Segment and Revenue Information - Other Segment Information From Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 84,728	$ 82,071
Interest expense	(15,705)	(11,399)
Net (loss) gain on financial instruments	(1,740)	2,696
Non-service component of retiree benefit (loss) gains	(3,218)	5,388
Loss from non-consolidated affiliates	(406)	(1,403)
Pre-tax earnings from continuing operations	26,569	65,085
Significant Reconciling Items
Segment Reporting Information [Line Items]
Interest expense	(510)	(307)
CAM
Segment Reporting Information [Line Items]
Depreciation and amortization	60,397	56,291
Interest expense	(10,022)	(7,705)
Revenue	34,200	34,995
ACMI Services
Segment Reporting Information [Line Items]
Depreciation and amortization	23,621	25,190
Interest expense	(4,958)	(3,378)
Revenue	(2,411)	22,165
All Other
Segment Reporting Information [Line Items]
Depreciation and amortization	710	590
Revenue	$ 654	$ 1,551