (income), net	$	(69	)	$	30		$	(63	)	$	234

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Marketable Securities (Tables)

6 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Summary of Marketable Securities

The amortized cost and fair value of marketable securities as of the dates indicated below were as follows:

As of December 31, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	918,399	$	204	$	(4,245	)	$	914,358
Money market funds and other	569,287		—		—			569,287
Sovereign securities	11,496		—		(69		)	11,427
U.S. Government agency securities	342,325		16		(2,611		)	339,730
U.S. Treasury securities	411,669		—		(2,941		)	408,728
Subtotal	2,253,176		220		(9,866		)	2,243,530
Add: Time deposits(1)	33,581		—		—			33,581
Less: Cash equivalents	592,315		—		—			592,315
Marketable securities	$	1,694,442	$	220	$	(9,866	)	$	1,684,796

As of June 30, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	1,120,548	$	598	$	(1,951	)	$	1,119,195
Money market funds and other	616,039		—		—			616,039
Sovereign securities	52,621		—		(56		)	52,565
U.S. Government agency securities	510,553		62		(1,789		)	508,826
U.S. Treasury securities	374,676		52		(1,429		)	373,299
Subtotal	2,674,437		712		(5,225		)	2,669,924
Add: Time deposits(1)	39,389		—		—			39,389
Less: Cash equivalents	845,639		—		(15		)	845,624
Marketable securities	$	1,868,187	$	712	$	(5,210	)	$	1,863,689

________________

(1) Time deposits excluded from fair value measurements.

Investments with Gross Unrealized Losses

The following table summarizes the fair value and gross unrealized losses of the Company’s investments that were in an unrealized loss position as of the date indicated below:

As of December 31, 2017 (In thousands)	Fair Value		Gross Unrealized Losses(1)
Corporate debt securities	$	792,436	$	(4,245	)
U.S. Treasury securities	404,982		(2,941		)
U.S. Government agency securities	334,064		(2,611		)
Sovereign securities	11,427		(69		)
Total	$	1,542,909	$	(9,866	)

__________________ 

(1) As of December 31, 2017, the amount of total gross unrealized losses related to investments that had been in a continuous loss position for 12 months or more was $5.3 million.

Contractual Maturities of Securities

The contractual maturities of securities classified as available-for-sale, regardless of their classification on the Company’s Condensed Consolidated Balance Sheet, as of the date indicated below were as follows:

As of December 31, 2017 (In thousands)	Amortized Cost		Fair Value
Due within one year	$	521,930	$	520,623
Due after one year through three years	1,172,512		1,164,173
	$	1,694,442	$	1,684,796

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Business Combination (Tables)

6 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table represents the preliminary purchase price allocation and summarizes the aggregate estimated fair value of the net assets acquired, including a post-closing working capital adjustment:

(In thousands)	Preliminary Purchase Price Allocation
Intangible assets	$	17,660
Goodwill	14,764
Assets acquired (including cash and marketable securities of $3.2 million)	5,981
Liabilities assumed	(1,334		)
Fair value of net assets acquired	$	37,071

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Goodwill and Purchased Intangible Assets (Tables)

6 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill Balances

The following table presents goodwill balances and the movements by reporting unit during the six months ended December 31, 2017:

(In thousands)	Wafer Inspection		Patterning		GSS		Others		Total
Balance as of June 30, 2017	$	281,095	$	53,255	$	2,856	$	12,320	$	349,526
Foreign currency and other adjustments	13		—		97		387		497
Balance as of December 31, 2017	$	281,108	$	53,255	$	2,953	$	12,707	$	350,023

Components of Purchased Intangible Assets

The components of purchased intangible assets as of the dates indicated below were as follows:

(In thousands)		As of December 31, 2017						As of June 30, 2017
Category	Range of Useful Lives	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Amount		Gross Carrying Amount		Accumulated Amortization and Impairment		Net Amount
Existing technology	4-7 years	$	157,259	$	142,459	$	14,800	$	157,259	$	140,346	$	16,913
Trade name/Trademark	7 years	20,993		19,981		1,012		20,993		19,902		1,091
Customer relationships	7-8 years	55,680		55,036		644		55,680		54,959		721
Backlog	<1 year	260		153		107		260		22		238
Total		$	234,192	$	217,629	$	16,563	$	234,192	$	215,229	$	18,963

Remaining Estimated Amortization Expense

Based on the intangible assets recorded as of December 31, 2017, and assuming no subsequent additions to, or impairment of, the underlying assets, the remaining estimated amortization expense is expected to be as follows:

Fiscal year ending June 30:	Amortization (In thousands)
2018 (remaining 6 months)	$	1,851
2019	2,486
2020	2,486
2021	2,486
2022	2,486
Thereafter	4,768
Total	$	16,563

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Debt (Tables)

6 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the debt of the Company as of December 31, 2017 and June 30, 2017:

	As of December 31, 2017					As of June 30, 2017
	Amount (In thousands)			Effective Interest Rate		Amount (In thousands)			Effective Interest Rate
Fixed-rate 2.375% Senior notes due on November 1, 2017	$	—		—	%	$	250,000		2.396	%
Fixed-rate 3.375% Senior notes due on November 1, 2019	250,000			3.377	%	250,000			3.377	%
Fixed-rate 4.125% Senior notes due on November 1, 2021	500,000			4.128	%	500,000			4.128	%
Fixed-rate 4.650% Senior notes due on November 1, 2024(1)	1,250,000			4.682	%	1,250,000			4.682	%
Fixed-rate 5.650% Senior notes due on November 1, 2034	250,000			5.670	%	250,000			5.670	%
Term loans	—			—	%	446,250			2.137	%
Revolving Credit Facility	250,000			2.634	%	—			—	%
Total debt	2,500,000					2,946,250
Unamortized discount	(2,704		)			(2,901		)
Unamortized debt issuance costs	(10,870		)			(12,892		)
Total debt	$	2,486,426				$	2,930,457
Reported as:
Current portion of long-term debt	$	—				$	249,983
Long-term debt	2,486,426					2,680,474
Total debt	$	2,486,426				$	2,930,457

__________________ 

(1) The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.

Schedule of Maturities of Term Loans

As of December 31, 2017, future principal payments for the debt are summarized as follows:

Fiscal year ending June 30:	Amount (In thousands)
2018 (remaining 6 months)	$	—
2019	—
2020	250,000
2021	—
2022	500,000
Thereafter	1,750,000
Total payments	$	2,500,000

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Equity and Long-Term Incentive Compensation Plans (Tables)

6 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Combined Activity Under Equity Incentive Plans

The following table summarizes the combined activity under the Company’s equity incentive plans for the indicated periods:

(In thousands)	Available For Grant(1)
Balance as of June 30, 2017	4,710
Restricted stock units granted (2)	(665	)
Restricted stock units granted adjustment (3)	33
Restricted stock units canceled	59
Balance as of December 31, 2017	4,137

__________________ 

(1) The number of restricted stock units reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).

(2) Includes restricted stock units granted to senior management during the six months ended December 31, 2017 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units granted during the six months ended December 31, 2017, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.3 million shares for the six months ended December 31, 2017 reflects the application of the multiplier described above).

(3) Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the six months ended December 31, 2017.

Schedule of Stock-based Compensation Expense

The following table shows pre-tax stock-based compensation expense for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Stock-based compensation expense by:
Costs of revenues	$	1,656	$	1,305	$	3,072	$	2,567
Research and development	2,275		2,052		4,446		4,073
Selling, general and administrative	9,808		9,087		20,252		17,282
Total stock-based compensation expense	$	13,739	$	12,444	$	27,770	$	23,922

Schedule of Stock-based Compensation Capitalized as Inventory

The following table shows stock-based compensation capitalized as inventory as of the dates indicated below:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Inventory	$	3,039	$	2,820

Schedule of Restricted Stock Activity

The following table shows the applicable number of restricted stock units and weighted-average grant date fair value for restricted stock units granted, vested and released, withheld for taxes, and forfeited during the six months ended December 31, 2017 and restricted stock units outstanding as of December 31, 2017 and June 30, 2017:

Restricted Stock Units	Shares(1) (In thousands)		Weighted-Average Grant Date Fair Value
Outstanding restricted stock units as of June 30, 2017(2)	2,241		$	68.24
Granted(2)	333		$	91.39
Granted adjustments(3)	(17	)	$	74.26
Vested and released	(379	)	$	63.22
Withheld for taxes	(283	)	$	63.22
Forfeited	(30	)	$	66.10
Outstanding restricted stock units as of December 31, 2017(2)	1,865		$	74.13

__________________ 

(1) Share numbers reflect actual shares subject to awarded restricted stock units. As described above, under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.

(2) Includes restricted stock units granted to senior management with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units, reported at the maximum possible number of shares (0.3 million shares for the fiscal year ended June 30, 2016, 42 thousand shares for the fiscal year ended June 30, 2017 and 0.2 million shares for the six months ended December 31, 2017) that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied.

(3) Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during six months ended December 31, 2017.

Schedule of Grant Date Fair Value, Weighted Average Grant Date Fair Value, and Tax Benefits for Restricted Stock Units

The following table shows the weighted-average grant date fair value per unit for the restricted stock units granted and the restricted stock units vested and tax benefits realized by the Company in connection with vested and released restricted stock units for the indicated periods:

	Three months ended December 31,					Six months ended December 31,
(In thousands, except for weighted-average grant date fair value)	2017			2016		2017		2016
Weighted-average grant date fair value per unit	$	105.15		$	75.38	$	91.39	$	70.95
Grant date fair value of vested restricted stock units	$	5,322		$	1,843	$	41,856	$	31,051
Tax benefits (expense) realized by the Company in connection with vested and released restricted stock units	$	(1,930	)	$	765	$	16,482	$	14,694

Employee Stock Purchase Rights Valuation

The fair value of each purchase right under the ESPP was estimated on the date of grant using the Black-Scholes option valuation model and the straight-line attribution approach with the following weighted-average assumptions:

	Three months ended December 31,				Six months ended December 31,
	2017		2016		2017		2016
Stock purchase plan:
Expected stock price volatility	25.9	%	20.6	%	25.9	%	20.6	%
Risk-free interest rate	0.9	%	0.4	%	0.9	%	0.4	%
Dividend yield	2.6	%	3.0	%	2.6	%	3.0	%
Expected life (in years)	0.5		0.5		0.5		0.5

Schedule of Tax Benefits Realized and Weighted-average fair value for the ESPP

The following table shows the tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP and the weighted-average fair value per share for the indicated periods:

(In thousands, except for weighted-average fair value per share)	Three months ended December 31,				Six months ended December 31,
	2017		2016		2017		2016
Total cash received from employees for the issuance of shares under the ESPP	$	20,579	$	23,694	$	20,579	$	23,694
Number of shares purchased by employees through the ESPP	264		384		264		384
Tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP	$	47	$	218	$	894	$	922
Weighted-average fair value per share based on Black-Scholes model	$	19.04	$	14.05	$	19.04	$	14.05

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Stock Repurchase Program (Tables)

6 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of Share Repurchases

Share repurchases for the indicated periods (based on the trade date of the applicable repurchase) were as follows:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Number of shares of common stock repurchased	388		—		822		—
Total cost of repurchases	$	40,868	$	—	$	81,643	$	—

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Net Income (Loss) Per Share (Tables)

6 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income (Loss) Per Share

The following table sets forth the computation of basic and diluted net income (loss) per share:

(In thousands, except per share amounts)	Three months ended December 31,					Six months ended December 31,
	2017			2016		2017		2016
Numerator:
Net income (loss)	$	(134,319	)	$	238,251	$	146,617	$	416,352
Denominator:
Weighted-average shares-basic, excluding unvested restricted stock units	156,587			156,335		156,707		156,232
Effect of dilutive restricted stock units and options(1)	—			788		981		839
Weighted-average shares-diluted	156,587			157,123		157,688		157,071
Basic net income (loss) per share	$	(0.86	)	$	1.52	$	0.94	$	2.66
Diluted net income (loss) per share	$	(0.86	)	$	1.52	$	0.93	$	2.65
Anti-dilutive securities excluded from the computation of diluted net income per share	—			2		—		56

__________________

(1) The Company has not had any outstanding stock options since August 2016.

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Income Taxes (Tables)

6 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Details of Income Taxes

The following table provides details of income taxes:

	Three months ended December 31,						Six months ended December 31,
(Dollar amounts in thousands)	2017			2016			2017			2016
Income before income taxes	$	347,307		$	306,845		$	683,459		$	529,065
Provision for income taxes	$	481,626		$	68,594		$	536,842		$	112,713
Effective tax rate	138.7		%	22.4		%	78.5		%	21.3		%

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Commitments and Contingencies (Tables)

6 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Receivables Sold Under Factoring Agreements

The following table shows total receivables sold under factoring agreements and proceeds from sales of LCs for the indicated periods:

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Receivables sold under factoring agreements	$	47,232	$	28,242	$	79,133	$	84,975
Proceeds from sales of LCs	$	—	$	9,740	$	5,571	$	13,148

Schedule of Future Minimum Rental Payments for Operating Leases

The following is a schedule of expected operating lease payments:

Fiscal year ending June 30,	Amount (In thousands)
2018 (remaining 6 months)	$	10,063
2019	7,478
2020	6,031
2021	4,561
2022	2,534
2023 and thereafter	4,551
Total minimum lease payments	$	35,218

Changes in Product Warranty Liability

The following table provides the changes in the product warranty accrual for the indicated periods:

	Three months ended December 31,						Six months ended December 31,
(In thousands)	2017			2016			2017			2016
Beginning balance	$	46,439		$	36,967		$	45,458		$	34,773
Accruals for warranties issued during the period	13,951			13,191			27,047			24,093
Changes in liability related to pre-existing warranties	(5,254		)	(1,131		)	(7,785		)	(1,576		)
Settlements made during the period	(10,123		)	(8,354		)	(19,707		)	(16,617		)
Ending balance	$	45,013		$	40,673		$	45,013		$	40,673

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Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments, Location, Designated and Non-Designated, Gains (Losses)

The locations and amounts of designated and non-designated derivative instruments’ gains and losses reported in the condensed consolidated financial statements for the indicated periods were as follows:

		Three months ended December 31,						Six months ended December 31,
(In thousands)	Location in Financial Statements	2017			2016			2017			2016
Derivatives Designated as Hedging Instruments
Gains (losses) in accumulated OCI on derivatives (effective portion)	Accumulated OCI	$	697		$	13,969		$	1,141		$	12,131
Gains (losses) reclassified from accumulated OCI into income (effective portion):	Revenues	$	397		$	(1,425	)	$	1,365		$	(2,906	)
	Costs of revenues	377			(69		)	1,338			(156		)
	Interest expense	189			189			378			378
	Net gains (losses) reclassified from accumulated OCI into income (effective portion)	$	963		$	(1,305	)	$	3,081		$	(2,684	)
Gains (losses) recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	Other expense (income), net	$	(158	)	$	(1,442	)	$	(229	)	$	(1,453	)
Derivatives Not Designated as Hedging Instruments
Gains (losses) recognized in income	Other expense (income), net	$	3,237		$	5,295		$	3,676		$	5,131

Schedule of Notional Amounts of Derivatives Outstanding

The U.S. dollar equivalent of all outstanding notional amounts of hedge contracts, with maximum remaining maturities of approximately 13 months as of December 31, 2017 and ten months June 30, 2017, respectively, were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Cash flow hedge contracts
Purchase	$	25,923	$	19,305
Sell	$	85,466	$	128,672
Other foreign currency hedge contracts
Purchase	$	144,442	$	165,563
Sell	$	155,260	$	118,504

Schedule of Derivative Instruments, Fair Value

The locations and fair value amounts of the Company’s derivative instruments reported in its Condensed Consolidated Balance Sheets as of the dates indicated below were as follows:

	Asset Derivatives					Liability Derivatives
	Balance Sheet  Location	As of December 31, 2017		As of June 30, 2017		Balance Sheet  Location	As of December 31, 2017		As of June 30, 2017
(In thousands)		Fair Value					Fair Value
Derivatives designated as hedging instruments
Foreign exchange contracts	Other current assets	$	1,271	$	2,198	Other current liabilities	$	126	$	72
Total derivatives designated as hedging instruments		$	1,271	$	2,198		$	126	$	72
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other current assets	$	3,203	$	3,733	Other current liabilities	$	289	$	1,203
Total derivatives not designated as hedging instruments		$	3,203	$	3,733		$	289	$	1,203
Total derivatives		$	4,474	$	5,931		$	415	$	1,275

Balances and Changes in Accumulated Other Comprehensive Income Related to Derivative Instruments

The following table provides the balances and changes in accumulated OCI, before taxes, related to derivative instruments for the indicated periods:

	Three months ended December 31,					Six months ended December 31,
(In thousands)	2017			2016		2017			2016
Beginning balance	$	6,452		$	751	$	8,126		$	1,210
Amount reclassified to income	(963		)	1,305		(3,081		)	2,684
Net change in unrealized gains or losses	697			13,969		1,141			12,131
Ending balance	$	6,186		$	16,025	$	6,186		$	16,025

Offsetting of Assets and Liabilities

As of December 31, 2017 and June 30, 2017, information related to the offsetting arrangements was as follows (in thousands):

As of December 31, 2017									Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
Description	Gross Amounts of Derivatives			Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets		Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets			Financial Instruments			Cash Collateral Received		Net Amount
Derivatives - Assets	$	4,474		$	—	$	4,474		$	(415	)	$	—	$	4,059
Derivatives - Liabilities	$	(415	)	$	—	$	(415	)	$	415		$	—	$	—

