SEGMENT REPORTING - Schedule of Segment Revenue and Net Before Tax Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Lease & related maintenance and rental revenue	$ 936	$ 979
Revenues	3,098	2,952
Earnings from continuing operations before taxes	154	203
Non-operating pension costs, net	(11)	(10)
Other items impacting comparability, net	(5)	25
Earnings from continuing operations before income taxes	114	201
Supply Chain Solutions
Segment Reporting Information [Line Items]
Revenues	1,302	1,201
Operating Segments \| Fleet Management Solutions
Segment Reporting Information [Line Items]
Revenues	1,455	1,503
Earnings from continuing operations before taxes	100	182
Operating Segments \| Fleet Management Solutions \| ChoiceLease
Segment Reporting Information [Line Items]
Lease & related maintenance and rental revenue	842	776
Operating Segments \| Fleet Management Solutions \| Commercial rental
Segment Reporting Information [Line Items]
Lease & related maintenance and rental revenue	231	304
Operating Segments \| Fleet Management Solutions \| SelectCare and other
Segment Reporting Information [Line Items]
Lease & related maintenance and rental revenue	178	182
Operating Segments \| Fleet Management Solutions \| Fuel services revenue
Segment Reporting Information [Line Items]
Revenues	204	241
Operating Segments \| Supply Chain Solutions
Segment Reporting Information [Line Items]
Revenues	1,302	1,201
Earnings from continuing operations before taxes	64	17
Operating Segments \| Dedicated Transportation Solutions
Segment Reporting Information [Line Items]
Revenues	563	454
Earnings from continuing operations before taxes	18	29
Eliminations
Segment Reporting Information [Line Items]
Revenues	(222)	(206)
Earnings from continuing operations before taxes	(28)	(25)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Unallocated Central Support Services	(14)	(15)
Intangible amortization expense	(11)	(9)
Non-operating pension costs, net	(11)	(10)
Other items impacting comparability, net	$ (4)	$ 32

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The aggregate amount provided for estimated restructuring charges, asset impairments and other charges during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

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Segment Reporting, Earnings Before Tax, Before Reconciling Items

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Costs not attributable to any reportable segment which remain unallocated. This includes the costs for investor relations, public affairs and certain executive compensation.

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Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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