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Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 55.7 | $ 19.3 | $ 19.3
Other comprehensive income (loss), net of tax [Abstract] |  |  |
Foreign currency translation adjustment | (4.0) | (4.6) | (1.8)
Pension liabilities adjustment | (1.5) | (0.8) | 2.9
Net unrealized gain or loss on available-for-sale securities | 2.7 | 0.2 | 0.6
Reclassification of adjustment for gains included in net income: |  |  |
Foreign currency translation adjustment (included in other income) | 0.0 | 0.0 | (0.1)
Periodic pension costs (included in compensation and benefits) | 0.3 | 0.2 | 0.8
Realized gain on available-for-sale securities (included in trading gains, net and interest income) | (5.4) | (0.1) | (8.3)
Income tax expense from reclassification adjustments (included in income tax expense) | 2.0 | (0.1) | 1.7
Reclassification adjustment for gains included in net income | (3.1) | 0.0 | (5.9)
Other comprehensive loss | (5.9) | (5.2) | (4.2)
Comprehensive income | $ 49.8 | $ 14.1 | $ 15.1

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