Financial Instruments and Derivatives Instruments (Details) (Fair value measured on a recurring basis, USD $) In Millions, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Total
Assets
Plan asset for deferred compensation	$ 4.4	$ 4.0
Total assets	4.4	4.0
Liabilities
Plan liability for deferred compensation	4.4	4.0
Contingent consideration	6.2	1.1
Total liabilities	10.6	5.1
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Plan asset for deferred compensation	4.4	4.0
Total assets	4.4	4.0
Liabilities
Plan liability for deferred compensation	4.4	4.0
Total liabilities	4.4	4.0
Significant Unobservable Inputs (Level 3)
Liabilities
Contingent consideration	6.2	1.1
Total liabilities	$ 6.2	$ 1.1