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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Net income | $ 161.6 | $ 144.2 | $ 136.9
Cash flow hedging derivative instruments: |  |  |
Net hedging gain (loss) arising during the period | 11.5 | (4.0) | (5.5)
Reclassification adjustment for loss included in net income | 0.0 | 1.1 | 4.4
Net unrealized gain (loss) on cash flow hedging derivative instruments | 11.5 | (2.9) | (1.1)
Defined benefit pension and other postretirement benefit plans: |  |  |
Net actuarial gain arising during the period | 0.0 | 0.0 | 0.1
Amortization of actuarial loss (gain) included in net periodic pension and postretirement benefit cost | 0.4 | (0.3) | 0.4
Net defined benefit pension and other postretirement benefit plans | 0.4 | (0.3) | 0.5
Loss on available for sale securities | (0.1) | 0.0 | 0.0
Other Comprehensive Income (Loss), Before Tax | 11.8 | (3.2) | (0.6)
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income (Loss) | 4.4 | (1.0) | (0.3)
Other Comprehensive Income (Loss), Net of Tax | 7.4 | (2.2) | (0.3)
Comprehensive Income | 169.0 | 142.0 | 136.6
Spire Missouri |  |  |
Net income | 113.0 | 105.9 | 105.3
Cash flow hedging derivative instruments: |  |  |
Net hedging gain (loss) arising during the period | 0.1 | 0.0 | (1.2)
Reclassification adjustment for loss included in net income | (0.2) | 0.5 | 0.9
Net unrealized gain (loss) on cash flow hedging derivative instruments | (0.1) | 0.5 | (0.3)
Defined benefit pension and other postretirement benefit plans: |  |  |
Net actuarial gain arising during the period | 0.0 | 0.0 | 0.1
Amortization of actuarial loss (gain) included in net periodic pension and postretirement benefit cost | 0.3 | (0.3) | 0.4
Net defined benefit pension and other postretirement benefit plans | 0.3 | (0.3) | 0.5
Loss on available for sale securities | (0.1) | (0.1) | 0.0
Other Comprehensive Income (Loss), Before Tax | 0.1 | 0.1 | 0.2
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income (Loss) | 0.0 | 0.2 | 0.0
Other Comprehensive Income (Loss), Net of Tax | 0.1 | (0.1) | 0.2
Comprehensive Income | $ 113.1 | $ 105.8 | $ 105.5

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