As of June 30, 2017									Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
Description	Gross Amounts of Derivatives			Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets		Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets			Financial Instruments			Cash Collateral Received		Net Amount
Derivatives - Assets	$	5,931		$	—	$	5,931		$	(1,275	)	$	—	$	4,656
Derivatives - Liabilities	$	(1,275	)	$	—	$	(1,275	)	$	1,275		$	—	$	—

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Related Party Transactions (Tables)

6 Months Ended

Dec. 31, 2017

Related Party Transactions [Abstract]

Related Party Transactions

The following table provides the transactions with these parties for the indicated periods (for the portion of such period that they were considered related):

	Three months ended December 31,				Six months ended December 31,
(In thousands)	2017		2016		2017		2016
Total revenues	$	455	$	8	$	457	$	8
Total purchases	$	542	$	226	$	1,246	$	583

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Segment Reporting and Geographic Information (Tables)

6 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Revenues by Geographic Region

The following is a summary of revenues by geographic region, based on ship-to location, for the indicated periods (as a percentage of total revenues):

	Three months ended December 31,								Six months ended December 31,
(Dollar amounts in thousands)	2017				2016				2017				2016
Revenues:
Korea	$	270,184	28	%	$	96,846	11	%	$	544,862	28	%	$	231,935	14	%
Taiwan	216,791		22	%	336,058		38	%	355,350		18	%	609,750		37	%
Japan	154,762		16	%	67,855		8	%	301,197		15	%	172,639		11	%
North America	149,042		15	%	153,162		17	%	278,292		14	%	240,428		15	%
Europe & Israel	82,158		8	%	93,440		11	%	165,663		9	%	128,288		8	%
China	66,460		7	%	73,152		9	%	234,799		12	%	158,841		10	%
Rest of Asia	36,425		4	%	56,372		6	%	65,240		4	%	85,677		5	%
Total	$	975,822	100	%	$	876,885	100	%	$	1,945,403	100	%	$	1,627,558	100	%

Revenues by Major Products

The following is a summary of revenues by major products for the indicated periods (as a percentage of total revenues):

	Three months ended December 31,								Six months ended December 31,
(Dollar amounts in thousands)	2017				2016				2017				2016
Revenues:
Wafer Inspection	$	400,584	41	%	$	428,875	49	%	$	790,004	41	%	$	784,736	48	%
Patterning	274,868		28	%	223,796		26	%	569,218		29	%	396,409		24	%
Global Service and Support(1)	273,805		28	%	217,249		24	%	534,303		27	%	425,235		26	%
Other	26,565		3	%	6,965		1	%	51,878		3	%	21,178		2	%
Total	$	975,822	100	%	$	876,885	100	%	$	1,945,403	100	%	$	1,627,558	100	%

__________________ 

(1) The Global Service and Support revenues includes service revenues as presented in the condensed consolidated statements of operations as well as certain product revenues, primarily revenues from the Company’s K-T Pro business.

Long-Lived Assets by Geographic Region

Long-lived assets by geographic region as of the dates indicated below were as follows:

(In thousands)	As of December 31, 2017		As of June 30, 2017
Long-lived assets:
United States	$	186,104	$	191,096
Singapore	41,924		39,118
Israel	28,658		30,182
Europe	13,335		13,300
Rest of Asia	11,613		10,279
Total	$	281,634	$	283,975

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Basis of Presentation - Revenue Recognition (Details)	6 Months Ended
	Dec. 31, 2017 Revenue_source
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of revenue sources	3
Standard warranty coverage (in hours per week)	40 hours
Standard warranty coverage period (in months)	12 months

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Fair Value Measurements (Details) - USD ($) $ in Thousands		Dec. 31, 2017		Jun. 30, 2017
Marketable securities:
Total cash equivalents and marketable securities		$ 2,243,530	[1]	$ 2,669,924	[2]
Other current assets:
Derivative assets		4,474		5,931
Other non-current assets:
Executive Deferred Savings Plan		192,169		182,150
Total financial assets		2,440,173	[1]	2,858,005	[2]
Other current liabilities:
Derivative liabilities		(415)		(1,275)
Total financial liabilities		(415)		(1,275)
Cash excluded from fair value measurement		481,100		307,400
Time deposits excluded from fair value measurement	[3]	33,581		39,389
Money market funds and other
Cash equivalents:
Cash equivalents		569,287		616,039
U.S. Treasury securities
Cash equivalents:
Cash equivalents		3,745
Marketable securities:
Marketable securities		404,983		373,299
Corporate debt securities
Cash equivalents:
Cash equivalents				76,472
Marketable securities:
Marketable securities		914,358		1,042,723
Sovereign securities
Cash equivalents:
Cash equivalents				10,050
Marketable securities:
Marketable securities		11,427		42,515
U.S. Government agency securities
Cash equivalents:
Cash equivalents				117,417
Marketable securities:
Marketable securities		339,730		391,409
Level 1
Marketable securities:
Total cash equivalents and marketable securities		1,303,503	[1]	1,357,459	[2]
Other current assets:
Derivative assets		0		0
Other non-current assets:
Executive Deferred Savings Plan		142,809		136,145
Total financial assets		1,446,312	[1]	1,493,604	[2]
Other current liabilities:
Derivative liabilities		0		0
Total financial liabilities		0		0
Level 1 | Money market funds and other
Cash equivalents:
Cash equivalents		569,287		616,039
Level 1 | U.S. Treasury securities
Cash equivalents:
Cash equivalents		0
Marketable securities:
Marketable securities		394,486		373,299
Level 1 | Corporate debt securities
Cash equivalents:
Cash equivalents				0
Marketable securities:
Marketable securities		0		0
Level 1 | Sovereign securities
Cash equivalents:
Cash equivalents				0
Marketable securities:
Marketable securities		0		0
Level 1 | U.S. Government agency securities
Cash equivalents:
Cash equivalents				0
Marketable securities:
Marketable securities		339,730		368,121
Level 2
Marketable securities:
Total cash equivalents and marketable securities		940,027	[1]	1,312,465	[2]
Other current assets:
Derivative assets		4,474		5,931
Other non-current assets:
Executive Deferred Savings Plan		49,360		46,005
Total financial assets		993,861	[1]	1,364,401	[2]
Other current liabilities:
Derivative liabilities		(415)		(1,275)
Total financial liabilities		(415)		(1,275)
Level 2 | Money market funds and other
Cash equivalents:
Cash equivalents		0		0
Level 2 | U.S. Treasury securities
Cash equivalents:
Cash equivalents		3,745
Marketable securities:
Marketable securities		10,497		0
Level 2 | Corporate debt securities
Cash equivalents:
Cash equivalents				76,472
Marketable securities:
Marketable securities		914,358		1,042,723
Level 2 | Sovereign securities
Cash equivalents:
Cash equivalents				10,050
Marketable securities:
Marketable securities		11,427		42,515
Level 2 | U.S. Government agency securities
Cash equivalents:
Cash equivalents				117,417
Marketable securities:
Marketable securities		$ 0		$ 23,288

[1] Excludes cash of $481.1 million held in operating accounts and time deposits of $33.6 million as of December 31, 2017.

[2] Excludes cash of $307.4 million held in operating accounts and time deposits of $39.4 million as of June 30, 2017.

[3] Time deposits excluded from fair value measurements.

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Financial Statement Components - Balance Sheet Components (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Accounts receivable, net:
Accounts receivable, gross		$ 752,618		$ 752,618		$ 592,753
Allowance for doubtful accounts		(11,715)		(11,715)		(21,636)
Accounts receivable, net		740,903		740,903		571,117
Inventories:
Customer service parts		248,937		248,937		245,172
Raw materials		248,475		248,475		240,389
Work-in-process		237,261		237,261		193,026
Finished goods		53,298		53,298		54,401
Inventories		787,971		787,971		732,988
Other current assets:
Prepaid expenses		46,451		46,451		36,146
Other current assets		11,512		11,512		13,004
Income tax related receivables		8,966		8,966		22,071
Other current assets, total		66,929		66,929		71,221
Land, property and equipment, net:
Land		40,620		40,620		40,617
Buildings and leasehold improvements		323,143		323,143		319,306
Machinery and equipment		568,203		568,203		551,277
Office furniture and fixtures		21,909		21,909		21,328
Construction-in-process		7,214		7,214		4,597
Land, property and equipment, gross		961,089		961,089		937,125
Less: accumulated depreciation and amortization		(679,455)		(679,455)		(653,150)
Land, property and equipment, net		281,634		281,634		283,975
Other non-current assets:
Executive Deferred Savings Plan	[1]	192,169		192,169		182,150
Other non-current assets		19,146		19,146		13,526
Other non-current assets, total		211,315		211,315		195,676
Other current liabilities:
Compensation and benefits		222,503		222,503		172,707
Executive Deferred Savings Plan	[1]	192,849		192,849		183,603
Customer credits and advances		116,856		116,856		95,188
Other accrued expenses		86,865		86,865		116,039
Warranty		45,013		45,013		45,458
Income taxes payable		22,525		22,525		17,040
Interest payable		17,008		17,008		19,396
Other current liabilities, total		703,619		703,619		649,431
Other non-current liabilities:
Income taxes payable		355,849		355,849		68,439
Pension liabilities		74,868		74,868		72,801
Other non-current liabilities		30,025		30,025		31,167
Other non-current liabilities, total		460,742		$ 460,742		$ 172,407
Maximum contractual term				15 years
Selling, general and administrative
Other non-current liabilities:
EDSP Liability		7,000	$ 1,200	$ 13,800	$ 7,000
Gain (loss) on deferred compensation plan assets		$ 7,000	$ 800	$ 13,900	$ 6,700

