Exit and Disposal Activities - Recorded Costs Associated with Exit and Disposal Activities (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 6.4	$ 16.5
Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	2.9	8.9
Snap-on Tools Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.5	7.2
Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	2.9	0.4
Financial Services [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.1
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	4.4	10.9
Cost of Goods Sold [Member] | Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	2.5	3.6
Cost of Goods Sold [Member] | Snap-on Tools Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.2	7.1
Cost of Goods Sold [Member] | Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	1.7	0.2
Operating Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	1.9	5.6
Operating Expenses [Member] | Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.4	5.3
Operating Expenses [Member] | Snap-on Tools Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.3	0.1
Operating Expenses [Member] | Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	1.2	0.2
Operating Expenses [Member] | Financial Services [Member]
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 0.1