Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Net sales	$ 4,067.7	$ 4,070.4	$ 4,000.3
Operating earnings	962.3	956.1	882.1
Interest expense	(49.0)	(50.4)	(52.4)
Other income (expense) – net	8.8	4.2	(7.8)
Earnings before income taxes and equity earnings	922.1	909.9	821.9
Income tax expense	(211.8)	(214.4)	(250.9)
Earnings before equity earnings	710.3	695.5	571.0
Equity earnings, net of tax	0.9	0.7	1.2
Net earnings	711.2	696.2	572.2
Net earnings attributable to noncontrolling interests	(17.7)	(16.3)	(14.5)
Net earnings attributable to Snap-on Incorporated	$ 693.5	$ 679.9	$ 557.7
Net earnings per share attributable to Snap-on Incorporated:
Basic (in dollars per share)	$ 12.59	$ 12.08	$ 9.72
Diluted (in dollars per share)	$ 12.41	$ 11.87	$ 9.52
Weighted-average shares outstanding:
Basic (in shares)	55.1	56.3	57.4
Effect of dilutive securities (in shares)	0.8	1.0	1.2
Diluted (in shares)	55.9	57.3	58.6
Product And Services, Excluding Financial Services
Net sales	$ 3,730.0	$ 3,740.7	$ 3,686.9
Cost of goods sold	(1,886.0)	(1,870.7)	(1,861.0)
Gross profit	1,844.0	1,870.0	1,825.9
Operating expenses	(1,127.6)	(1,144.0)	(1,161.3)
Operating earnings	716.4	726.0	664.6
Financial Service
Net sales	337.7	329.7	313.4
Cost of goods sold	(91.8)	(99.6)	(95.9)
Operating earnings	$ 245.9	$ 230.1	$ 217.5