Summary of significant accounting policies - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |
---|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2023 |
Sep. 30, 2022 |
|
Accounting Policies [Abstract] | |||
Contract with customer, asset, after allowance for credit loss | $ 3.9 | $ 3.9 | $ 3.4 |
Contract with customer, liability | 1.9 | 1.9 | $ 3.5 |
Contract with customer, liability, revenue recognized | 1.4 | 2.7 | |
Revenue, remaining performance obligation, amount | $ 7.7 | $ 7.7 |
X | ||||||||||
- References No definition available.
|
X | ||||||||||
- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
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://www.xbrl.org/2003/role/disclosureRef
|
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
|