Note 1 - Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2020 |
|
Allowance at beginning of year | $ 30.3 | $ 24.9 | $ 23.0 |
Provision for expected credit losses | 11.6 | 14.7 | 14.0 |
Write-offs, net of recoveries | (10.0) | (9.3) | (12.1) |
Allowance at end of year | 31.9 | 30.3 | 24.9 |
Spire Missouri [Member] | |||
Allowance at beginning of year | 22.6 | 18.1 | 14.9 |
Provision for expected credit losses | 11.2 | 11.1 | 12.7 |
Write-offs, net of recoveries | (8.9) | (6.6) | (9.5) |
Allowance at end of year | 24.9 | 22.6 | 18.1 |
Spire Alabama Inc [Member] | |||
Allowance at beginning of year | 6.6 | 5.5 | 6.3 |
Provision for expected credit losses | 0.3 | 3.1 | 0.9 |
Write-offs, net of recoveries | (0.6) | (2.0) | (1.7) |
Allowance at end of year | $ 6.3 | $ 6.6 | $ 5.5 |