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Goodwill and Intangibles Goodwill (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | $ 425.3 | $ 413.8 |
Acquisitions | 344.2 | 5.8 |
Impairments | 0.0 | 0.0 |
Adjustments | (1.1) | 6.7 |
Goodwill, Ending Balance | 768.4 | 426.3 |
Goodwill, Impaired, Accumulated Impairment Loss | 0.0 | 0.0 | $ 0.0
Marine Engine [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | 31.7 | 25.1 |
Acquisitions | 344.2 | 5.8 |
Impairments | 0.0 | 0.0 |
Adjustments | (0.5) | 1.4 |
Goodwill, Ending Balance | 375.4 | 32.3 |
Boat [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | 2.2 | 2.2 |
Acquisitions | 0.0 | 0.0 |
Impairments | 0.0 | 0.0 |
Adjustments | 0.0 | 0.0 |
Goodwill, Ending Balance | 2.2 | 2.2 |
Fitness [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | 391.4 | 386.5 |
Acquisitions | 0.0 | 0.0 |
Impairments | 0.0 | 0.0 |
Adjustments | (0.6) | 5.3 |
Goodwill, Ending Balance | $ 390.8 | $ 391.8 |

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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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