CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Income Statement [Abstract]
Net Sales	[1]	$ 4,263.2	$ 3,850.2	$ 12,761.2	$ 10,127.0
Costs and Expenses
Cost of sales	[1]	2,871.7	2,473.9	8,261.8	6,714.9
Selling, general and administrative	[1]	895.2	731.3	2,645.1	2,182.1
Provision for credit losses	[1]	3.6	7.6	8.2	37.3
Other, net	[1]	39.5	74.3	152.3	236.1
Loss on sales of businesses	[1]	0.0	0.0	3.6	0.0
Restructuring charges	[1]	5.8	42.8	22.1	74.6
Interest expense	[1]	45.8	52.7	139.8	169.7
Interest income	[1]	(2.3)	(2.0)	(7.9)	(14.6)
Costs and Expenses	[1]	3,859.3	3,380.6	11,225.0	9,400.1
Earnings before income taxes and equity interest	[1]	403.9	469.6	1,536.2	726.9
Income tax expense (benefit)	[1]	(0.4)	78.4	192.8	(26.0)
Net earnings before equity interest	[1]	404.3	391.2	1,343.4	752.9
Share of net earnings of equity method investment	[1]	9.8	4.0	16.0	14.1
Net earnings	[1]	414.1	395.2	1,359.4	767.0
Less: Net (losses) earnings attributable to non-controlling interests	[1]	(0.1)	0.3	(1.7)	0.5
Net earnings attributable to Stanley Black & Decker, Inc.	[1]	414.2	394.9	1,361.1	766.5
Less: Preferred stock dividends and beneficial conversion feature	[1]	0.0	9.4	14.2	14.8
Net Earnings Attributable to Common Shareowners	[1]	414.2	385.5	1,346.9	751.7
Add: Contract adjustment payments accretion	[1]	0.4	0.1	0.9	1.5
Net Earnings Attributable to Common Shareowners - Diluted	[1]	414.6	385.6	1,347.8	753.2
Total Comprehensive Income Attributable to Common Shareowners	[1]	$ 326.4	$ 465.0	$ 1,185.8	$ 675.2
Earnings per share of common stock:
Basic (in dollars per share)	[1]	$ 2.60	$ 2.47	$ 8.50	$ 4.90
Diluted (in dollar per share)	[1]	2.51	2.37	8.17	4.65
Dividends per share of common stock (in dollars per share)	[1]	$ 0.79	$ 0.70	$ 2.19	$ 2.08
Weighted Average Shares Outstanding:
Basic (in shares)	[1]	159,444,000	156,370,000	158,494,000	153,345,000
Diluted (in shares)	[1]	165,336,000	162,675,000	164,900,000	162,098,000

[1] See Note A, Significant Accounting Policies - Restatement, for discussion regarding the impacts of the Restatement.