Pensions and Other Postretirement Benefits (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	4,081	3,992	8,149	8,057
Expected return on plan assets	(4,888)	(4,648)	(9,541)	(9,049)
Amortization of prior service cost	612	158	1,253	202
Amortization of losses	2,201	2,352	4,303	4,657
Curtailments and settlements	148	0	148	0
Net periodic benefit cost	2,154	1,854	4,312	3,867
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net service cost	849	757	1,676	1,534
Interest cost	2,679	2,686	5,241	5,563
Expected return on plan assets	(398)	(457)	(789)	(923)
Amortization of prior service cost	0	0	0	0
Amortization of losses	254	45	503	87
Curtailments and settlements	0	0	0	0
Net periodic benefit cost	$ 3,384	$ 3,031	$ 6,631	$ 6,261