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Employee Benefit Plans (Details 2) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]      
Noncurrent liabilities $ (241,049,000) $ (385,062,000)  
Global Weighted-Average
     
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rates 4.20% 4.70% 5.40%
Expected long-term rates of return on plan assets 6.80% 6.90% 7.50%
Rates of compensation increase 2.80% 3.40% 3.30%
Expected long-term rates of return on plan assets for next year (as a percent) 7.00%    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rates 4.70% 4.20%  
Rates of compensation increase 3.30% 2.80%  
U.S. Plans
     
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 316,448,000 298,769,000  
Service cost 2,565,000 1,887,000 1,557,000
Interest cost 11,767,000 12,780,000 13,468,000
Plan participants' contributions 0 0  
Amendments 0 0  
Actuarial loss (28,158,000) 27,803,000  
Settlements/curtailments 0 (3,029,000)  
Benefits paid (19,051,000) (21,762,000)  
Effect of foreign currency 0 0  
Change in benefit obligation, Infrastructure transaction 0 0  
Other 0 0  
Benefit obligation at end of year 283,571,000 316,448,000 298,769,000
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 218,084,000 209,237,000  
Actual return on plan assets 31,931,000 27,429,000  
Employer contributions 2,615,000 6,254,000  
Plan participants' contributions 0 0  
Settlements/curtailments 0 (3,074,000)  
Benefits paid (19,051,000) (21,762,000)  
Effect of foreign currency 0 0  
Other 0 0  
Fair value of plan assets at end of year 233,579,000 218,084,000 209,237,000
Funded status at end of year (49,992,000) (98,364,000)  
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]      
Noncurrent assets 2,148,000 490,000  
Current liabilities (2,045,000) (2,531,000)  
Noncurrent liabilities (50,095,000) (96,323,000)  
Total accumulated other comprehensive loss before tax 109,348,000 159,094,000  
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]      
Net actuarial loss 109,081,000 158,579,000  
Prior service cost 267,000 515,000  
Total accumulated other comprehensive loss before tax 109,348,000 159,094,000  
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]      
Net actuarial loss 3,352,000    
Prior service cost 90,000    
Total 3,442,000    
Estimate of expected contributions in next fiscal year 7,800,000    
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]      
2014 24,500,000    
2015 17,600,000    
2016 18,000,000    
2017 17,700,000    
2018 17,800,000    
2019-2023 91,100,000    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rates 3.80% 4.40% 5.30%
Expected long-term rates of return on plan assets 7.50% 7.80% 7.80%
Rates of compensation increase 3.00% 3.00% 3.00%
Expected long-term rates of return on plan assets for next year (as a percent) 7.50%    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rates 4.70% 3.80%  
Rates of compensation increase 3.00% 3.00%  
Number of U.S. dollar-denomincated, AA-graded corporate bonds in yield curve universe 500    
Highest yield U.S. dollar-denominated, AA-graded corporate bonds excluded from yield curve univers (as a percent) 10.00%    
Lowest yield U.S. dollar-denominated, AA-graded corporate bonds excluded from yield curve universe (as a percent) 10.00%    
International Plans
     
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 1,068,750,000 968,218,000  
Service cost 3,457,000 3,418,000 4,350,000
Interest cost 42,707,000 46,174,000 48,768,000
Plan participants' contributions 689,000 830,000  
Amendments (394,000) 60,000  
Actuarial loss (8,245,000) 65,379,000  
Settlements/curtailments (1,619,000) (9,506,000)  
Benefits paid (46,269,000) (44,968,000)  
Effect of foreign currency 19,744,000 39,181,000  
Change in benefit obligation, Infrastructure transaction (120,115,000) 0  
Other 0 (36,000)  
Benefit obligation at end of year 958,705,000 1,068,750,000 968,218,000
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 783,059,000 714,163,000  
Actual return on plan assets 68,535,000 58,194,000  
Employer contributions 30,258,000 29,713,000  
Plan participants' contributions 689,000 830,000  
Settlements/curtailments (1,028,000) (3,885,000)  
Benefits paid (46,269,000) (44,968,000)  
Benefits paid (45,207,000) (43,954,000)  
Effect of foreign currency 11,455,000 27,998,000  
Other (76,850,000) 0  
Fair value of plan assets at end of year 770,911,000 783,059,000 714,163,000
Funded status at end of year (187,794,000) (285,691,000)  
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]      
Noncurrent assets 3,894,000 5,892,000  
Current liabilities (534,000) (1,048,000)  
Noncurrent liabilities (191,154,000) (290,535,000)  
Total accumulated other comprehensive loss before tax 401,300,000 469,949,000  
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]      
Net actuarial loss 400,726,000 467,438,000  
Prior service cost 574,000 2,511,000  
Total accumulated other comprehensive loss before tax 401,300,000 469,949,000  
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]      
Net actuarial loss 14,224,000    
Prior service cost 190,000    
Total 14,414,000    
Estimate of expected contributions in next fiscal year 30,600,000    
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]      
2014 44,000,000    
2015 45,700,000    
2016 47,700,000    
2017 49,400,000    
2018 51,500,000    
2019-2023 $ 285,500,000    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rates 4.30% 4.80% 5.50%
Expected long-term rates of return on plan assets 6.60% 6.70% 7.40%
Rates of compensation increase 2.80% 3.40% 3.30%
Expected long-term rates of return on plan assets for next year (as a percent) 6.80%    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rates 4.70% 4.30%  
Rates of compensation increase 3.40% 2.80%