Pension Plans and Postretirement Benefits (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011	Apr. 19, 2011
Defined Benefit Plan Disclosure [Line Items]
Plan liabilities and expense measured at discounted rate	5.50%		5.50%
Pension Plans and Postretirement Benefits (Textual) [Abstract]
Pretax voluntary contribution			$ 92.8	$ 69.0
Percentage of employees under defined benefit pension plan			27.00%
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension expense	1.7	1.5	5.0	5.2
Plan liabilities and expense measured at discounted rate	6.15%		6.15%		5.90%
Pension Benefits - U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension expense	1.7	1.5	5.0	5.2
Projected long-term rate of return on plan assets			8.25%	8.25%
U.S. Government Cost Accounting Standards [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension expense allocated to contracts pursuant to U.S. Government Cost Accounting Standards	$ 3.1	$ 2.9	$ 9.0	$ 8.9