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Goodwill and Intangibles Goodwill (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 26, 2020 | Sep. 28, 2019 | Dec. 31, 2019
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Beginning Balance | $ 415.0 |  | $ 377.3 |  |
Acquisitions | 0.0 |  | 26.0 |  |
Goodwill, Other Increase (Decrease) | 1.3 |  | 10.7 |  |
Goodwill, Ending Balance | 416.3 |  | 414.0 |  |
Goodwill, Impaired, Accumulated Impairment Loss | 0.0 |  | 0.0 |  | $ 0.0
Propulsion [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Beginning Balance | 14.5 | [1] | 14.6 | [2] |
Acquisitions | 0.0 | [1] | 0.0 | [2] |
Goodwill, Other Increase (Decrease) | 0.0 | [1] | (0.5) | [2] |
Goodwill, Ending Balance | 14.5 | [1] | 14.1 | [2] |
Parts and Accessories [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Beginning Balance | 371.9 | [1] | 360.5 | [2] |
Acquisitions | 0.0 | [1] | 0.0 | [2] |
Goodwill, Other Increase (Decrease) | 0.0 | [1] | 10.9 | [2] |
Goodwill, Ending Balance | 371.9 | [1] | 371.4 | [2] |
Boat [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, Beginning Balance | 28.6 |  | 2.2 |  |
Acquisitions | 0.0 |  | 26.0 |  |
Goodwill, Other Increase (Decrease) | 1.3 |  | 0.3 |  |
Goodwill, Ending Balance | $ 29.9 |  | $ 28.5 |  |
Customer Relationships [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Finite-Lived Intangible Asset, Weighted Average Remaining Useful Life | 12 years 4 months 24 days |  |  |  |
Other Intangible Assets [Member] |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Finite-Lived Intangible Asset, Weighted Average Remaining Useful Life | 11 years 2 months 12 days |  |  |  |
[1] | (A) In the 2019 Form 10-K, goodwill for Propulsion and Parts and Accessories were presented within the Marine Engine segment.
[2] | (A) In the 2019 Form 10-K, goodwill for Propulsion and Parts and Accessories were presented within the Marine Engine segment.

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