Environmental Matters (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2007 Former Manufacturing Plant in Italy [Member]	Sep. 25, 2011 OII Site [Member]	Aug. 30, 2001 OII Site [Member]	Sep. 25, 2011 Omega Site [Member]
Site Contingency [Line Items]
Number of former manufacturing plants where chemical compounds were discovered	1
Settlement offer received and not accepted			$ 9.3
Minimum number of insurers who provided reimbursement for defense costs		1
Approximate number of defendants in litigation matter				100
Approximate distance of plaintiff's facility from Omega Site (in miles)				1.5
Estimated volumetric share of wastes sent to Omega Site (in hundredths)				0.08%
Number of insurance carriers who have agreed to defend the Entity under a reservation of rights				1
Maximum volumetric share wastes sent to Omega Site (in hundredths)				0.10%