Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition Revenue Recognition (Details)

v3.19.1
Revenue Recognition Revenue Recognition (Details) - USD ($)
6 Months Ended
Mar. 31, 2019
Oct. 01, 2018
Sep. 30, 2018
Revenue Recognition and Deferred Revenue [Abstract]      
Receivables from long-term manufacturing contracts $ 164,800,000 $ 122,200,000 $ 120,300,000
Increase (Decrease) in Contract with Customer, Asset 3.0    
Contract with Customer Asset Increase in Revenue 41.5    
Liabilities from long-term manufacturing contracts and advances 125,100,000   $ 125,900,000
Contract with Customer, Liability, Revenue Recognized 107.0    
Revenue, Remaining Performance Obligation, Amount $ 960,451,000    
Revenue, Remaining Performance Obligation, Percentage 85.00%