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Revenues - Major Products and Services in Reportable Segments (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 4,540,029 | $ 5,158,557 | $ 4,845,872
Process and analytical instrumentation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,199,167 | 2,393,587 | 2,120,448
Aerospace and power |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,257,104 | 1,420,465 | 1,365,028
Automation and engineered solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,083,758 | 1,344,505 | 1,360,396
EIG |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,989,928 | 3,322,881 | 3,028,959
EIG | Process and analytical instrumentation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,199,167 | 2,393,587 | 2,120,448
EIG | Aerospace and power |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 790,761 | 929,294 | 908,511
EIG | Automation and engineered solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0 | 0 | 0
EMG |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,550,101 | 1,835,676 | 1,816,913
EMG | Process and analytical instrumentation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0 | 0 | 0
EMG | Aerospace and power |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 466,343 | 491,171 | 456,517
EMG | Automation and engineered solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 1,083,758 | $ 1,344,505 | $ 1,360,396

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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