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Business Segment Information - Schedule of Income (Loss) from Continuing operations by Product Lines and Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Operating income (loss): |  |  |  |
Operating income (loss) | $ 133.6 | $ 175.6 | $ 242.7 | $ 336.1
Interest expense, net of interest income | (20.7) | (11.7) | (32.5) | (23.2)
Miscellaneous other (expense) income | (5.8) | 1.2 | (6.2) |
Income before income taxes and earnings (losses) of unconsolidated affiliates | 107.1 | 165.1 | 204.0 | 312.9
Operating Segments | Access Equipment |  |  |  |
Operating income (loss): |  |  |  |
Operating income (loss) | 70.8 | 119.8 | 139.8 | 186.2
Operating Segments | Defense |  |  |  |
Operating income (loss): |  |  |  |
Operating income (loss) | 58.2 | 52.2 | 89.1 | 123.3
Operating Segments | Fire and Emergency |  |  |  |
Operating income (loss): |  |  |  |
Operating income (loss) | 20.5 | 36.6 | 51.5 | 76.5
Operating Segments | Commercial |  |  |  |
Operating income (loss): |  |  |  |
Operating income (loss) | 8.1 | 7.8 | 25.9 | 26.5
Corporate, Non-segment |  |  |  |
Operating income (loss): |  |  |  |
Operating income (loss) | $ (24.0) | $ (40.8) | $ (63.6) | $ (76.4)

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- Definition The net amount of operating interest income (expense). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.10) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
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