Restructuring and Other Charges (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Restructuring reserve
Net pre-tax restructuring charges	$ 1.7	$ 1.1
2011 Actions | Danfoss Socla S.A.S
Restructuring reserve
Balance at the beginning of the period	0.4
Net pre-tax restructuring charges	0.5
Utilization and foreign currency impact	(0.3)
Balance at the ending of the period	0.6
Severance | 2011 Actions | Danfoss Socla S.A.S
Restructuring reserve
Balance at the beginning of the period	0.4
Net pre-tax restructuring charges	0.5
Utilization and foreign currency impact	(0.3)
Balance at the ending of the period	$ 0.6