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Acquisitions (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Business Acquisition [Line Items] |  |  |  |
Current Assets | $ 30,287,000 |  | $ 30,287,000 |
Property, Plant, and Equipment | 6,642,000 |  | 6,642,000 |
Goodwill Acquired |  |  | 157,874,000 |
Goodwill - tax deductible | 33,183,000 |  | 33,183,000 |
Intangibles | 100,524,000 |  | 100,524,000 |
Current Liabilities | 20,249,000 |  | 20,249,000 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | 258,674,000 | $ 216,398
Goodwill and intangible assets | 258,398,000 |  | 258,398,000 |
Other assets and deferred charges | 16,404,000 |  | 16,404,000 |
Goodwill Acquired During Period, Non-deductible for Income Tax |  |  | 124,691,000 |
Revenue [Abstract] |  |  |  |
As reported | 1,748,256,000 | $ 1,825,345,000 | 4,903,370,000 | 5,360,808,000
Pro forma | 1,752,155,000 | 1,845,416,000 | 4,924,687,000 | 5,428,757,000
Net earnings [Abstract] |  |  |  |
As reported | 200,300,000 | 206,006,000 | 501,345,000 | 509,796,000
Pro forma | 203,133,000 | 206,333,000 | 512,190,000 | 511,425,000
Trademarks [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangibles | 6,631,000 |  | $ 6,631,000 |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 15 years |
Customer-Related Intangible Assets |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangibles | 79,795,000 |  | $ 79,795,000 |
Unpatented Technologies [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangibles | 14,098,000 |  | 14,098,000 |
All-Flo [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill - tax deductible |  | 20,567,000 |  | 20,567,000
Intangibles |  | 14,980,000 |  | 14,980,000
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  | 39,954,000
Belanger [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill - tax deductible |  | 98,084,000 |  | 98,084,000
Intangibles |  | $ 77,000,000 |  | 77,000,000
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  | $ 175,350,000
Systech [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill Acquired |  |  | 91,493,000 |
Intangibles | 76,100,000 |  | 76,100,000 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | 161,830,000 |
Soft-Pak [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill - tax deductible | 33,183,000 |  | 33,183,000 |
Intangibles | 12,800,000 |  | 12,800,000 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | 45,500,000 |
Em-tec [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill Acquired |  |  | 19,572,000 |
Intangibles | 8,344,000 |  | 8,344,000 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | 30,396,000 |
Solaris [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill Acquired |  |  | 11,693,000 |
Intangibles | $ 3,280,000 |  | 3,280,000 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | $ 18,605,000 |
Minimum [Member] | Customer-Related Intangible Assets |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 10 years |
Minimum [Member] | Unpatented Technologies [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 6 years |
Minimum [Member] | All-Flo [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 13 years
Minimum [Member] | Belanger [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 9 years
Maximum [Member] | Customer-Related Intangible Assets |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 12 years |
Maximum [Member] | Unpatented Technologies [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 9 years |
Maximum [Member] | All-Flo [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 15 years
Maximum [Member] | Belanger [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 15 years

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