Summary of Significant Accounting Policies	6 Months Ended
Jun. 29, 2013
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading provider of a wide range of products for purifying, protecting and transporting critical materials used in processing and manufacturing in the microelectronics and other high-technology industries. Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation. Use of Estimates The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, and intangibles, accrued expenses and income taxes and related accounts, and 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 period. Actual results could differ from those estimates. Basis of Presentation In the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly, in conformity with accounting principles generally accepted in the United States of America. The condensed consolidated financial statements and notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2012. The results of operations for the six months ended June 29, 2013 are not necessarily indicative of the results to be expected for the full year. Fair Value of Financial Instruments The carrying value of accounts receivable and accounts payable approximates fair value due to the short maturity of those instruments. Recent Accounting Pronouncements In December 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-11, Amendments to Disclosures about Offsetting Assets and Liabilities. The objective of ASU No. 2011-11 is to provide enhanced disclosures that will enable users of its financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position. In January 2013, the FASB issued ASU No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, which clarifies what instruments and transactions are subject to the offsetting disclosure requirements established by ASU No. 2011-11. Derivative instruments accounted for in accordance with Accounting Standards Codification (ASC) 815, are subject to ASU No. 2011-11 disclosure requirements. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU Nos. 2011-11 and 2013-01 are effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU Nos. 2011-11 and 2013-01 in the first quarter of fiscal 2013. The disclosures associated with ASU Nos. 2011-11 and 2013-01 are included in note 5 to the Company’s condensed consolidated financial statements. In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income that amended ASU No. 2011-12 and ASU No. 2011-05. ASU No. 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either in the consolidated statements of operations or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU 2013-02 in the first quarter of fiscal 2013. The disclosures associated with ASU No. 2013-02 are included in the Company’s condensed consolidated statements of equity. Amounts reclassified out of accumulated other comprehensive income were not significant. Other ASUs issued not effective for the Company until after June 29, 2013 are not expected to have a material effect on the Company’s condensed consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading provider of a wide range of products for purifying, protecting and transporting critical materials used in processing and manufacturing in the microelectronics and other high-technology industries.

Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation.

Use of Estimates The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, and intangibles, accrued expenses and income taxes and related accounts, and 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 period. Actual results could differ from those estimates.

Basis of Presentation In the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly, in conformity with accounting principles generally accepted in the United States of America.

The condensed consolidated financial statements and notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2012. The results of operations for the six months ended June 29, 2013 are not necessarily indicative of the results to be expected for the full year.

Fair Value of Financial Instruments The carrying value of accounts receivable and accounts payable approximates fair value due to the short maturity of those instruments.

Recent Accounting Pronouncements

In December 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-11, Amendments to Disclosures about Offsetting Assets and Liabilities. The objective of ASU No. 2011-11 is to provide enhanced disclosures that will enable users of its financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position. In January 2013, the FASB issued ASU No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, which clarifies what instruments and transactions are subject to the offsetting disclosure requirements established by ASU No. 2011-11. Derivative instruments accounted for in accordance with Accounting Standards Codification (ASC) 815, are subject to ASU No. 2011-11 disclosure requirements. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU Nos. 2011-11 and 2013-01 are effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU Nos. 2011-11 and 2013-01 in the first quarter of fiscal 2013. The disclosures associated with ASU Nos. 2011-11 and 2013-01 are included in note 5 to the Company’s condensed consolidated financial statements.

In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income that amended ASU No. 2011-12 and ASU No. 2011-05. ASU No. 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either in the consolidated statements of operations or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. These amendments are disclosure related and will not have an impact on the Company’s financial position, results of operations, comprehensive income or cash flows. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. Accordingly, the Company adopted ASU 2013-02 in the first quarter of fiscal 2013. The disclosures associated with ASU No. 2013-02 are included in the Company’s condensed consolidated statements of equity. Amounts reclassified out of accumulated other comprehensive income were not significant.

Other ASUs issued not effective for the Company until after June 29, 2013 are not expected to have a material effect on the Company’s condensed consolidated financial statements.