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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 income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
Segment Reporting (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Lease and rental revenues									$ 3,508,136	$ 3,237,685	$ 3,170,952
Revenues	$ 2,258,349	$ 2,158,061	$ 2,089,338	$ 1,903,467	$ 1,931,146	$ 1,840,897	$ 1,788,028	$ 1,736,983	8,409,215	7,297,054	6,758,138
EBT:
Earnings before tax, before reconciling items									455,557	418,634	490,659
Earnings from continuing operations before income taxes	$ 111,338	$ 116,140	$ 98,283	$ 48,100	$ 78,577	$ 94,492	$ 80,854	$ 60,622	373,861	314,545	407,256
Non-operating pension costs									(7,541)	(27,741)	(37,593)
Restructuring charges and fees, net and other items									(25,107)	(21,405)	(5,074)
Eliminations
Revenue:
Revenues									(577,469)	(469,514)	(427,955)
EBT:
Earnings before tax, before reconciling items									(63,594)	(53,275)	(50,148)
Segment Reconciling Items
EBT:
Unallocated Central Support Services									(49,048)	(48,128)	(40,736)
Non-operating pension costs									(7,541)	(27,741)	(29,943)
Restructuring charges and fees, net and other items									(25,107)	(28,220)	(12,724)
Fleet Management Solutions
Revenue:
Revenues									4,677,758	4,264,057	4,128,239
EBT:
Earnings before tax, before reconciling items									324,345	313,002	371,126
Restructuring charges and fees, net and other items									(16,785)	(2,995)	(3,550)
Fleet Management Solutions \| ChoiceLease
Revenue:
Lease and rental revenues									2,602,831	2,460,424	2,362,040
Fleet Management Solutions \| Commercial rental
Revenue:
Lease and rental revenues									905,305	777,261	808,912
Fleet Management Solutions \| ChoiceLease and commercial rental
Revenue:
Lease and rental revenues									3,508,136	3,237,685	3,170,952
Fleet Management Solutions \| SelectCare
Revenue:
Lease and rental revenues									462,046	428,422	415,507
Fleet Management Solutions \| Other
Revenue:
Lease and rental revenues									87,331	77,450	78,042
Fleet Management Solutions \| Fuel services revenue
Revenue:
Revenue from contract with customer									620,245	520,500	463,738
Fleet Management Solutions \| Operating Segments
Revenue:
Revenues									5,255,227	4,733,571	4,556,194
Fleet Management Solutions \| Eliminations
Revenue:
Revenues									(577,469)	(469,514)	(427,955)
Dedicated Transportation Solutions
EBT:
Earnings before tax, before reconciling items									61,236	55,346	63,204
Restructuring charges and fees, net and other items									0	(771)	(22)
Dedicated Transportation Solutions \| Operating Segments
Revenue:
Revenues									1,333,313	1,095,645	1,020,543
Supply Chain Solutions
Revenue:
Revenues									2,398,144	1,937,352
EBT:
Earnings before tax, before reconciling items									133,570	103,561	106,477
Restructuring charges and fees, net and other items									(7,668)	(2,278)	(278)
Supply Chain Solutions \| Operating Segments
Revenue:
Revenues									$ 2,398,144	$ 1,937,352	$ 1,609,356