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Business Segments and Geographic Information (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Oct. 02, 2011
Sep. 30, 2012
Oct. 02, 2011
Pre-Tax Income Reconciliation of Segments        
Total operating income from segments $ 81,931 $ 76,133 $ 235,359 $ 225,378
Unallocated Amount:        
General and Administrative Expenses (27,228) (25,922) (81,712) (86,420)
Interest Income (Expense), Net (18,955) (17,560) (56,811) (50,735)
Loss on early extinguishment of debt (8,462) 0 (8,462) 0
Income before income taxes, equity in earnings of affiliates and discontinued operations $ 27,286 $ 32,651 $ 88,374 $ 88,223