Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Apr. 02, 2011	Jan. 01, 2011
Current Assets
Cash and cash equivalents	$ 769.5	$ 577.8	$ 906.9	$ 850.2	$ 1,914.4	$ 1,742.8
Accounts and notes receivable, net	1,829.9		1,553.2
Inventories, net	1,702.0		1,438.6
Other current assets	452.5		424.0
Total Current Assets	4,753.9		4,322.7
Property, Plant and Equipment, net	1,385.5		1,250.9
Goodwill and intangibles, net	10,694.5		10,037.1
Investment in Subsidiaries	0		0
Intercompany Receivables	0		0
Other Assets	280.3		338.3
Total Assets	17,114.2		15,949.0
Current Liabilities
Short-term borrowings	1,336.7		0.2
Current maturities of long-term debt	208.6		526.4
Accounts payable and accrued expenses	3,125.0		2,741.9
Total Current Liabilities	4,670.3		3,268.5
Intercompany Payables	0		0
Long-Term Debt	2,728.9		2,925.8
Other Liabilities	2,451.1		2,687.9
Accumulated other comprehensive (loss)	(270.0)		(349.2)
Other Shareowners' Equity	7,474.4		7,352.8
Non-controlling interests	59.5		63.2
Total Shareowners' Equity	7,263.9		7,066.8
Total Liabilities and Shareowners' Equity	17,114.2		15,949.0
Parent Stanley Black & Decker, Inc.
Current Assets
Cash and cash equivalents	14.5		56.2	(12.7)		(5.0)
Accounts and notes receivable, net	62.9		97.8
Inventories, net	154.4		117.2
Other current assets	54.9		90.7
Total Current Assets	286.7		361.9
Property, Plant and Equipment, net	212.7		193.1
Goodwill and intangibles, net	148.8		181.9
Investment in Subsidiaries	11,617.6		10,196.8
Intercompany Receivables	0		0
Other Assets	66.8		35.8
Total Assets	12,332.6		10,969.5
Current Liabilities
Short-term borrowings	1,308.4		0
Current maturities of long-term debt	204.0		523.8
Accounts payable and accrued expenses	155.5		382.3
Total Current Liabilities	1,667.9		906.1
Intercompany Payables	1,242.9		1,369.9
Long-Term Debt	2,228.2		1,722.2
Other Liabilities	(10.8)		(32.3)
Accumulated other comprehensive (loss)	(270.0)		(349.2)
Other Shareowners' Equity	7,474.4		7,352.8
Non-controlling interests	0		0
Total Shareowners' Equity	7,204.4		7,003.6
Total Liabilities and Shareowners' Equity	12,332.6		10,969.5
The Black & Decker Corporation
Current Assets
Cash and cash equivalents	1.6		1.4	7.8		3.5
Accounts and notes receivable, net	0		0
Inventories, net	0		0
Other current assets	0		10.4
Total Current Assets	1.6		11.8
Property, Plant and Equipment, net	0		0
Goodwill and intangibles, net	1,623.5		1,623.5
Investment in Subsidiaries	4,198.8		3,978.4
Intercompany Receivables	9,177.1		9,210.6
Other Assets	31.3		55.2
Total Assets	15,032.3		14,879.5
Current Liabilities
Short-term borrowings	0		0
Current maturities of long-term debt	2.8		0
Accounts payable and accrued expenses	(19.7)		(0.8)
Total Current Liabilities	(16.9)		(0.8)
Intercompany Payables	9,246.1		8,502.6
Long-Term Debt	325.8		1,031.9
Other Liabilities	657.1		167.2
Accumulated other comprehensive (loss)	(698.8)		(242.4)
Other Shareowners' Equity	5,519.0		5,421.0
Non-controlling interests	0		0
Total Shareowners' Equity	4,820.2		5,178.6
Total Liabilities and Shareowners' Equity	15,032.3		14,879.5
Non-Guarantor Subsidiaries
Current Assets
Cash and cash equivalents	753.4		849.3	855.1		1,744.3
Accounts and notes receivable, net	1,767.0		1,455.4
Inventories, net	1,547.6		1,321.4
Other current assets	397.6		322.9
Total Current Assets	4,465.6		3,949.0
Property, Plant and Equipment, net	1,172.8		1,057.8
Goodwill and intangibles, net	8,922.2		8,231.7
Investment in Subsidiaries	0		0
Intercompany Receivables	9,547.3		8,700.4
Other Assets	182.2		247.3
Total Assets	24,290.1		22,186.2
Current Liabilities
Short-term borrowings	28.3		0.2
Current maturities of long-term debt	1.8		2.6
Accounts payable and accrued expenses	2,989.2		2,360.4
Total Current Liabilities	3,019.3		2,363.2
Intercompany Payables	8,235.4		8,038.5
Long-Term Debt	174.9		171.7
Other Liabilities	1,804.8		2,553.0
Accumulated other comprehensive (loss)	(33.2)		(168.1)
Other Shareowners' Equity	11,029.4		9,164.7
Non-controlling interests	59.5		63.2
Total Shareowners' Equity	11,055.7		9,059.8
Total Liabilities and Shareowners' Equity	24,290.1		22,186.2
Eliminations
Current Assets
Cash and cash equivalents	0		0	0		0
Accounts and notes receivable, net	0		0
Inventories, net	0		0
Other current assets	0		0
Total Current Assets	0		0
Property, Plant and Equipment, net	0		0
Goodwill and intangibles, net	0		0
Investment in Subsidiaries	(15,816.4)		(14,175.2)
Intercompany Receivables	(18,724.4)		(17,911.0)
Other Assets	0		0
Total Assets	(34,540.8)		(32,086.2)
Current Liabilities
Short-term borrowings	0		0
Current maturities of long-term debt	0		0
Accounts payable and accrued expenses	0		0
Total Current Liabilities	0		0
Intercompany Payables	(18,724.4)		(17,911.0)
Long-Term Debt	0		0
Other Liabilities	0		0
Accumulated other comprehensive (loss)	732.0		410.5
Other Shareowners' Equity	(16,548.4)		(14,585.7)
Non-controlling interests	0		0
Total Shareowners' Equity	(15,816.4)		(14,175.2)
Total Liabilities and Shareowners' Equity	$ (34,540.8)		$ (32,086.2)