Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation New Accounting Pronouncments Adopted (Details)

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Basis of Presentation New Accounting Pronouncments Adopted (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2018
Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Net benefit costs reclassified into other income (deductions), net $ (924) $ (2,084)
Accounting Standards Update 2016-16    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Cumulative tax adjustment for intra-entity transfers (4,176)  
Cost of Sales | Accounting Standards Update 2017-07    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Adoption of ASU 2017-07   714
Net benefit costs reclassified into other income (deductions), net   714
Selling Expense | Accounting Standards Update 2017-07    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Adoption of ASU 2017-07   226
Net benefit costs reclassified into other income (deductions), net   226
Administrative Expense | Accounting Standards Update 2017-07    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Adoption of ASU 2017-07   485
Net benefit costs reclassified into other income (deductions), net   $ 485
Retained Earnings | Accounting Standards Update 2016-16    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Cumulative tax adjustment for intra-entity transfers (4,176)  
Other Assets | Accounting Standards Update 2016-16    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Cumulative tax adjustment for intra-entity transfers $ (4,176)