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Guarantees, Other Contingent Liabilities, And Other Matters (Details)
 0 Months Ended 6 Months Ended 3 Months Ended
Sep. 09, 2011
USD ($)
Sep. 30, 2013
USD ($)
Sep. 30, 2012
USD ($)
Mar. 31, 2013
USD ($)
Sep. 09, 2011
EUR (€)
Nov. 15, 2005
EUR (€)
Sep. 30, 2013
Minimum [Member]
USD ($)
Sep. 30, 2013
Maximum [Member]
USD ($)
Jun. 30, 2013
Brazil [Member]
USD ($)
Sep. 30, 2013
Brazil [Member]
USD ($)
Guarantees, Other Contingent Liabilities, and Other Matters [Line Items]                    
Guarantor Obligations, Maximum Exposure, Undiscounted   $ 42,000,000                
Face amount of guarantee including unpaid accrued interest   46,000,000 16,000,000 20,000,000            
Fair value of the guarantees   4,000,000 2,000,000 4,000,000            
Other contingent liabilities   3,000,000                
Fines imposed by European Commission         30,000,000 30,000,000        
Charge Recorded To Accrue European Commission Fine 49,100,000                  
Accumulated interest on European Commission fine         5,900,000          
Collateralized guaranteed bank deposit   52,000,000                
Total amount of Brazilian IPI federal tax credits made available by court decision                   104,000,000
Brazilian federal taxes offset period                 5 years  
Net book value on tax credits from excise tax case after valuation allowance                   90,000,000
Gain on favorable outcome of excise tax case in Brazil   (81,619,000) 0           81,600,000  
Gain on favorable outcome of excise tax case in Brazil, after tax                 53,100,000  
Diluted earnings per share calculation based on gain from excise tax case in Brazil                 1.96  
Advances to suppliers current and non-current   110,000,000 152,000,000 199,000,000            
Valuation allowance amount related to advances to suppliers   42,000,000 63,000,000 54,000,000            
Provision for loss on uncollectible advances to suppliers   4,000,000 4,000,000              
Aggregate balance of recoverable value added tax credits   70,000,000 81,000,000 73,000,000            
Valuation allowance on recoverable value added tax credits   27,000,000 26,000,000 26,000,000            
Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits   21,000,000                
Reduced Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits   16,000,000                
Estimate of possible loss on remaining VAT audit assessment             $ 0 $ 16,000,000