Supplemental Information (Other Receivables and Current Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Disclosure Text Block Supplement [Abstract]
Contract assets	$ 119.4	$ 55.9
Contract fulfillment costs	125.5	109.9
Derivative instruments	59.8	97.5
Current lease receivables	84.4	86.7
Other	161.8	132.9
Other receivables and current assets	$ 550.9	$ 482.9

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases, classified as current.

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Amount of current assets classified as other.

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Amount of other miscellaneous assets expected to be realized or consumed within one year or operating cycle, if longer.

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