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Goodwill (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Sep. 30, 2025
Goodwill [Roll Forward]    
Balance at the beginning of the period   $ 1,181.7
Goodwill impairment   (359.0)
Adjustment for sale of business (1)   (18.2)
Goodwill, Other Increase (Decrease)   15.0
Foreign currency translation of non-USD functional currency subsidiary goodwill   6.0
Balance at the end of the period   825.5
Aviation    
Goodwill [Roll Forward]    
Balance at the beginning of the period   354.4
Goodwill impairment   0.0
Adjustment for sale of business (1)   0.0
Goodwill, Other Increase (Decrease)   0.0
Foreign currency translation of non-USD functional currency subsidiary goodwill   0.1
Balance at the end of the period   354.5
Land Segment    
Goodwill [Roll Forward]    
Balance at the beginning of the period   827.3
Goodwill impairment $ (359.0) (359.0)
Adjustment for sale of business (1)   (18.2)
Goodwill, Other Increase (Decrease)   15.0
Foreign currency translation of non-USD functional currency subsidiary goodwill   5.9
Balance at the end of the period   $ 471.0