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Earnings (Loss) per Common Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 29, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Oct. 01, 2011 | Jul. 02, 2011 | Apr. 02, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) from continuing operations | $ (16.1) | $ 22.5 | $ 94.0 | $ 47.0 | $ (25.4) | $ 8.5 | $ 74.5 | $ 33.0 | $ 147.4 | $ 90.6 | $ (64.0)
Net loss from discontinued operations, net of tax | (59.2) | (20.5) | (10.4) | (7.3) | (4.2) | (3.8) | (5.2) | (5.5) | (97.4) | (18.7) | (46.6)
Net earnings (loss) | $ (75.3) | $ 2.0 | $ 83.6 | $ 39.7 | $ (29.6) | $ 4.7 | $ 69.3 | $ 27.5 | $ 50.0 | $ 71.9 | $ (110.6)
Weighted average outstanding shares - basic (in shares) |  |  |  |  |  |  |  |  | 89.8 | 89.3 | 88.7
Dilutive effect of common stock equivalents (in shares) |  |  |  |  |  |  |  |  | 2.6 | 2.9 | 0
Weighted average outstanding shares - diluted (in shares) |  |  |  |  |  |  |  |  | 92.4 | 92.2 | 88.7
Basic earnings (loss) per common share |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | $ (0.18) | $ 0.25 | $ 1.05 | $ 0.52 | $ (0.28) | $ 0.10 | $ 0.83 | $ 0.37 | $ 1.64 | $ 1.02 | $ (0.72)
Discontinuing operations (in dollars per share) | $ (0.66) | $ (0.23) | $ (0.12) | $ (0.08) | $ (0.05) | $ (0.05) | $ (0.05) | $ (0.06) | $ (1.08) | $ (0.21) | $ (0.53)
Net earnings (loss) (in dollars per share) | $ (0.84) | $ 0.02 | $ 0.93 | $ 0.44 | $ (0.33) | $ 0.05 | $ 0.78 | $ 0.31 | $ 0.56 | $ 0.81 | $ (1.25)
Diluted earnings (loss) per common share |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | $ (0.18) | $ 0.24 | $ 1.02 | $ 0.51 | $ (0.28) | $ 0.09 | $ 0.81 | $ 0.36 | $ 1.59 | $ 0.98 | $ (0.72)
Discontinuing operations (in dollars per share) | $ (0.66) | $ (0.22) | $ (0.12) | $ (0.08) | $ (0.05) | $ (0.04) | $ (0.06) | $ (0.06) | $ (1.05) | $ (0.20) | $ (0.53)
Net earnings (loss) (in dollars per share) | $ (0.84) | $ 0.02 | $ 0.90 | $ 0.43 | $ (0.33) | $ 0.05 | $ 0.75 | $ 0.30 | $ 0.54 | $ 0.78 | $ (1.25)
Outstanding options | 8.2 |  |  |  | 9.3 |  |  |  | 8.2 | 9.3 |
Exercisable on December 31 | 5.5 |  |  |  | 5.1 |  |  |  | 5.5 | 5.1 |
Anti-dilutive securities (in shares) |  |  |  |  |  |  |  |  | 2.2 | 3.0 |

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