[1] KLA-Tencor has a non-qualified deferred compensation plan (known as “Executive Deferred Savings Plan”) under which certain executives and non-employee directors may defer a portion of their compensation. Participants are credited with returns based on their allocation of their account balances among measurement funds. The Company controls the investment of these funds, and the participants remain general creditors of the Company. The Company invests these funds in certain mutual funds and such investments are classified as trading securities in the condensed consolidated balance sheets. Distributions from the Executive Deferred Savings Plan commence following a participant’s retirement or termination of employment or on a specified date allowed per the Executive Deferred Savings Plan provisions, except in cases where such distributions are required to be delayed in order to avoid a prohibited distribution under Internal Revenue Code Section 409A. Participants can generally elect the distributions to be paid in lump sum or quarterly cash payments over a scheduled period for up to 15 years and are allowed to make subsequent changes to their existing elections as permissible under the Executive Deferred Savings Plan provisions. Changes in the Executive Deferred Savings Plan liability are recorded in selling, general and administrative expense in the condensed consolidated statements of operations. The expense associated with changes in the liability included in selling, general and administrative expense was $7.0 million and $1.2 million during the three months ended December 31, 2017 and 2016, respectively and $13.8 million and $7.0 million during the six months ended December 31, 2017 and 2016. Changes in the Executive Deferred Savings Plan assets are recorded as gains (losses), net in selling, general and administrative expense in the condensed consolidated statements of operations. The amount of net gains included in selling, general and administrative expense was $7.0 million and $0.8 million during the three months ended December 31, 2017 and 2016, respectively and $13.9 million and $6.7 million during the six months ended December 31, 2017 and 2016, respectively.

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Financial Statement Components - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss)
Stockholders' equity	$ 1,225,625	$ 1,326,417
Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss)
Stockholders' equity	(26,614)	(30,654)
Unrealized Gains (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss)
Stockholders' equity	(7,751)	(3,869)
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss)
Stockholders' equity	3,957	5,221
Unrealized Gains (Losses) on Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Stockholders' equity	(22,114)	(22,021)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Stockholders' equity	$ (52,522)	$ (51,323)

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Financial Statement Components - Effects on net income of amounts reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss)
Revenues	$ 975,822	$ 876,885	$ 1,945,403	$ 1,627,558
Costs of revenues	(347,334)	(318,507)	(700,783)	(596,343)
Interest expense	27,372	30,624	57,948	61,356
Net income (loss)	(134,319)	238,251	146,617	416,352
Unrealized Gains (Losses) on Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Other comprehensive (income) loss, reclassification adjustment from AOCI, pension and other postretirement benefit plans, net of tax	(400)	(900)	(800)	(1,300)
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on cash flow hedges from foreign exchange and interest rate contracts
Accumulated Other Comprehensive Income (Loss)
Revenues	397	(1,425)	1,365	(2,906)
Costs of revenues	377	(69)	1,338	(156)
Interest expense	189	189	378	378
Net income (loss)	963	(1,305)	3,081	(2,684)
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on available-for-sale securities
Accumulated Other Comprehensive Income (Loss)
Other expense (income), net	$ (69)	$ 30	$ (63)	$ 234

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Marketable Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands		6 Months Ended
		Dec. 31, 2017	Jun. 30, 2017
Marketable Securities
Amortized Cost		$ 2,253,176	$ 2,674,437
Gross Unrealized Gains		220	712
Gross Unrealized Losses		(9,866)	(5,225)
Fair Value		2,243,530	2,669,924
Add: Time deposits	[1]	33,581	39,389
Less: Cash equivalents, Amortized Cost		592,315	845,639
Less: Cash equivalents, Gross Unrealized Gains		0	0
Less: Cash equivalents, Gross Unrealized Losses		0	(15)
Less: Cash equivalents, Fair Value		592,315	845,624
Marketable securities, Amortized Cost		1,694,442	1,868,187
Marketable securities, Gross Unrealized Gains		220	712
Marketable securities, Gross Unrealized Losses		(9,866)	(5,210)
Marketable securities, Fair Value		1,684,796	1,863,689
Corporate debt securities
Marketable Securities
Amortized Cost		918,399	1,120,548
Gross Unrealized Gains		204	598
Gross Unrealized Losses		(4,245)	(1,951)
Fair Value		914,358	1,119,195
Money market funds and other
Marketable Securities
Amortized Cost		569,287	616,039
Gross Unrealized Gains		0	0
Gross Unrealized Losses		0	0
Fair Value		569,287	616,039
Sovereign securities
Marketable Securities
Amortized Cost		11,496	52,621
Gross Unrealized Gains		0	0
Gross Unrealized Losses		(69)	(56)
Fair Value		11,427	52,565
U.S. Government agency securities
Marketable Securities
Amortized Cost		342,325	510,553
Gross Unrealized Gains		16	62
Gross Unrealized Losses		(2,611)	(1,789)
Fair Value		339,730	508,826
U.S. Treasury securities
Marketable Securities
Amortized Cost		411,669	374,676
Gross Unrealized Gains		0	52
Gross Unrealized Losses		(2,941)	(1,429)
Fair Value		$ 408,728	$ 373,299
Corporate and Government securities
Marketable Securities
Investment portfolio, maximum maturity term		3 years

[1] Time deposits excluded from fair value measurements.

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Marketable Securities - Continuous Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Investments in an Unrealized Loss Position
Fair Value	$ 1,542,909
Gross Unrealized Losses, less than 12 months	(9,866)	[1]
Gross Unrealized Losses, 12 months or more	5,300
Corporate debt securities
Investments in an Unrealized Loss Position
Fair Value	792,436
Gross Unrealized Losses, less than 12 months	(4,245)	[1]
U.S. Treasury securities
Investments in an Unrealized Loss Position
Fair Value	404,982
Gross Unrealized Losses, less than 12 months	(2,941)	[1]
U.S. Government agency securities
Investments in an Unrealized Loss Position
Fair Value	334,064
Gross Unrealized Losses, less than 12 months	(2,611)	[1]
Sovereign securities
Investments in an Unrealized Loss Position
Fair Value	11,427
Gross Unrealized Losses, less than 12 months	$ (69)	[1]

[1] As of December 31, 2017, the amount of total gross unrealized losses related to investments that had been in a continuous loss position for 12 months or more was $5.3 million.

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Marketable Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Amortized Cost
Due within one year	$ 521,930
Due after one year through three years	1,172,512
Marketable securities, Amortized Cost	1,694,442	$ 1,868,187
Fair Value
Due within one year	520,623
Due after one year through three years	1,164,173
Marketable securities, Fair Value	$ 1,684,796	$ 1,863,689

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Business Combination - Additional Information (Details) - USD ($)		3 Months Ended	6 Months Ended
	Jun. 09, 2017	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Business Acquisition [Line Items]
Purchase consideration, acquisition holdback paid			$ 5,490,000	$ 0
Goodwill		$ 350,023,000	350,023,000		$ 349,526,000
Privately-Held Design and Manufacturing Company
Business Acquisition [Line Items]
Total purchase consideration	$ 37,100,000
Purchase consideration, acquisition holdback paid		4,800,000
Goodwill	$ 14,800,000	14,764,000	14,764,000
Goodwill recognized, deductible for income tax purposes		$ 0	$ 0

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Business Combination - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017	Jun. 09, 2017
Preliminary Purchase Price Allocation
Goodwill	$ 350,023	$ 349,526
Privately-Held Design and Manufacturing Company
Preliminary Purchase Price Allocation
Intangible assets	17,660
Goodwill	14,764		$ 14,800
Assets acquired (including cash and marketable securities of $3.2 million)	5,981
Liabilities assumed	(1,334)
Fair value of net assets acquired	37,071
Cash and marketable securities	$ 3,200

