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CAPITAL STOCK - Assumptions used in Valuation of Pre-merger Black and Decker Stock Options (Detail) (Stock options, USD $)
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Average expected volatility 35.60% 38.40% 31.40%
Dividend yield 2.80% 2.50% 2.20%
Risk-free interest rate 0.80% 1.10% 2.70%
Expected term 5 years 6 months 5 years 6 months 6 years 3 months
Fair value per option $ 17.47 $ 18.29 $ 16.68
The Black & Decker Corporation
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Average expected volatility     32.00%
Dividend yield     0.70%
Risk-free interest rate     1.40%
Expected term     2 years 10 months 24 days
Fair value per option     $ 18.72