Revenue Recognition Revenue Recognition (Details) - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Mar. 31, 2019 |
Oct. 01, 2018 |
Sep. 30, 2018 |
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| 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% |
| X | ||||||||||
- Definition Contract with Custome rAsset Increase in Revenue No definition available.
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| X | ||||||||||
- Definition Remaining performance obligation expected to be recognized in the given period (as a percent) No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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