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Goodwill and Purchased Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
	Dec. 31, 2017 USD ($) reporting_unit	Jun. 30, 2017 USD ($)
Goodwill
Number of reporting units | reporting_unit	4
Goodwill
Balance as of June 30, 2017	$ 349,526
Foreign currency and other adjustments	497
Balance as of December 31, 2017	350,023
Accumulated impairment loss	277,600	$ 277,600
Wafer Inspection
Goodwill
Balance as of June 30, 2017	281,095
Foreign currency and other adjustments	13
Balance as of December 31, 2017	281,108
Patterning
Goodwill
Balance as of June 30, 2017	53,255
Foreign currency and other adjustments	0
Balance as of December 31, 2017	53,255
GSS
Goodwill
Balance as of June 30, 2017	2,856
Foreign currency and other adjustments	97
Balance as of December 31, 2017	2,953
Others
Goodwill
Balance as of June 30, 2017	12,320
Foreign currency and other adjustments	387
Balance as of December 31, 2017	$ 12,707

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Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Components of purchased intangible assets
Gross Carrying Amount	$ 234,192		$ 234,192		$ 234,192
Accumulated Amortization and Impairment	217,629		217,629		215,229
Total	16,563		16,563		18,963
Other intangible assets, amortization expense	1,200	$ 500	2,400	$ 1,800
Existing technology
Components of purchased intangible assets
Gross Carrying Amount	157,259		157,259		157,259
Accumulated Amortization and Impairment	142,459		142,459		140,346
Total	14,800		$ 14,800		16,913
Existing technology | Minimum
Components of purchased intangible assets
Range of Useful Lives			4 years
Existing technology | Maximum
Components of purchased intangible assets
Range of Useful Lives			7 years
Trade name/Trademark
Components of purchased intangible assets
Range of Useful Lives			7 years
Gross Carrying Amount	20,993		$ 20,993		20,993
Accumulated Amortization and Impairment	19,981		19,981		19,902
Total	1,012		1,012		1,091
Customer relationships
Components of purchased intangible assets
Gross Carrying Amount	55,680		55,680		55,680
Accumulated Amortization and Impairment	55,036		55,036		54,959
Total	644		$ 644		721
Customer relationships | Minimum
Components of purchased intangible assets
Range of Useful Lives			7 years
Customer relationships | Maximum
Components of purchased intangible assets
Range of Useful Lives			8 years
Backlog
Components of purchased intangible assets
Gross Carrying Amount	260		$ 260		260
Accumulated Amortization and Impairment	153		153		22
Total	$ 107		$ 107		$ 238
Backlog | Maximum
Components of purchased intangible assets
Range of Useful Lives			1 year

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Goodwill and Purchased Intangible Assets - Future Estimated Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Remaing Estimated Amortization Expense
2018 (remaining 6 months)	$ 1,851
2019	2,486
2020	2,486
2021	2,486
2022	2,486
Thereafter	4,768
Total	$ 16,563	$ 18,963

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Debt - Schedule of Debt (Details) - USD ($) $ in Thousands		Dec. 31, 2017		Jun. 30, 2017	Nov. 30, 2014	Oct. 31, 2014
Debt Instrument
Total debt, gross		$ 2,500,000		$ 2,946,250
Unamortized discount		(2,704)		(2,901)
Unamortized debt issuance costs		(10,870)		(12,892)
Total debt, net of discount		2,486,426		2,930,457
Current portion of long-term debt		0		249,983
Long-term debt		2,486,426		2,680,474
Senior notes
Debt Instrument
Unamortized discount					$ (4,000)
Term loans
Debt Instrument
Total debt, gross		$ 0		$ 446,250
Effective interest rate		0.00%		2.137%
Line of credit | Revolving Credit Facility
Debt Instrument
Total debt, gross		$ 250,000		$ 0
Effective interest rate		2.634%		0.00%
Fixed-rate 2.375% Senior notes due on November 1, 2017 | Senior notes
Debt Instrument
Stated interest rate		2.375%
Total debt, gross		$ 0		$ 250,000
Effective interest rate		0.00%		2.396%
Fixed-rate 3.375% Senior notes due on November 1, 2019 | Senior notes
Debt Instrument
Stated interest rate		3.375%
Total debt, gross		$ 250,000		$ 250,000
Effective interest rate		3.377%		3.377%
Fixed-rate 4.125% Senior notes due on November 1, 2021 | Senior notes
Debt Instrument
Stated interest rate		4.125%
Total debt, gross		$ 500,000		$ 500,000
Effective interest rate		4.128%		4.128%
Fixed-rate 4.650% Senior notes due on November 1, 2024 | Senior notes
Debt Instrument
Stated interest rate		4.65%	[1]			4.65%
Total debt, gross	[1]	$ 1,250,000		$ 1,250,000
Effective interest rate	[1]	4.682%		4.682%
Fixed-rate 5.650% Senior notes due on November 1, 2034 | Senior notes
Debt Instrument
Stated interest rate		5.65%
Total debt, gross		$ 250,000		$ 250,000
Effective interest rate		5.67%		5.67%
Portion of senior notes | Cash flow hedge contracts | Senior notes | Treasury lock | Derivatives designated as hedging instruments
Debt Instrument
Effective percentage including treasury rate lock hedge		4.626%

[1] The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.

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Debt - Schedule of Future Principal Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Long-term Debt, Fiscal Year Maturity [Abstract]
2018 (remaining 6 months)	$ 0
2019	0
2020	250,000
2021	0
2022	500,000
Thereafter	1,750,000
Total payments	$ 2,500,000	$ 2,946,250

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Debt - Senior Notes (Details) - USD ($)		1 Months Ended	3 Months Ended			6 Months Ended
	Nov. 19, 2014	Nov. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017	Nov. 30, 2014	Oct. 31, 2014
Debt Instrument
Cash dividends declared (in dollars per share)			$ 0.59	$ 0.54		$ 1.18	$ 1.06
Unamortized discount			$ 2,704,000			$ 2,704,000		$ 2,901,000
Repayment of debt						$ 696,250,000	$ 80,000,000
Portion of senior notes | Derivatives designated as hedging instruments | Treasury lock | Senior notes | Cash flow hedge contracts
Debt Instrument
Notional amount of derivative										$ 1,000,000,000.00
Special cash dividend
Debt Instrument
Cash dividends declared (in dollars per share)	$ 16.50
Cash dividends					$ 2,760,000,000
Senior notes
Debt Instrument
Face amount									$ 2,500,000,000.0
Unamortized discount									4,000,000
Repayment of debt		$ 250,000,000
Redemption price						101.00%
Fair value disclosure			$ 2,410,000,000			$ 2,410,000,000		$ 2,670,000,000
Senior notes | Standard & Poor's, BB plus Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						0.25%
Senior notes | Standard & Poor's, BB Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						0.50%
Senior notes | Standard & Poor's, BB- Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						0.75%
Senior notes | Standard & Poor's, B Plus or Below
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						1.00%
Senior notes | Moody's, Ba1 Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						0.25%
Senior notes | Moody's, Ba2 Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						0.50%
Senior notes | Moody's, Ba3 Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						0.75%
Senior notes | Moody's, B1 Rating
Debt Instrument
Decrease in credit rating, interest rate adjustment (in bps)						1.00%
Senior notes | 2018 Senior Notes | Derivatives Not Designated as Hedging Instruments | Treasury lock
Debt Instrument
Face amount									$ 750,000,000

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Debt - Credit Facility (Details)	1 Months Ended		6 Months Ended
	Nov. 30, 2017 USD ($)	Nov. 30, 2014 USD ($)	Dec. 31, 2017 quarter
Term loans
Debt Instrument
Face amount		$ 750,000,000
Debt instrument, term		5 years
Line of credit | Revolving credit facility
Debt Instrument
Debt instrument, term	5 years
Maximum borrowing capacity	$ 750,000,000	$ 500,000,000
Increase limit to borrowing capacity	250,000,000
Outstanding draw under the revolving credit facility	$ 250,000,000
Commitment fee percentage (in bps)			0.15%
Covenant compliance, number of consecutive quarters | quarter			4
Covenant compliance, minimum interest expense coverage ratio			3.50
Maximum leverage ratio			3.00
Minimum leverage ratio under a material acquisition or series of material acquisitions			4.00
Line of credit | Revolving credit facility | LIBOR
Debt Instrument
Basis spread on variable rate (in bps)			1.25%
Line of credit | Revolving credit facility | Minimum
Debt Instrument
Commitment fee percentage (in bps)			0.10%
Line of credit | Revolving credit facility | Minimum | Alternative base rate
Debt Instrument
Basis spread on variable rate (in bps)			0.00%
Line of credit | Revolving credit facility | Minimum | LIBOR
Debt Instrument
Basis spread on variable rate (in bps)			1.00%
Line of credit | Revolving credit facility | Maximum
Debt Instrument
Commitment fee percentage (in bps)			0.25%
Line of credit | Revolving credit facility | Maximum | Alternative base rate
Debt Instrument
Basis spread on variable rate (in bps)			0.75%
Line of credit | Revolving credit facility | Maximum | LIBOR
Debt Instrument
Basis spread on variable rate (in bps)			1.75%

