Discontinued Operations (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
May 31, 2011	Apr. 01, 2012	Apr. 03, 2011
Discontinued Operations (Textual) [Abstract]
Period to provide certain transitional services as part of asset purchase agreement		up to 18 months
Cash consideration received for sale of ESG business	$ 480.0
Restructuring expenses related to the exit of the ESG business			$ 23.8

Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

No definition available.

Name:	us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration