Annual report pursuant to Section 13 and 15(d)

Quarterly Data (unaudited) (Details)

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Quarterly Data (unaudited) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Oct. 01, 2011
Jul. 02, 2011
Apr. 02, 2011
Dec. 31, 2010
Oct. 02, 2010
Jul. 03, 2010
Apr. 03, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Quarterly Data (unaudited) [Abstract]                      
Net sales $ 789.1 $ 876.7 $ 1,096.3 $ 985.9 $ 728.8 $ 815.4 $ 1,014.7 $ 844.4 $ 3,748.0 $ 3,403.3 $ 2,776.1
Gross margin 161.5 [1] 202.8 [1] 274.8 [1] 236.3 [1] 115.8 [1] 183.3 [1] 242.3 [1] 178.6 [1] 875.4 [1] 720.0 [1]  
Restructuring, exit and impairment charges 4.5 13.2 (0.3) 5.3 18.5 12.2 24.2 7.4 22.7 62.3 172.5
Extinguishment of Debt [Line Items]                      
Loss on early extinguishment of debt   (11.7) (0.9) (4.3)         (19.8) (5.7) (13.1)
Net earnings (loss) (29.6) 4.7 69.3 27.5 (104.1) (7.2) 13.7 (13.0) 71.9 (110.6) (586.2)
Basic earnings (loss) per common share:                      
Net earnings (loss) (in dollars per share) $ (0.33) $ 0.05 $ 0.78 $ 0.31 $ (1.17) $ (0.08) $ 0.15 $ (0.15) $ 0.81 $ (1.25) $ (6.63)
Diluted earnings (loss) per common share:                      
Net earnings (loss) (in dollars per share) $ (0.33) $ 0.05 $ 0.75 $ 0.30 $ (1.17) $ (0.08) $ 0.15 $ (0.15) $ 0.78 $ (1.25) $ (6.63)
Dividends declared (in dollars per share) $ 0.05 $ 0 $ 0 $ 0 $ 0.05 $ 0 $ 0 $ 0 $ 0.05 $ 0.05 $ 0.05
Common stock price (NYSE symbol: BC):                      
High (in dollars per share) $ 19.14 $ 21.91 $ 26.93 $ 25.51 $ 19.28 $ 17.49 $ 22.62 $ 16.20 $ 26.93 $ 22.62  
Low (in dollars per share) $ 13.46 $ 13.61 $ 17.09 $ 18.95 $ 14.86 $ 12.13 $ 12.39 $ 10.34 $ 13.46 $ 10.34  
Long-term Debt [Member]
                      
Extinguishment of Debt [Line Items]                      
Loss on early extinguishment of debt $ (2.9)       $ (0.2) $ (1.1) $ (4.1) $ (0.3) $ (19.8)    
[1] Gross margin is defined as Net sales less Cost of sales as presented in the Consolidated Statements of Operations.