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Equity and Long-Term Incentive Compensation Plans - Equity Incentive Program (Details) $ in Thousands		6 Months Ended
		Dec. 31, 2017 shares	Dec. 31, 2017 USD ($) plan shares	Dec. 31, 2016 USD ($)	Jun. 30, 2016 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans | plan			2
Maximum number of shares available for grant (in shares)	[1]	4,710,000	4,137,000
Total Shares Available for Grant under the Company's equity incentive plans:
Balance as of June 30, 2017 (in shares)	[1]	4,710,000
Balance as of December 31, 2017 (in shares)	[1]	4,137,000
Dividends payable | $			$ 7,590	$ 12,763
2004 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance (in shares)			2,500,000.0
Percent of fair market value on grant date			100.00%
Outside Director Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares available for grant (in shares)		1,700,000	1,700,000
Total Shares Available for Grant under the Company's equity incentive plans:
Balance as of December 31, 2017 (in shares)		1,700,000
Restricted stock units
Total Shares Available for Grant under the Company's equity incentive plans:
Restricted stock units granted (in shares)	[1],[2]	(665,000)
Restricted stock units granted, adjustment (in shares)	[1],[3]	33,000
Restricted stock units canceled (in shares)	[1]	59,000
Restricted stock units | 2004 Plan
Total Shares Available for Grant under the Company's equity incentive plans:
Restricted stock units granted (in shares)	[4],[5]	(333,000)
Restricted stock units granted, adjustment (in shares)	[5],[6]	17,000
Restricted stock units canceled (in shares)	[5]	30,000
Restricted stock unit, Performance-based and Service-based
Total Shares Available for Grant under the Company's equity incentive plans:
Dividends payable | $			$ 7,600
Restricted stock unit, Performance-based and Service-based | 2004 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares available for grant (in shares)		42,000	200,000		300,000
Total Shares Available for Grant under the Company's equity incentive plans:
Balance as of June 30, 2017 (in shares)		42,000
Balance as of December 31, 2017 (in shares)		200,000
Restricted stock unit, Performance-based and Service-based | Outside Director Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares available for grant (in shares)		300,000	300,000
Total Shares Available for Grant under the Company's equity incentive plans:
Balance as of December 31, 2017 (in shares)		300,000
Awards Granted before November 6, 2013 | 2004 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on share reserve multiplier			1.8
Awards Granted before November 6, 2013 | Outside Director Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on share reserve multiplier			1.8
Awards Granted after November 6, 2013 | 2004 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on share reserve multiplier			2.0
Awards Granted after November 6, 2013 | Outside Director Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on share reserve multiplier			2.0

[1] The number of restricted stock units reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).

[2] Includes restricted stock units granted to senior management during the six months ended December 31, 2017 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units granted during the six months ended December 31, 2017, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.3 million shares for the six months ended December 31, 2017 reflects the application of the multiplier described above).

[3] Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the six months ended December 31, 2017.

[4] Includes restricted stock units granted to senior management with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units, reported at the maximum possible number of shares (0.3 million shares for the fiscal year ended June 30, 2016, 42 thousand shares for the fiscal year ended June 30, 2017 and 0.2 million shares for the six months ended December 31, 2017) that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied

[5] Share numbers reflect actual shares subject to awarded restricted stock units. As described above, under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.

[6] Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during six months ended December 31, 2017.

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Equity and Long-Term Incentive Compensation Plans - Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Stock-based compensation expense
Stock-based compensation expense	$ 13,739	$ 12,444	$ 27,770	$ 23,922
Stock-based compensation capitalized as inventory	3,039		3,039		$ 2,820
Costs of revenues
Stock-based compensation expense
Stock-based compensation expense	1,656	1,305	3,072	2,567
Research and development
Stock-based compensation expense
Stock-based compensation expense	2,275	2,052	4,446	4,073
Selling, general and administrative
Stock-based compensation expense
Stock-based compensation expense	$ 9,808	$ 9,087	$ 20,252	$ 17,282

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Equity and Long-Term Incentive Compensation Plans - Restricted Stock Unit Activities (Details) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 $ / shares	Dec. 31, 2017 USD ($) Installment $ / shares shares	Dec. 31, 2016 $ / shares	Jun. 30, 2017 shares	Jun. 30, 2016 shares
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Maximum number of shares available for grant (in shares)	[1]	4,137		4,137		4,710
Restricted stock units
Restricted Stock Units Activity Rollforward
Granted (in shares)	[1],[2]			665
Granted adjustments (in shares)	[1],[3]			(33)
Forfeited (in shares)	[1]			(59)
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Restricted stock units granted, weighted-average grant date fair value (in dollars per share) | $ / shares		$ 105.15	$ 75.38	$ 91.39	$ 70.95
Unrecognized stock-based compensation balance | $		$ 104.8		$ 104.8
Estimated weighted-average amortization period				1 year 7 months 18 days
Intrinsic value, RSUs | $		$ 196.0		$ 196.0
Restricted stock unit, Service-based | Minimum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, number of equal vesting installments | Installment				3
Restricted stock unit, Service-based | Maximum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, number of equal vesting installments | Installment				4
Restricted stock unit, Performance-based and Service-based
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, number of equal vesting installments | Installment				2
First anniversary | Restricted stock unit, Service-based | Minimum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				33.33%
First anniversary | Restricted stock unit, Service-based | Maximum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				25.00%
Second anniversary | Restricted stock unit, Service-based | Minimum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				33.33%
Second anniversary | Restricted stock unit, Service-based | Maximum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				25.00%
Third anniversary | Restricted stock unit, Service-based | Minimum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				33.33%
Third anniversary | Restricted stock unit, Service-based | Maximum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				25.00%
Third anniversary | Restricted stock unit, Performance-based and Service-based
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				50.00%
Fourth anniversary | Restricted stock unit, Service-based | Maximum
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				25.00%
Fourth anniversary | Restricted stock unit, Performance-based and Service-based
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Service and performance-based, percentage of equal vesting installments (as a percent)				50.00%
2004 Plan | Restricted stock units
Restricted Stock Units Activity Rollforward
Outstanding restricted stock units as of June 30, 2017 (in shares)	[4],[5]			2,241
Granted (in shares)	[4],[5]			333
Granted adjustments (in shares)	[5],[6]			(17)
Vested and released (in shares)	[5]			(379)
Withheld for taxes (in shares)	[5]			(283)
Forfeited (in shares)	[5]			(30)
Outstanding restricted stock units as of December 31, 2017 (in shares)	[4],[5]	1,865		1,865
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Outstanding restricted stock units as of June 30, 2017, weighted-average grant date fair value (in dollars per share) | $ / shares	[4]			$ 68.24
Restricted stock units granted, weighted-average grant date fair value (in dollars per share) | $ / shares	[4]			91.39
Restricted stock units granted adjustments, weighted-average grant date fair value (in dollars per share) | $ / shares	[6]			74.26
Restricted stock units vested and released, weighted-average grant date fair value (in dollars per share) | $ / shares				63.22
Restricted stock units withheld for taxes, weighted-average grant date fair value (in dollars per share) | $ / shares				63.22
Restricted stock units forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares				66.10
Outstanding restricted stock units as of December 31, 2017, weighted-average grant date fair value (in dollars per share) | $ / shares	[4]	$ 74.13		$ 74.13
2004 Plan | Restricted stock unit, Performance-based and Service-based
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Maximum number of shares available for grant (in shares)		200		200		42	300
Awards Granted before November 6, 2013 | 2004 Plan
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Impact on share reserve multiplier		1.8		1.8
Awards Granted after November 6, 2013 | 2004 Plan
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward
Impact on share reserve multiplier		2.0		2.0

[1] The number of restricted stock units reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).

[2] Includes restricted stock units granted to senior management during the six months ended December 31, 2017 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units granted during the six months ended December 31, 2017, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.3 million shares for the six months ended December 31, 2017 reflects the application of the multiplier described above).

[3] Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the six months ended December 31, 2017.

[4] Includes restricted stock units granted to senior management with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2017, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based restricted stock units, reported at the maximum possible number of shares (0.3 million shares for the fiscal year ended June 30, 2016, 42 thousand shares for the fiscal year ended June 30, 2017 and 0.2 million shares for the six months ended December 31, 2017) that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied

[5] Share numbers reflect actual shares subject to awarded restricted stock units. As described above, under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.

[6] Represents the portion of restricted stock units granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during six months ended December 31, 2017.

