Goodwill and Intangibles Finite-Lived Intangibles (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 27, 2020 |
Jun. 29, 2019 |
Mar. 30, 2019 |
Jun. 27, 2020 |
Jun. 29, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Goodwill | $ 415.4 | $ 410.7 | $ 415.4 | $ 410.7 | $ 415.0 | $ 377.3 | ||||||||||||||
| Acquisitions | $ 26.0 | 0.0 | ||||||||||||||||||
| Goodwill, Other Increase (Decrease) | 0.4 | 7.4 | ||||||||||||||||||
| Gross Amount | 870.5 | 871.0 | 870.5 | 871.0 | 871.2 | |||||||||||||||
| Accumulated Amortization | (303.4) | (271.6) | (303.4) | (271.6) | (287.7) | |||||||||||||||
| Amortization Expense for Intangibles | 8.0 | 7.8 | 16.0 | 15.7 | ||||||||||||||||
| Trade Names [Member] | ||||||||||||||||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Gross Amount | 165.6 | 165.8 | 165.6 | 165.8 | 165.8 | |||||||||||||||
| Accumulated Amortization | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||
| Customer Relationships [Member] | ||||||||||||||||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Gross Amount | 686.6 | [1] | 686.9 | 686.6 | [1] | 686.9 | 687.0 | |||||||||||||
| Accumulated Amortization | (290.2) | [1] | (258.8) | (290.2) | [1] | (258.8) | (274.6) | |||||||||||||
| Other Intangible Assets [Member] | ||||||||||||||||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Gross Amount | 18.3 | [1] | 18.3 | 18.3 | [1] | 18.3 | 18.4 | |||||||||||||
| Accumulated Amortization | (13.2) | [1] | (12.8) | (13.2) | [1] | (12.8) | (13.1) | |||||||||||||
| Propulsion [Member] | ||||||||||||||||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Goodwill | 14.3 | [2] | 14.6 | [3] | 14.3 | [2] | 14.6 | [3] | 14.5 | [2] | 14.6 | [3] | ||||||||
| Acquisitions | 0.0 | [3] | 0.0 | [2] | ||||||||||||||||
| Goodwill, Other Increase (Decrease) | (0.2) | [2] | 0.0 | [3] | ||||||||||||||||
| Gross Amount | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |||||||||||||||
| Accumulated Amortization | (0.5) | (0.5) | (0.5) | (0.5) | (0.5) | |||||||||||||||
| Parts and Accessories [Member] | ||||||||||||||||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Goodwill | 371.6 | [2] | 367.9 | [3] | 371.6 | [2] | 367.9 | [3] | 371.9 | [2] | 360.5 | [3] | ||||||||
| Acquisitions | 0.0 | [3] | 0.0 | [2] | ||||||||||||||||
| Goodwill, Other Increase (Decrease) | (0.3) | [2] | 7.4 | [3] | ||||||||||||||||
| Gross Amount | 617.0 | 617.5 | 617.0 | 617.5 | 617.6 | |||||||||||||||
| Accumulated Amortization | (96.7) | (66.8) | (96.7) | (66.8) | (81.9) | |||||||||||||||
| Boat [Member] | ||||||||||||||||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||||||||||||||||
| Goodwill | 29.5 | 28.2 | 29.5 | 28.2 | 28.6 | $ 2.2 | ||||||||||||||
| Acquisitions | $ 26.0 | 0.0 | ||||||||||||||||||
| Goodwill, Other Increase (Decrease) | 0.9 | 0.0 | ||||||||||||||||||
| Gross Amount | 252.5 | 252.5 | 252.5 | 252.5 | 252.6 | |||||||||||||||
| Accumulated Amortization | $ (206.2) | $ (204.3) | $ (206.2) | $ (204.3) | $ (205.3) | |||||||||||||||
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