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Business Segment Information - Schedule of Identifiable Assets by Business Segments and by Geographical Segments (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Sep. 30, 2019
--- | --- | ---
Assets |  |  |
Assets |  | $ 5,556.2 | $ 5,566.3
Access Equipment | Europe, Africa and Middle East |  |  |
Assets |  |  |
Assets |  | 390.5 | 403.4
Operating Segments | Access Equipment |  |  |
Assets |  |  |
Assets |  | 3,043.7 | 2,973.2
Operating Segments | Access Equipment | United States |  |  |
Assets |  |  |
Assets |  | 2,295.8 | 2,317.2
Operating Segments | Access Equipment | Rest of the World |  |  |
Assets |  |  |
Assets | [1] | 357.4 | 252.6
Operating Segments | Defense |  |  |
Assets |  |  |
Assets |  | 1,039.2 | 889.7
Operating Segments | Defense | United States |  |  |
Assets |  |  |
Assets |  | 1,032.6 | 883.0
Operating Segments | Defense | Rest of the World |  |  |
Assets |  |  |
Assets |  | 6.6 | 6.7
Operating Segments | Fire and Emergency | United States |  |  |
Assets |  |  |
Assets |  | 569.1 | 587.9
Operating Segments | Commercial |  |  |
Assets |  |  |
Assets |  | 415.5 | 432.5
Operating Segments | Commercial | United States |  |  |
Assets |  |  |
Assets |  | 373.6 | 383.6
Operating Segments | Commercial | Rest of the World |  |  |
Assets |  |  |
Assets |  | 41.9 | 48.9
Corporate, Non-segment |  |  |
Assets |  |  |
Assets |  | 488.7 | 683.0
Corporate, Non-segment | United States |  |  |
Assets |  |  |
Assets | [2] | $ 488.7 | 597.6
Corporate, Non-segment | Rest of the World |  |  |
Assets |  |  |
Assets | [1] |  | $ 85.4
[1] | Control of a shared manufacturing facility in Mexico transferred to the access equipment segment effective October 1, 2019.
[2] | Primarily includes cash and short-term investments and the Company’s new global headquarters.

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