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Business Segments - Balance Sheet Items (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts receivable, net: |  |
Accounts receivable, net | $ 1,415.9 | $ 2,891.9
Allowance for credit losses | 48.6 | 35.5
Total assets: |  |
Total assets | 4,881.0 | 5,992.4
Aviation segment |  |
Accounts receivable, net: |  |
Accounts receivable, net | 412.6 | 1,098.2
Allowance for credit losses | 33.0 | 14.6
Land segment |  |
Accounts receivable, net: |  |
Accounts receivable, net | 590.9 | 863.2
Allowance for credit losses | 8.3 | 2.8
Marine segment |  |
Accounts receivable, net: |  |
Accounts receivable, net | 412.5 | 930.5
Allowance for credit losses | 4.3 | 18.0
Operating Segments | Aviation segment |  |
Total assets: |  |
Total assets | 1,817.4 | 2,416.5
Operating Segments | Land segment |  |
Total assets: |  |
Total assets | 1,881.6 | 2,089.4
Operating Segments | Marine segment |  |
Total assets: |  |
Total assets | 812.6 | 1,189.7
Corporate |  |
Total assets: |  |
Total assets | $ 369.3 | $ 296.8

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