CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Income Statement [Abstract]
Net Sales	$ 3,147.4	$ 3,761.3	$ 6,276.8	$ 7,094.9
Costs and Expenses
Cost of sales	2,134.7	2,461.5	4,241.0	4,689.5
Selling, general and administrative	713.0	776.2	1,450.8	1,536.8
Provision for credit losses	19.0	6.1	29.7	24.4
Other, net	86.9	62.2	161.8	127.6
Gain on sale of business	0.0	(17.2)	0.0	(17.2)
Restructuring charges	27.9	8.5	31.8	17.2
Interest expense	57.3	72.4	117.0	146.8
Interest income	(2.5)	(12.1)	(12.6)	(28.7)
Costs and Expenses	3,036.3	3,357.6	6,019.5	6,496.4
Earnings before income taxes and equity interest	111.1	403.7	257.3	598.5
Income tax (benefit) expense	(117.3)	51.6	(104.4)	76.3
Net earnings before equity interest	228.4	352.1	361.7	522.2
Share of net earnings of equity method investment	10.3	5.3	10.1	5.6
Net earnings	238.7	357.4	371.8	527.8
Less: Net earnings attributable to non-controlling interests	0.3	1.1	0.2	1.6
Net earnings attributable to Stanley Black & Decker, Inc.	238.4	356.3	371.6	526.2
Less: Preferred stock dividends	4.7
Net Earnings Attributable to Common Shareowners	233.7	356.3	366.9	526.2
Total Comprehensive Income Attributable to Common Shareowners	$ 336.5	$ 355.6	$ 210.9	$ 526.5
Earnings per share of common stock:
Basic (in shares)	$ 1.52	$ 2.41	$ 2.41	$ 3.56
Diluted (in shares)	1.52	2.37	2.39	3.50
Dividends per share of common stock (in dollars per share)	$ 0.69	$ 0.66	$ 1.38	$ 1.32
Weighted Average Shares Outstanding (in thousands):
Basic (in shares)	153,330	148,099	152,011	147,982
Diluted (in shares)	154,154	150,358	153,290	150,139
Preferred Stock Dividends, Income Statement Impact	$ 4.7	$ 0.0	$ 4.7	$ 0.0