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Goodwill and Intangibles Goodwill (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2017 | Oct. 01, 2016 | Dec. 31, 2016
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | $ 413.8 | $ 298.7 |
Acquisitions | 5.8 | 115.0 |
Impairments | 0.0 | 0.0 |
Adjustments | 6.7 | (0.7) |
Goodwill, Ending Balance | 426.3 | 413.0 |
Goodwill Accumulated Impairment Loss | 0.0 | 0.0 | $ 0.0
Marine Engine [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | 25.1 | 26.2 |
Acquisitions | 5.8 | 0.0 |
Impairments | 0.0 | 0.0 |
Adjustments | 1.4 | (0.3) |
Goodwill, Ending Balance | 32.3 | 25.9 |
Boat [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | 2.2 | 0.0 |
Acquisitions | 0.0 | 2.5 |
Impairments | 0.0 | 0.0 |
Adjustments | 0.0 | 0.0 |
Goodwill, Ending Balance | 2.2 | 2.5 |
Fitness [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, Beginning Balance | 386.5 | 272.5 |
Acquisitions | 0.0 | 112.5 |
Impairments | 0.0 | 0.0 |
Adjustments | 5.3 | (0.4) |
Goodwill, Ending Balance | $ 391.8 | $ 384.6 |

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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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