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v3.20.2

Income Taxes - Significant Items in Net Deferred Tax Liability (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Spire |  |
Deferred tax assets: |  |
Reserves not currently deductible | $ 24.8 | $ 31.4
Pension and other postretirement benefits | 108.3 | 102.7
Goodwill | 0.0 | 0.0
Operating losses | 170.4 | 162.2
Regulatory amount due to customers, net | 36.1 | 46.5
Other | 44.7 | 20.0
Deferred tax assets | 384.3 | 362.8
Less: Valuation allowance | (0.9) | (1.8)
Total deferred tax assets | 383.4 | 361.0
Deferred tax liabilities: |  |
Relating to property | (614.0) | (562.9)
Regulatory pension and other postretirement benefits | (138.4) | (135.9)
Other | (142.4) | (113.6)
Total deferred tax liabilities | (894.8) | (812.4)
Net deferred tax (liability) | (511.4) | (451.4)
Spire Missouri |  |
Deferred tax assets: |  |
Reserves not currently deductible | 16.7 | 21.2
Pension and other postretirement benefits | 78.5 | 78.7
Goodwill | 0.0 | 0.0
Operating losses | 36.0 | 51.1
Regulatory amount due to customers, net | 32.3 | 42.7
Other | 0.0 | 1.2
Deferred tax assets | 163.5 | 194.9
Less: Valuation allowance | (0.9) | (1.8)
Total deferred tax assets | 162.6 | 193.1
Deferred tax liabilities: |  |
Relating to property | (427.1) | (395.1)
Regulatory pension and other postretirement benefits | (107.4) | (111.7)
Other | (62.8) | (50.9)
Total deferred tax liabilities | (597.3) | (557.7)
Net deferred tax (liability) | (434.7) | (364.6)
Spire Alabama |  |
Deferred tax assets: |  |
Reserves not currently deductible | 5.9 | 6.2
Pension and other postretirement benefits | 0.0 | 0.0
Goodwill | 101.3 | 116.8
Operating losses | 111.3 | 94.2
Regulatory amount due to customers, net | 0.0 | 0.0
Other | 0.0 | 0.0
Deferred tax assets | 218.5 | 217.2
Less: Valuation allowance | 0.0 | 0.0
Total deferred tax assets | 218.5 | 217.2
Deferred tax liabilities: |  |
Relating to property | (151.4) | (129.3)
Regulatory pension and other postretirement benefits | (3.4) | (2.0)
Other | (4.4) | (4.6)
Total deferred tax liabilities | (159.2) | (135.9)
Net deferred tax asset | $ 59.3 | $ 81.3

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