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Fair Value Measurements (Additional Information) (Detail) (USD $) In Millions, unless otherwise specified | Mar. 31, 2015
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Fair value of our revolving facility and senior debt | $ 944.7 us-gaap_DebtInstrumentFairValue
Carrying value of our revolving facility and senior debt | $ 906.3 iex_LongTermDebtCarryingValue
2.58% Senior Euro Notes, due June 2015 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Stated interest rate | 2.58%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = iex_SeniorEuroNotesMember
4.5% Senior Notes, due December 2020 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Stated interest rate | 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = iex_FourPointFivePercentageSeniorNotesMember
4.2% Senior Notes, due December 2021 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Stated interest rate | 4.20%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = iex_FourPointTwoPercentageSeniorNotesMember

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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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