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Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Earnings from Continuing Operations | $ (90.4) | [1] | $ 84.7 | [1] | $ 118.8 | [1] | $ 74.2 | [1] | $ 16.7 | $ 84.1 | $ 108.4 | $ 63.4 | $ 187.3 | [1] | $ 272.6 | $ 230.9
Net Earnings (Loss) from Discontinued Operations, Net of Tax | (26.5) |  | (5.7) |  | 0.6 |  | (9.3) |  | 1.0 | 1.3 | (0.3) | 1.4 | (40.9) |  | 3.4 | 10.5
Net Earnings | $ (116.9) |  | $ 79.0 |  | $ 119.4 |  | $ 64.9 |  | $ 17.7 | $ 85.4 | $ 108.1 | $ 64.8 | $ 146.4 |  | $ 276.0 | $ 241.4
Weighted Average Outstanding Shares - Basic (in Shares) |  |  |  |  |  |  |  |  |  |  |  |  | 89.4 |  | 91.2 | 93.0
Dilutive Effect of Common Stock Equivalents (in Shares) |  |  |  |  |  |  |  |  |  |  |  |  | 0.7 |  | 0.8 | 1.3
Weighted Average Outstanding Shares - Diluted (in Shares) |  |  |  |  |  |  |  |  |  |  |  |  | 90.1 |  | 92.0 | 94.3
Basic Earnings Per Common Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing Operations (in Dollars Per Share) | $ (1.02) |  | $ 0.95 |  | $ 1.32 |  | $ 0.82 |  | $ 0.19 | $ 0.93 | $ 1.18 | $ 0.69 | $ 2.10 |  | $ 2.99 | $ 2.49
Discontinued Operations (in Dollars Per Share) | (0.30) |  | (0.06) |  | 0.01 |  | (0.10) |  | 0.01 | 0.01 | 0.00 | 0.02 | (0.46) |  | 0.04 | 0.11
Net Earnings (in Dollars per Share) | (1.32) |  | 0.89 |  | 1.33 |  | 0.72 |  | 0.20 | 0.94 | 1.18 | 0.71 | 1.64 |  | 3.03 | 2.60
Diluted Earnings Per Common Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing Operations (in Dollars per Share) | (1.02) |  | 0.94 |  | 1.31 |  | 0.81 |  | 0.18 | 0.92 | 1.17 | 0.68 | 2.08 |  | 2.96 | 2.45
Discontinued Operations (in Dollars per Share) | (0.30) |  | (0.06) |  | 0.01 |  | (0.10) |  | 0.01 | 0.01 | 0.00 | 0.02 | (0.46) |  | 0.04 | 0.11
Net Earnings (in Dollars per Share) | $ (1.32) |  | $ 0.88 |  | $ 1.32 |  | $ 0.71 |  | $ 0.19 | $ 0.93 | $ 1.17 | $ 0.70 | $ 1.62 |  | $ 3.00 | $ 2.56
[1] | (D) In the fourth quarter of 2017, Gross margin and Net earnings from continuing operations include $8.4 million and $13.5 million, respectively, of charges for costs related to field campaigns pertaining to certain Cybex products designed prior to the acquisition. Refer to Note 13 – Commitments and Contingencies for further details.

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