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Equity and Long-Term Incentive Compensation Plans - Restricted Stock Units (Details) - Restricted stock units - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per unit (in dollars per share)	$ 105.15	$ 75.38	$ 91.39	$ 70.95
Grant date fair value of vested restricted stock units	$ 5,322	$ 1,843	$ 41,856	$ 31,051
Tax benefits (expense) realized by the Company in connection with vested and released restricted stock units	$ (1,930)	$ 765	$ 16,482	$ 14,694

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Equity and Long-Term Incentive Compensation Plans - Cash-Based Long-Term Incentive Compensation (Details) - Cash long-term incentive plan $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017 USD ($) Installment	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Cash Long-Term Incentive Plan
Cash-based long-term incentive plan, granted amount			$ 4.0	$ 50.3
Cash long-term incentive plan, compensation expense	$ 11.5	$ 11.2	26.3	$ 23.4
Cash long-term incentive plan, unrecognized compensation balance	$ 102.4		$ 102.4
Minimum
Cash Long-Term Incentive Plan
Cash long-term incentive plan, equal vesting installments | Installment	3
Cash long-term incentive plan, percentage of equal vesting installments			33.33%
Cash long-term incentive plan, vesting period	3 years
Maximum
Cash Long-Term Incentive Plan
Cash long-term incentive plan, equal vesting installments | Installment	4
Cash long-term incentive plan, percentage of equal vesting installments			25.00%
Cash long-term incentive plan, vesting period	4 years

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Equity and Long-Term Incentive Compensation Plans - Employee Stock Purchase Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jan. 02, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP maximum employee subscription rate	10.00%		10.00%
ESPP, offering period			6 months
ESPP, discount from market price, lesser of commencement of offering period or purchase date			85.00%
Employee Stock Purchase Plan Additional Information
Total cash received from employees for the issuance of shares under the ESPP	$ 20,579	$ 23,694	$ 20,579	$ 23,694
Number of shares purchased by employees through the ESPP (in shares)	264,000	384,000	264,000	384,000
Tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP	$ 47	$ 218	$ 894	$ 922
Weighted-average fair value per share based on Black-Scholes model (in dollars per share)	$ 19.04	$ 14.05	$ 19.04	$ 14.05
ESPP maximum annual share replenishment (in shares)	2,000,000		2,000,000
Number of ESPP shares available for future issuance (in shares)	2,400,000		2,400,000
Employee Stock Purchase Plan
ESPP, Fair Value Assumptions and Methodology
Expected stock price volatility	25.90%	20.60%	25.90%	20.60%
Risk-free interest rate	0.90%	0.40%	0.90%	0.40%
Dividend yield	2.60%	3.00%	2.60%	3.00%
Expected life (in years)	6 months	6 months	6 months	6 months
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP maximum employee subscription rate					15.00%

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Equity and Long-Term Incentive Compensation Plans - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended			6 Months Ended
	Dec. 01, 2017	Nov. 01, 2017	Dec. 09, 2014	Nov. 19, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Dividends Payable
Cash dividends declared (in dollars per share)					$ 0.59	$ 0.54		$ 1.18	$ 1.06
Payment of dividends								$ 192,902	$ 173,842
Dividends payable					$ 7,590	$ 12,763		7,590	12,763
Restricted stock unit, Performance-based and Service-based
Dividends Payable
Dividends payable					7,600			7,600
Regular cash dividend
Dividends Payable
Cash dividends declared (in dollars per share)		$ 0.59
Cash dividends paid per share (in dollars per share)	$ 0.59
Regular cash dividend | Restricted stock unit, Performance-based and Service-based
Dividends Payable
Dividends payable					4,800			4,800		$ 4,800
Regular cash dividend | Additional paid-in capital
Dividends Payable
Payment of dividends					92,600	$ 84,500		186,700	166,100
Special cash dividend
Dividends Payable
Cash dividends declared (in dollars per share)				$ 16.50
Cash dividends paid per share (in dollars per share)			$ 16.50
Cash dividends paid							$ 2,760,000
Special cash dividend | Restricted stock unit, Performance-based and Service-based
Dividends Payable
Dividends payable					$ 2,800		$ 43,000	2,800		$ 9,000
Cash dividends paid								$ 6,200	$ 7,700

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Stock Repurchase Program (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Equity, Class of Treasury Stock
Remaining number of shares authorized to be repurchased (in shares)	4,900,000		4,900,000
Total cost of repurchases	$ 40,868	$ 0	$ 81,643	$ 0
Common Stock and Capital in Excess of Par Value, Shares
Equity, Class of Treasury Stock
Number of shares of common stock repurchased (in shares)	388,000	0	822,000	0
Number of shares of common stock repurchased, not settled (in shares)			12,000
Shares of common stock repurchased, not settled			$ 1,300

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Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Numerator:
Net income (loss)		$ (134,319)	$ 238,251	$ 146,617	$ 416,352
Denominator:
Weighted-average shares-basic, excluding unvested restricted stock units (in shares)		156,587,000	156,335,000	156,707,000	156,232,000
Effect of dilutive restricted stock units and options (in shares)	[1]	0	788,000	981,000	839,000
Weighted-average shares-diluted (in shares)		156,587,000	157,123,000	157,688,000	157,071,000
Basic net income (loss) per share (in dollars per share)		$ (0.86)	$ 1.52	$ 0.94	$ 2.66
Diluted net income (loss) per share (in dollars per share)		$ (0.86)	$ 1.52	$ 0.93	$ 2.65
Anti-dilutive securities excluded from the computation of diluted net income per share (in shares)		0	2,000	0	56,000
Stock options outstanding (in shares)		0		0

[1] The Company has not had any outstanding stock options since August 2016.

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Income Taxes - Details of Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income before income taxes	$ 347,307	$ 306,845	$ 683,459	$ 529,065
Provision for income taxes	$ 481,626	$ 68,594	$ 536,842	$ 112,713
Effective tax rate	138.70%	22.40%	78.50%	21.30%

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Income Taxes - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended	12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2017	Jun. 30, 2018
Effective Income Tax Reconciliation [Line Items]
U.S. federal corporate tax rate		35.00%	35.00%
Increase in provision for income taxes		$ 413.0	$ 424.1
Transition tax		340.9	340.9
Increase in income tax expense from re-measurement of deferred tax assets and liabilities		101.1	101.1
Decrease related to reduction of U.S. federal corporate tax rate		25.0	25.0
Provisional tax amount included as a component of income tax expense from continuing operations		442.0	442.0
Amount of unrecorded benefit		$ 12.6	$ 12.6
Forecast
Effective Income Tax Reconciliation [Line Items]
U.S. federal corporate tax rate, blended rate				28.10%
Subsequent Event
Effective Income Tax Reconciliation [Line Items]
U.S. federal corporate tax rate	21.00%

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Commitments and Contingencies (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017 USD ($) Installment	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Receivables Sold Under Factoring Agreements
Receivables sold under factoring agreements	$ 47,232	$ 28,242	$ 79,133	$ 84,975
Proceeds from sales of LCs	0	9,740	5,571	13,148
Operating leases, rent expense	2,500	2,400	5,000	4,800
Operating Leases, Future Minimum Payments Due
2018 (remaining 6 months)	10,063		10,063
2019	7,478		7,478
2020	6,031		6,031
2021	4,561		4,561
2022	2,534		2,534
2023 and thereafter	4,551		4,551
Total minimum lease payments	35,218		35,218
Commitments and Contingencies
Purchase commitments	481,000		$ 481,000
Majority outstanding purchase commitment, period due (in months)			12 months
Cash-based long-term incentive plan, committed amount	120,200		$ 120,200
Standard warranty coverage (in hours per week)			40 hours
Standard warranty coverage period (in months)			12 months
Changes in Product Warranty Accrual
Beginning balance	46,439	36,967	$ 45,458	34,773
Accruals for warranties issued during the period	13,951	13,191	27,047	24,093
Changes in liability related to pre-existing warranties	(5,254)	(1,131)	(7,785)	(1,576)
Settlements made during the period	(10,123)	(8,354)	(19,707)	(16,617)
Ending balance	$ 45,013	$ 40,673	45,013	$ 40,673
Guarantee arrangements to fund customs guarantees for VAT and other operating requirements			21,800
Outstanding guarantee arrangements to fund customs guarantees for VAT and other operating requirements			$ 16,000
Minimum | Cash long-term incentive plan
Commitments and Contingencies
Cash long-term incentive plan, equal vesting installments | Installment	3
Cash long-term incentive plan, percentage of equal vesting installments			33.33%
Cash long-term incentive plan, vesting period	3 years
Maximum | Cash long-term incentive plan
Commitments and Contingencies
Cash long-term incentive plan, equal vesting installments | Installment	4
Cash long-term incentive plan, percentage of equal vesting installments			25.00%
Cash long-term incentive plan, vesting period	4 years

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Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($)	3 Months Ended			6 Months Ended
	Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2014	Nov. 30, 2014	Oct. 31, 2014
Senior notes
Derivative
Face amount						$ 2,500,000,000.0
Senior notes due November 1, 2024 | Senior notes
Derivative
Face amount							$ 1,250,000,000
Stated interest rate	4.65%	[1]					4.65%
Treasury lock | Senior notes | Cash flow hedge contracts | Derivatives designated as hedging instruments | Portion of senior notes
Derivative
Derivative, notional amount							$ 1,000,000,000.00
Unrealized gains (losses) on cash flow hedges					$ 7,500,000
Treasury lock | Senior notes | Cash flow hedge contracts | Derivatives designated as hedging instruments | Portion of senior notes | Interest expense
Derivative
Unrealized gains (losses) on cash flow hedges	$ 5,200,000
Gain reclassified from accumulated OCI into income, effective portion	$ 200,000		$ 200,000	$ 400,000

[1] The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.

