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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 | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Operating income (loss): |  |  |  |  |
Operating income (loss) |  | $ 203.8 | $ 118.6 | $ 440.5 | $ 361.3
Interest expense, net of interest income |  | (11.7) | (11.7) | (34.3) | (44.2)
Miscellaneous other income (expense) |  | 0.4 | 1.5 | 2.0 | (4.7)
Income before income taxes and losses of unconsolidated affiliates |  | 192.5 | 108.4 | 408.2 | 312.4
Operating Segments | Access Equipment |  |  |  |  |
Operating income (loss): |  |  |  |  |
Operating income (loss) | [1] | 113.0 | 33.5 | 218.4 | 173.3
Operating Segments | Defense |  |  |  |  |
Operating income (loss): |  |  |  |  |
Operating income (loss) | [2] | 59.8 | 41.4 | 148.1 | 132.1
Operating Segments | Fire & Emergency |  |  |  |  |
Operating income (loss): |  |  |  |  |
Operating income (loss) | [2] | 44.5 | 46.2 | 127.0 | 96.1
Operating Segments | Commercial |  |  |  |  |
Operating income (loss): |  |  |  |  |
Operating income (loss) |  | 29.6 | 23.8 | 60.3 | 49.7
Corporate, Non-segment |  |  |  |  |
Operating income (loss): |  |  |  |  |
Operating income (loss) |  | $ (43.1) | $ (26.3) | $ (113.3) | $ (89.9)
[1] | Results for the three and nine months ended June 30, 2021 include a $0.2 million and $3.4 million charge for restructuring, respectively. The Company incurred additional charges of $1.1 million and $8.1 million of other costs related to restructuring plans in the three and nine months ended June 30, 2021, respectively.
[2] | Results have been reclassified to reflect the move of the airport snow removal vehicle business from the Fire & Emergency segment to the Defense segment.

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