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v3.20.2

Derivative Instruments and Hedging Activities - Reconciliation to Balance Sheet (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Derivative [Line Items] |  |
Fair value of derivative assets presented above | $ 49.2 | $ 24.2
Netting of assets and liabilities with the same counterparty | (23.0) | (23.7)
Derivative asset after the effects of netting | 17.2 | 14.8
Fair value of derivative liabilities presented above | 99.5 | 78.5
Netting of assets and liabilities with the same counterparty | (23.0) | (23.7)
Derivative liability after the effects of netting | 76.5 | 54.8
Spire Missouri |  |
Derivative [Line Items] |  |
Fair value of derivative assets presented above | 6.6 | 0.0
Fair value of cash margin (payable) receivable offset with derivatives | (5.7) | 12.3
Netting of assets and liabilities with the same counterparty | (0.9) | (12.3)
Derivative asset after the effects of netting | 0.0 | 0.0
Fair value of derivative liabilities presented above | 0.9 | 12.3
Netting of assets and liabilities with the same counterparty | (0.9) | (12.3)
Derivative liability after the effects of netting | $ 0.0 | $ 0.0

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