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Derivative Instruments and Hedging Activities - Derivative Instrument Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Derivative
Gains (losses) in accumulated OCI on derivatives (effective portion)	$ 697	$ 13,969	$ 1,141	$ 12,131
Gains (losses) reclassified from accumulated OCI into income (effective portion)	963	(1,305)	3,081	(2,684)
Derivatives Designated as Hedging Instruments
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	963	(1,305)	3,081	(2,684)
Derivatives Designated as Hedging Instruments | Accumulated OCI
Derivative
Gains (losses) in accumulated OCI on derivatives (effective portion)	697	13,969	1,141	12,131
Derivatives Designated as Hedging Instruments | Revenues
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	397	(1,425)	1,365	(2,906)
Derivatives Designated as Hedging Instruments | Costs of revenues
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	377	(69)	1,338	(156)
Derivatives Designated as Hedging Instruments | Interest expense
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	189	189	378	378
Derivatives Designated as Hedging Instruments | Other expense (income), net
Derivative
Gains (losses) recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	(158)	(1,442)	(229)	(1,453)
Derivatives Not Designated as Hedging Instruments | Other expense (income), net
Derivative
Gains (losses) recognized in income	$ 3,237	$ 5,295	$ 3,676	$ 5,131

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Derivative Instruments and Hedging Activities - Schedule of Notional Amount (Details) - Derivatives Designated as Hedging Instruments - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2017	Jun. 30, 2017
Purchase | Other foreign currency hedge contracts
Derivative
Derivative, notional amount	$ 144,442	$ 165,563
Purchase | Cash flow hedge contracts
Derivative
Derivative, notional amount	25,923	19,305
Sell | Other foreign currency hedge contracts
Derivative
Derivative, notional amount	155,260	118,504
Sell | Cash flow hedge contracts
Derivative
Derivative, notional amount	$ 85,466	$ 128,672
Maximum
Derivative
Remaining maturity	13 months	10 months

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Derivative Instruments and Hedging Activities - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Asset derivatives fair value	$ 4,474	$ 5,931
Liability derivatives fair value	415	1,275
Other current assets
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Asset derivatives fair value	4,474	5,931
Other current liabilities
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Liability derivatives fair value	415	1,275
Derivatives Designated as Hedging Instruments | Other current assets
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Foreign exchange contracts, other current assets	1,271	2,198
Asset derivatives fair value	1,271	2,198
Derivatives Designated as Hedging Instruments | Other current liabilities
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Foreign exchange contracts, other current liabilities	126	72
Liability derivatives fair value	126	72
Derivatives Not Designated as Hedging Instruments | Other current assets
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Foreign exchange contracts, other current assets	3,203	3,733
Asset derivatives fair value	3,203	3,733
Derivatives Not Designated as Hedging Instruments | Other current liabilities
Derivative Assets and Liabilities, at Fair Value, Net, by Balance Sheet Classification
Foreign exchange contracts, other current liabilities	289	1,203
Liability derivatives fair value	$ 289	$ 1,203

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Derivative Instruments and Hedging Activities - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss)
Beginning balance	$ 6,452	$ 751	$ 8,126	$ 1,210
Amount reclassified to income	(963)	1,305	(3,081)	2,684
Net change in unrealized gains or losses	697	13,969	1,141	12,131
Ending balance	$ 6,186	$ 16,025	$ 6,186	$ 16,025

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Derivative Instruments and Hedging Activities - Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Derivatives - Assets
Derivative - Assets, Gross Amounts of Derivatives	$ 4,474	$ 5,931
Derivatives - Assets, Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	0	0
Derivatives - Assets, Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets	4,474	5,931
Derivatives - Assets, Financial Instruments	(415)	(1,275)
Derivatives - Assets, Cash Collateral Received	0	0
Derivatives - Assets, Net Amount	4,059	4,656
Derivatives - Liabilities
Derivatives - Liabilities, Gross Amounts of Derivatives	(415)	(1,275)
Derivatives - Liabilities, Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	0	0
Derivatives - Liabilities, Net Amount of Derivatives Presented in the Condensed Consolidated Balance Sheets	(415)	(1,275)
Derivatives - Liabilities, Financial Instruments	415	1,275
Derivatives - Liabilities, Cash Collateral Received	0	0
Derivatives - Liabilities, Net Amount	$ 0	$ 0

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Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Related Party Transactions [Abstract]
Total revenues	$ 455	$ 8	$ 457	$ 8
Total purchases	542	$ 226	1,246	$ 583
Receivable balance, related parties	$ 500		$ 500

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Segment Reporting and Geographic Information - Additional Information (Details)	3 Months Ended		6 Months Ended
	Dec. 31, 2017 customer	Dec. 31, 2016 customer	Dec. 31, 2017 customer segment	Dec. 31, 2016 customer	Jun. 30, 2017 customer
Segment Reporting Information
Number of reportable segments | segment			1
Number of customers with significant revenue	1	2	1	2
Segment percent of total revenues	100.00%	100.00%	100.00%	100.00%
Number of customers with significant accounts receivable balance	2		2		2
Customer One
Segment Reporting Information
Segment percent of total revenues	17.00%	31.00%	22.00%	30.00%
Customer Two
Segment Reporting Information
Segment percent of total revenues		13.00%		11.00%

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Segment Reporting and Geographic Information - Schedule of Revenue from External Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information
Revenues	$ 975,822	$ 876,885	$ 1,945,403	$ 1,627,558
Segment percent of total revenues	100.00%	100.00%	100.00%	100.00%
Korea
Segment Reporting Information
Revenues	$ 270,184	$ 96,846	$ 544,862	$ 231,935
Segment percent of total revenues	28.00%	11.00%	28.00%	14.00%
Taiwan
Segment Reporting Information
Revenues	$ 216,791	$ 336,058	$ 355,350	$ 609,750
Segment percent of total revenues	22.00%	38.00%	18.00%	37.00%
Japan
Segment Reporting Information
Revenues	$ 154,762	$ 67,855	$ 301,197	$ 172,639
Segment percent of total revenues	16.00%	8.00%	15.00%	11.00%
North America
Segment Reporting Information
Revenues	$ 149,042	$ 153,162	$ 278,292	$ 240,428
Segment percent of total revenues	15.00%	17.00%	14.00%	15.00%
Europe & Israel
Segment Reporting Information
Revenues	$ 82,158	$ 93,440	$ 165,663	$ 128,288
Segment percent of total revenues	8.00%	11.00%	9.00%	8.00%
China
Segment Reporting Information
Revenues	$ 66,460	$ 73,152	$ 234,799	$ 158,841
Segment percent of total revenues	7.00%	9.00%	12.00%	10.00%
Rest of Asia
Segment Reporting Information
Revenues	$ 36,425	$ 56,372	$ 65,240	$ 85,677
Segment percent of total revenues	4.00%	6.00%	4.00%	5.00%

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Segment Reporting and Geographic Information - Revenue from External Customers by Products and Services (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Revenue from External Customer
Revenues		$ 975,822	$ 876,885	$ 1,945,403	$ 1,627,558
Segment percent of total revenues		100.00%	100.00%	100.00%	100.00%
Wafer Inspection
Revenue from External Customer
Revenues		$ 400,584	$ 428,875	$ 790,004	$ 784,736
Segment percent of total revenues		41.00%	49.00%	41.00%	48.00%
Patterning
Revenue from External Customer
Revenues		$ 274,868	$ 223,796	$ 569,218	$ 396,409
Segment percent of total revenues		28.00%	26.00%	29.00%	24.00%
Global Service and Support
Revenue from External Customer
Revenues	[1]	$ 273,805	$ 217,249	$ 534,303	$ 425,235
Segment percent of total revenues	[1]	28.00%	24.00%	27.00%	26.00%
Other
Revenue from External Customer
Revenues		$ 26,565	$ 6,965	$ 51,878	$ 21,178
Segment percent of total revenues		3.00%	1.00%	3.00%	2.00%

[1] The Global Service and Support revenues includes service revenues as presented in the condensed consolidated statements of operations as well as certain product revenues, primarily revenues from the Company’s K-T Pro business.

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Segment Reporting and Geographic Information - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Revenues from External Customers and Long-Lived Assets
Long-lived assets	$ 281,634	$ 283,975
United States
Revenues from External Customers and Long-Lived Assets
Long-lived assets	186,104	191,096
Singapore
Revenues from External Customers and Long-Lived Assets
Long-lived assets	41,924	39,118
Israel
Revenues from External Customers and Long-Lived Assets
Long-lived assets	28,658	30,182
Europe
Revenues from External Customers and Long-Lived Assets
Long-lived assets	13,335	13,300
Rest of Asia
Revenues from External Customers and Long-Lived Assets
Long-lived assets	$ 11,613	$ 10,279