Goodwill - Schedule of Changes in Carrying Amounts of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Jun. 30, 2023
Goodwill [Line Items]
Goodwill	$ 602.7	$ 603.1
Accumulated impairment losses	(59.5)	(59.5)
Total	543.2	543.6
Foreign currency translation	0.4
Commercial
Goodwill [Line Items]
Goodwill	387.0	387.1
Total	387.0	387.1
Foreign currency translation	0.1
Aviation
Goodwill [Line Items]
Goodwill	215.7	216.0
Accumulated impairment losses	(59.5)	(59.5)
Total	156.2	$ 156.5
Foreign currency translation	$ 0.3