PARENT AND SUBSIDIARY DEBT GUARANTEES - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash (used in) provided by operating activities	$ 966.2	$ 998.9	$ 739.3
Investing Activities
Capital expenditures	(386.0)	(302.1)	(185.5)
Proceeds from sales of assets	9.6	29.4	11.0
Business acquisitions, net of cash acquired	(707.3)	(1,179.6)	(550.3)
Cash acquired from Black & Decker	0	0	949.4
Proceeds from sales of businesses, net of cash sold	1,260.6	27.1	0
Intercompany payables and receivables	0	0	0
Payments for (Proceeds from) Other Investing Activities	5.8	(39.1)	45.0
Net cash provided by (used in) by investing activities	182.7	(1,464.3)	269.6
Financing Activities
Payments on long-term debt	(1,422.3)	(403.2)	(515.8)
Proceeds from debt issuance, net of issuance costs	1,523.5	421.0	1,009.8
Net (repayments) borrowings on short-term borrowings	(19.0)	(199.4)	(263.6)
Stock purchase contract fees	(3.2)	(3.2)	(7.7)
Purchase of common stock for treasury	(1,073.9)	(11.1)	(4.9)
Net premium paid for equity option	(29.5)	(19.6)	(50.3)
Premium paid on debt extinguishment	(91.0)	0	0
Termination of interest rate swaps	58.2	0	0
Termination of forward starting interest rate swaps	(102.6)	0	(48.4)
Proceeds from issuances of common stock	126.4	119.6	396.1
Cash dividends on common stock	(304.0)	(275.9)	(201.6)
Intercompany payables and receivables	0	0	0
Net cash (used in) provided by financing activities	(1,337.4)	(371.8)	313.6
Effect of exchange rate changes on cash and cash equivalents	(2.4)	1.3	22.2
(Decrease) Increase in cash and cash equivalents	(190.9)	(835.9)	1,344.7
Cash and cash equivalents, beginning of year	906.9	1,742.8	398.1
Cash and cash equivalents, end of year	716.0	906.9	1,742.8
Parent Stanley Black & Decker, Inc.
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash (used in) provided by operating activities	(791.8)	(431.7)	(520.5)
Investing Activities
Capital expenditures	(63.0)	(61.9)	(38.1)
Proceeds from sales of assets	0.9	0	5.7
Business acquisitions, net of cash acquired	(453.8)	0	(457.1)
Cash acquired from Black & Decker			0
Proceeds from sales of businesses, net of cash sold	146.0	0
Intercompany payables and receivables	1,797.1	342.8	498.0
Payments for (Proceeds from) Other Investing Activities	3.8	(17.9)	(1.5)
Net cash provided by (used in) by investing activities	1,431.0	263.0	7.0
Financing Activities
Payments on long-term debt	(771.3)	0	(512.7)
Proceeds from debt issuance, net of issuance costs	1,523.5	420.1	1,009.8
Net (repayments) borrowings on short-term borrowings	0	0	(88.7)
Stock purchase contract fees	(3.2)	(3.2)	(7.7)
Purchase of common stock for treasury	(1,073.9)	(11.1)	(4.9)
Net premium paid for equity option	(29.5)	(19.6)	(50.3)
Premium paid on debt extinguishment	(14.9)
Termination of interest rate swaps	37.6
Termination of forward starting interest rate swaps	(102.6)		(48.4)
Proceeds from issuances of common stock	126.4	119.6	396.1
Cash dividends on common stock	(304.0)	(275.9)	(193.9)
Intercompany payables and receivables	0	0	0
Net cash (used in) provided by financing activities	(611.9)	229.9	499.3
Effect of exchange rate changes on cash and cash equivalents	0	0	0
(Decrease) Increase in cash and cash equivalents	27.3	61.2	(14.2)
Cash and cash equivalents, beginning of year	56.2	(5.0)	9.2
Cash and cash equivalents, end of year	83.5	56.2	(5.0)
The Black & Decker Corporation
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash (used in) provided by operating activities	(67.9)	(92.6)	55.4
Investing Activities
Capital expenditures	0	0	(2.6)
Proceeds from sales of assets	0	0	0.9
Business acquisitions, net of cash acquired	(2.5)	0	(15.1)
Cash acquired from Black & Decker			1.8
Proceeds from sales of businesses, net of cash sold	10.0	0
Intercompany payables and receivables	1,686.8	1,563.6	453.5
Payments for (Proceeds from) Other Investing Activities	2.0	(18.1)	46.5
Net cash provided by (used in) by investing activities	1,696.3	1,545.5	485.0
