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Business Segments (Details 2) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Accounts receivable, net: |  |
Accounts receivable, net | $ 2,039.1 | $ 2,306.4
Total assets: |  |
Total assets | 4,972.9 | 4,880.5
Aviation Segment |  |
Accounts receivable, net: |  |
Accounts receivable, net | 574.2 | 685.0
Allowance for bad debt | 6.8 | 7.9
Marine segment |  |
Accounts receivable, net: |  |
Accounts receivable, net | 748.4 | 974.0
Allowance for bad debt | 9.9 | 8.4
Land Segment |  |
Accounts receivable, net: |  |
Accounts receivable, net | 716.5 | 647.4
Allowance for bad debt | 8.1 | 9.4
Operating Segments | Aviation Segment |  |
Total assets: |  |
Total assets | 1,606.9 | 1,635.9
Operating Segments | Marine segment |  |
Total assets: |  |
Total assets | 1,361.4 | 1,483.1
Operating Segments | Land Segment |  |
Total assets: |  |
Total assets | 1,802.3 | 1,570.6
Corporate |  |
Total assets: |  |
Total assets | $ 202.3 | $ 190.9

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