Basis Of Presentation And Significant Accounting Policies	9 Months Ended
Sep. 30, 2011
Basis Of Presentation And Significant Accounting Policies [Abstract]
Basis Of Presentation And Significant Accounting Policies	1. Basis of Presentation and Significant Accounting Policies The Condensed Consolidated Financial Statements of IDEX Corporation ("IDEX" or the "Company") have been prepared in accordance with the instructions to Form 10-Q under the Securities Exchange Act of 1934, as amended. The statements are unaudited but include all adjustments, consisting only of recurring items, except as noted, that the Company considers necessary for a fair presentation of the information set forth herein. The results of operations for the three and nine months ended September 30, 2011 are not necessarily indicative of the results to be expected for the entire year. The condensed consolidated financial statements and Management's Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2010. *Adoption of New Accounting Standards* In October 2009, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2009-13, "Revenue Recognition (Topic 605) — Multiple-Deliverable Revenue Arrangements." ASU No. 2009-13 addresses the accounting for multiple-deliverable arrangements to enable vendors to account for products or services (deliverables) separately rather than as a combined unit. This guidance establishes a selling price hierarchy for determining the selling price of a deliverable, which is based on: (a) vendor-specific objective evidence; (b) third-party evidence; or (c) estimated selling price. This guidance also eliminates the residual method of allocation and requires that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method. ASU No. 2009-13 is effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. The Company's adoption of ASU No. 2009-13 effective January 1, 2011 did not have a material impact on its consolidated financial position, results of operations or cash flows. In December 2010, the FASB issued ASU No. 2010-29, Business Combinations (Topic 805), "Disclosure of Supplementary Pro Forma Information for Business Combinations." ASU No. 2010-29 requires revenues and earnings of the combined entity be disclosed as if the business combination occurred as of the beginning of the comparable prior annual reporting period. This ASU also requires additional disclosures about adjustments included in the reported pro forma revenues and earnings. The Company adopted the provisions of ASU No. 2010-29 prospectively for business combinations for which the acquisition date is on or after January 1, 2011. *New Accounting Pronouncements* In May 2011, the FASB issued ASU 2011-04, which is an update to Topic 820, "Fair Value Measurement." This update establishes common requirements for measuring fair value and related disclosures in accordance with accounting principles generally accepted in the United Sates and international financial reporting standards. This amendment did not require additional fair value measurements. ASU 2011-04 is effective for all interim and annual reporting periods beginning after December 15, 2011. ASU 2011-04 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company. In June 2011, the FASB issued ASU 2011-05, an update to Topic 220, "Comprehensive Income." This update eliminates the option of presenting the components of other comprehensive income as part of the statement of changes in stockholders' equity, requires consecutive presentation of the statement of net income and other comprehensive income and requires reclassification adjustments from other comprehensive income to net income to be shown on the financial statements. ASU 2011-05 is effective for all interim and annual reporting periods beginning after December 15, 2011. ASU 2011-05 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company. In September 2011, the FASB issued ASU 2011-08 which provides an entity the option to first assess qualitative factors to determine whether it is necessary to perform the current two-step test for goodwill impairment. If an entity believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. The revised standard is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. However, an entity can choose to adopt earlier even if its annual test date is before the issuance of the final standard, provided that the entity has not yet performed its 2011 annual impairment test or issued its financial statements. As of September 30, 2011, the Company did not elect to early adopt ASU 2011-08; however, the Company may elect to early adopt prior to its annual test date. ASU 2011-08 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company. In September 2011, the FASB issued ASU 2011-09 which requires enhanced disclosures around an employer's participation in multiemployer pension plans. The standard is intended to provide more information about an employer's financial obligations to a multiemployer pension plan to help financial statement users better understand the financial health of the significant plans in which the employer participates. ASU 2011-09 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company.

1. Basis of Presentation and Significant Accounting Policies

The Condensed Consolidated Financial Statements of IDEX Corporation ("IDEX" or the "Company") have been prepared in accordance with the instructions to Form 10-Q under the Securities Exchange Act of 1934, as amended. The statements are unaudited but include all adjustments, consisting only of recurring items, except as noted, that the Company considers necessary for a fair presentation of the information set forth herein. The results of operations for the three and nine months ended September 30, 2011 are not necessarily indicative of the results to be expected for the entire year.

The condensed consolidated financial statements and Management's Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2010.

Adoption of New Accounting Standards

In October 2009, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2009-13, "Revenue Recognition (Topic 605) — Multiple-Deliverable Revenue Arrangements." ASU No. 2009-13 addresses the accounting for multiple-deliverable arrangements to enable vendors to account for products or services (deliverables) separately rather than as a combined unit. This guidance establishes a selling price hierarchy for determining the selling price of a deliverable, which is based on: (a) vendor-specific objective evidence; (b) third-party evidence; or (c) estimated selling price. This guidance also eliminates the residual method of allocation and requires that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method. ASU No. 2009-13 is effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. The Company's adoption of ASU No. 2009-13 effective January 1, 2011 did not have a material impact on its consolidated financial position, results of operations or cash flows.

In December 2010, the FASB issued ASU No. 2010-29, Business Combinations (Topic 805), "Disclosure of Supplementary Pro Forma Information for Business Combinations." ASU No. 2010-29 requires revenues and earnings of the combined entity be disclosed as if the business combination occurred as of the beginning of the comparable prior annual reporting period. This ASU also requires additional disclosures about adjustments included in the reported pro forma revenues and earnings. The Company adopted the provisions of ASU No. 2010-29 prospectively for business combinations for which the acquisition date is on or after January 1, 2011.

New Accounting Pronouncements

In May 2011, the FASB issued ASU 2011-04, which is an update to Topic 820, "Fair Value Measurement." This update establishes common requirements for measuring fair value and related disclosures in accordance with accounting principles generally accepted in the United Sates and international financial reporting standards. This amendment did not require additional fair value measurements. ASU 2011-04 is effective for all interim and annual reporting periods beginning after December 15, 2011. ASU 2011-04 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company.

In June 2011, the FASB issued ASU 2011-05, an update to Topic 220, "Comprehensive Income." This update eliminates the option of presenting the components of other comprehensive income as part of the statement of changes in stockholders' equity, requires consecutive presentation of the statement of net income and other comprehensive income and requires reclassification adjustments from other comprehensive income to net income to be shown on the financial statements. ASU 2011-05 is effective for all interim and annual reporting periods beginning after December 15, 2011. ASU 2011-05 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company.

In September 2011, the FASB issued ASU 2011-08 which provides an entity the option to first assess qualitative factors to determine whether it is necessary to perform the current two-step test for goodwill impairment. If an entity believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. The revised standard is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. However, an entity can choose to adopt earlier even if its annual test date is before the issuance of the final standard, provided that the entity has not yet performed its 2011 annual impairment test or issued its financial statements. As of September 30, 2011, the Company did not elect to early adopt ASU 2011-08; however, the Company may elect to early adopt prior to its annual test date. ASU 2011-08 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company.

In September 2011, the FASB issued ASU 2011-09 which requires enhanced disclosures around an employer's participation in multiemployer pension plans. The standard is intended to provide more information about an employer's financial obligations to a multiemployer pension plan to help financial statement users better understand the financial health of the significant plans in which the employer participates. ASU 2011-09 is not expected to have a material impact on the consolidated financial position, results of operations or cash flows of the Company.