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Benefit Plans Benefit Plans (Detail 1) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, Beginning $ 966,728 $ 877,252  
Defined Benefit Plans, Service Cost and Other 31,025 28,100  
Defined Benefit Plan, Interest Cost 25,726 28,736  
Defined Benefit Plan, Actuarial Gain (Loss) (31,691) 76,932  
Defined Benefit Plan, Plan Amendments (3,440) (21,840)  
Defined Benefit Plan, Benefits Paid (50,823) (44,159)  
Foreign Currency Exchange Rate Changes, Benefit Obligation 20,117 21,707  
Benefit Obligation, Ending 957,642 966,728  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair Value of Plan Assets, Beginning 825,774 753,030  
Defined Benefit Plan, Actual Return on Plan Assets 54,553 57,298  
Defined Benefit Plan, Contributions by Employer 43,646 26,861  
Defined Benefit Plan, Contributions by Plan Participants 13,404 12,390  
Defined Benefits Plan, Benefits Paid and Other Charges (50,823) (44,159)  
Foreign Currency Exchange Rate Changes, Plan Assets 17,881 20,354  
Fair Value of Plan Assets, Ending 904,435 825,774  
Defined Benefit Plan, Funded Status of Plan (53,207) (140,954)  
United States Pension Plans of US Entity, Defined Benefit [Member]
      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, Beginning 156,804 146,492  
Defined Benefit Plans, Service Cost and Other 494 455  
Defined Benefit Plan, Interest Cost 5,755 6,093 6,422
Defined Benefit Plan, Actuarial Gain (Loss) (18,226) 10,184  
Defined Benefit Plan, Plan Amendments 0 0  
Defined Benefit Plan, Benefits Paid (6,680) (6,420)  
Foreign Currency Exchange Rate Changes, Benefit Obligation 0 0  
Benefit Obligation, Ending 138,147 156,804 146,492
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair Value of Plan Assets, Beginning 94,734 87,904  
Defined Benefit Plan, Actual Return on Plan Assets 12,073 9,501  
Defined Benefit Plan, Contributions by Employer 17,776 3,749  
Defined Benefit Plan, Contributions by Plan Participants 0 0  
Defined Benefits Plan, Benefits Paid and Other Charges (6,680) (6,420)  
Foreign Currency Exchange Rate Changes, Plan Assets 0 0  
Fair Value of Plan Assets, Ending 117,903 94,734 87,904
Defined Benefit Plan, Funded Status of Plan (20,244) (62,070)  
Foreign Pension Plans, Defined Benefit [Member]
      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, Beginning 798,657 717,503  
Defined Benefit Plans, Service Cost and Other 30,315 27,312  
Defined Benefit Plan, Interest Cost 19,566 22,104 24,637
Defined Benefit Plan, Actuarial Gain (Loss) (11,477) 68,807  
Defined Benefit Plan, Plan Amendments 293 (21,915)  
Defined Benefit Plan, Benefits Paid (43,271) (36,861)  
Foreign Currency Exchange Rate Changes, Benefit Obligation 20,117 21,707  
Benefit Obligation, Ending 814,200 798,657 717,503
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair Value of Plan Assets, Beginning 731,040 665,126  
Defined Benefit Plan, Actual Return on Plan Assets 42,480 47,797  
Defined Benefit Plan, Contributions by Employer 25,147 22,309  
Defined Benefit Plan, Contributions by Plan Participants 13,255 12,315  
Defined Benefits Plan, Benefits Paid and Other Charges (43,271) (36,861)  
Foreign Currency Exchange Rate Changes, Plan Assets 17,881 20,354  
Fair Value of Plan Assets, Ending 786,532 731,040 665,126
Defined Benefit Plan, Funded Status of Plan (27,668) (67,617)  
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit Obligation, Beginning 11,267 13,257  
Defined Benefit Plans, Service Cost and Other 216 333  
Defined Benefit Plan, Interest Cost 405 539 731
Defined Benefit Plan, Actuarial Gain (Loss) (1,988) (2,059)  
Defined Benefit Plan, Plan Amendments (3,733) 75  
Defined Benefit Plan, Benefits Paid (872) (878)  
Foreign Currency Exchange Rate Changes, Benefit Obligation 0 0  
Benefit Obligation, Ending 5,295 11,267 13,257
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair Value of Plan Assets, Beginning 0 0  
Defined Benefit Plan, Actual Return on Plan Assets 0 0  
Defined Benefit Plan, Contributions by Employer 723 803  
Defined Benefit Plan, Contributions by Plan Participants 149 75  
Defined Benefits Plan, Benefits Paid and Other Charges (872) (878)  
Foreign Currency Exchange Rate Changes, Plan Assets 0 0  
Fair Value of Plan Assets, Ending 0 0 0
Defined Benefit Plan, Funded Status of Plan $ (5,295) $ (11,267)