Exit And Disposal Activities (Components Of Exit And Disposal Accrual Activity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 8.4
Additions	3.7
Usage	(3.4)
Ending balance	8.7
Severance Costs [Member] | Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	3.6
Additions	3.6
Usage	(2.5)
Ending balance	4.7
Severance Costs [Member] | Snap-On Tools Group [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	0.6
Additions	(0.1)
Usage	(0.1)
Ending balance	0.4
Severance Costs [Member] | Repair Systems & Information Group [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	3.8
Additions	0.2
Usage	(0.7)
Ending balance	3.3
Facility-Related Costs [Member] | Commercial & Industrial Group [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	0.4
Additions
Usage	(0.1)
Ending balance	$ 0.3