Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition Narrative (Details)

v3.21.2
Revenue Recognition Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]      
Receivables from long-term manufacturing contracts $ 124.2   $ 138.1
Liabilities from long-term manufacturing contracts and advances 324.9   $ 189.1
Revenue recognized on long-term manufacturing contracts and advances liabilities $ 128.8 $ 104.7