Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Net sales	$ 4,601.7	$ 3,942.2	$ 4,067.7
Operating earnings	1,123.5	880.5	962.3
Interest expense	(53.1)	(54.0)	(49.0)
Other income (expense) – net	16.5	8.7	8.8
Earnings before income taxes and equity earnings	1,086.9	835.2	922.1
Income tax expense	(247.0)	(189.1)	(211.8)
Earnings before equity earnings	839.9	646.1	710.3
Equity earnings, net of tax	1.5	0.3	0.9
Net earnings	841.4	646.4	711.2
Net earnings attributable to noncontrolling interests	(20.9)	(19.4)	(17.7)
Net earnings attributable to Snap-on Incorporated	$ 820.5	$ 627.0	$ 693.5
Net earnings per share attributable to Snap-on Incorporated:
Basic (in dollars per share)	$ 15.22	$ 11.55	$ 12.59
Diluted (in dollars per share)	$ 14.92	$ 11.44	$ 12.41
Weighted-average shares outstanding:
Basic (in shares)	53.9	54.3	55.1
Effect of dilutive securities (in shares)	1.1	0.5	0.8
Diluted (in shares)	55.0	54.8	55.9
Product And Services, Excluding Financial Services
Net sales	$ 4,252.0	$ 3,592.5	$ 3,730.0
Cost of goods sold	(2,141.2)	(1,844.0)	(1,886.0)
Gross profit	2,110.8	1,748.5	1,844.0
Operating expenses	(1,259.3)	(1,116.6)	(1,127.6)
Operating earnings	851.5	631.9	716.4
Financial Service
Net sales	349.7	349.7	337.7
Cost of goods sold	(77.7)	(101.1)	(91.8)
Operating earnings	$ 272.0	$ 248.6	$ 245.9