Financing Activities
Payments on long-term debt	(650.0)	(400.0)	0
Proceeds from debt issuance, net of issuance costs	0	0	0
Net (repayments) borrowings on short-term borrowings	0	0	(175.0)
Stock purchase contract fees	0	0	0
Purchase of common stock for treasury	0	0	0
Net premium paid for equity option	0	0	0
Premium paid on debt extinguishment	(76.1)
Termination of interest rate swaps	20.6
Termination of forward starting interest rate swaps	0		0
Proceeds from issuances of common stock	0	0	0
Cash dividends on common stock	0	0	(7.7)
Intercompany payables and receivables	(922.8)	(1,055.0)	(354.2)
Net cash (used in) provided by financing activities	(1,628.3)	(1,455.0)	(536.9)
Effect of exchange rate changes on cash and cash equivalents	0	0	0
(Decrease) Increase in cash and cash equivalents	0.1	(2.1)	3.5
Cash and cash equivalents, beginning of year	1.4	3.5	0
Cash and cash equivalents, end of year	1.5	1.4	3.5
Non-Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash (used in) provided by operating activities	1,825.9	1,523.2	1,204.4
Investing Activities
Capital expenditures	(323.0)	(240.2)	(144.8)
Proceeds from sales of assets	8.7	29.4	4.4
Business acquisitions, net of cash acquired	(251.0)	(1,179.6)	(78.1)
Cash acquired from Black & Decker			947.6
Proceeds from sales of businesses, net of cash sold	1,104.6	27.1
Intercompany payables and receivables	0	0	0
Payments for (Proceeds from) Other Investing Activities	0	(3.1)	0
Net cash provided by (used in) by investing activities	539.3	(1,366.4)	729.1
Financing Activities
Payments on long-term debt	(1.0)	(3.2)	(3.1)
Proceeds from debt issuance, net of issuance costs	0	0.9	0
Net (repayments) borrowings on short-term borrowings	(19.0)	(199.4)	0.1
Stock purchase contract fees	0	0	0
Purchase of common stock for treasury	0	0	0
Net premium paid for equity option	0	0	0
Premium paid on debt extinguishment	0
Termination of interest rate swaps	0
Termination of forward starting interest rate swaps	0		0
Proceeds from issuances of common stock	0	0	0
Cash dividends on common stock	0	0	0
Intercompany payables and receivables	(2,561.1)	(851.4)	(597.3)
Net cash (used in) provided by financing activities	(2,581.1)	(1,053.1)	(600.3)
Effect of exchange rate changes on cash and cash equivalents	(2.4)	1.3	22.2
(Decrease) Increase in cash and cash equivalents	(218.3)	(895.0)	1,355.4
Cash and cash equivalents, beginning of year	849.3	1,744.3	388.9
Cash and cash equivalents, end of year	631.0	849.3	1,744.3
Eliminations
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash (used in) provided by operating activities	0	0	0
Investing Activities
Capital expenditures	0	0	0
Proceeds from sales of assets	0	0	0
Business acquisitions, net of cash acquired	0	0	0
Cash acquired from Black & Decker			0
Proceeds from sales of businesses, net of cash sold	0	0
Intercompany payables and receivables	(3,483.9)	(1,906.4)	(951.5)
Payments for (Proceeds from) Other Investing Activities	0	0	0
Net cash provided by (used in) by investing activities	(3,483.9)	(1,906.4)	(951.5)
Financing Activities
Payments on long-term debt	0	0	0
Proceeds from debt issuance, net of issuance costs	0	0	0
Net (repayments) borrowings on short-term borrowings	0	0	0
Stock purchase contract fees	0	0	0
Purchase of common stock for treasury	0	0	0
Net premium paid for equity option	0	0	0
Premium paid on debt extinguishment	0
Termination of interest rate swaps	0
Termination of forward starting interest rate swaps	0		0
Proceeds from issuances of common stock	0	0	0
Cash dividends on common stock	0	0	0
Intercompany payables and receivables	3,483.9	1,906.4	951.5
Net cash (used in) provided by financing activities	3,483.9	1,906.4	951.5
Effect of exchange rate changes on cash and cash equivalents	0	0	0
(Decrease) Increase in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of year	0	0	0
Cash and cash equivalents, end of year	$ 0	$ 0	$ 0