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Goodwill and Other Intangible Assets - Goodwill (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) number | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Gross |  |  |  |  | $ 3,736,408
Accumulated impairment loss |  |  |  |  | (70,561)
Balance | $ 3,686,372 |  |  | $ 3,665,847 |
Acquired Goodwill | 46,711 |  |  | 30,180 |
Purchase price adjustments | 328 |  |  | (29,113) |
Goodwill, Written off Related to Sale of Business Unit |  |  |  | (79,409) |
Foreign currency translation | (59,629) |  |  | 98,867 |
Balance | 3,677,328 |  |  | 3,686,372 |
Disposal Group, Including Discontinued Operation, Goodwill, Current | 899,888 | $ 899,888 | $ 899,888 |  |
Number of Reporting Units |  | 7 | 7 |  |
Engineered Systems Segment [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Gross |  |  |  |  | 1,636,291
Accumulated impairment loss |  |  |  |  | (10,591)
Balance | 1,645,389 |  |  | 1,625,700 |
Goodwill Reallocation Due to Apergy | 3,546 |  |  |  |
Acquired Goodwill | 0 |  |  | 30,180 |
Purchase price adjustments | 328 |  |  | 6,826 |
Goodwill, Written off Related to Sale of Business Unit |  |  |  | (79,113) |
Foreign currency translation | (25,603) |  |  | 61,796 |
Balance | 1,623,660 |  |  | 1,645,389 |
Fluids Segment [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Gross |  |  |  |  | 1,563,938
Accumulated impairment loss |  |  |  |  | (59,970)
Balance | 1,504,284 |  |  | 1,503,968 |
Goodwill Reallocation Due to Apergy | 0 |  |  |  |
Acquired Goodwill | 36,303 |  |  | 0 |
Purchase price adjustments | 0 |  |  | (35,939) |
Goodwill, Written off Related to Sale of Business Unit |  |  |  | 0 |
Foreign currency translation | (32,985) |  |  | 36,255 |
Balance | 1,507,602 |  |  | 1,504,284 |
Refrigeration and Food Equipment Segment [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Gross |  |  |  |  | 536,179
Accumulated impairment loss |  |  |  |  | $ 0
Balance | 536,699 |  |  | 536,179 |
Goodwill Reallocation Due to Apergy | 0 |  |  |  |
Acquired Goodwill | 10,408 |  |  | 0 |
Purchase price adjustments | 0 |  |  | 0 |
Goodwill, Written off Related to Sale of Business Unit |  |  |  | (296) |
Foreign currency translation | (1,041) |  |  | 816 |
Balance | $ 546,066 |  |  | $ 536,699 |
Minimum [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Fair value discount rate, percent |  | 8.50% |  |  |
Maximum [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Fair value discount rate, percent |  | 9.50% |  |  |

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