CAPITAL STOCK - Reconciliation of Net Earnings Attributable to Common Shareholders and Weighted Average Shares Outstanding used to Calculate Basic and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Numerator
Net earnings attributable to Stanley Black & Decker, Inc.	$ 255.5	$ 248.9	$ 271.5	$ 189.4	$ 267.2	$ 234.1	$ 235.7	$ 166.8	$ 965.3	$ 903.8	$ 857.2
Net loss from discontinued operations	0.0	0.0	0.0	0.0	1.7	5.4	8.5	4.5	0.0	20.1	96.3
Net earnings	$ 255.5	$ 248.9	$ 271.5	$ 189.4	$ 265.5	$ 228.7	$ 227.2	$ 162.3	$ 965.3	$ 883.7	$ 760.9
Denominator
Basic earnings per share -- weighted-average shares									146,041	148,234	156,090
Potential Dilutive Securities That Could Be Included In Computation Of Earnings Per Share Amount									2,166	4,472	3,647
Diluted earnings per share -- weighted-average shares									148,207	152,706	159,737
Basic earnings per share of common stock:
Continuing operations (USD per share)	$ 1.74	$ 1.71	$ 1.87	$ 1.30	$ 1.83	$ 1.60	$ 1.59	$ 1.10	$ 6.61	$ 6.10	$ 5.49
Discontinued operations (USD per share)	0.00	0.00	0.00	0.00	(0.01)	(0.04)	(0.06)	(0.03)	0.00	(0.14)	(0.62)
Total basic earnings per share of common stock (USD per share)	1.74	1.71	1.87	1.30	1.82	1.57	1.53	1.07	6.61	5.96	4.87
Diluted earnings per share of common stock:
Continuing operations (USD per share)	1.71	1.68	1.84	1.28	1.78	1.55	1.54	1.07	6.51	5.92	5.37
Discontinued operations (USD per share)	0.00	0.00	0.00	0.00	(0.01)	(0.04)	(0.06)	(0.03)	0.00	(0.13)	(0.60)
Total diluted earnings per share of common stock (USD per share)	$ 1.71	$ 1.68	$ 1.84	$ 1.28	$ 1.77	$ 1.52	$ 1.49	$ 1.04	$ 6.51	$ 5.79	$ 4.76