Restructuring Charges - Schedule of Restructuring (Details) $ in Millions	3 Months Ended
Mar. 31, 2026 USD ($)
Restructuring Reserve [Roll Forward]
Reserve, beginning balance	$ 11
Charges Incurred	6
Payments	(5)
Reserve, ending balance	11
Operating Segments \| North American LTL \| Severance
Restructuring Reserve [Roll Forward]
Reserve, beginning balance	1
Charges Incurred	0
Payments	0
Reserve, ending balance	0
Operating Segments \| European Transportation \| Severance
Restructuring Reserve [Roll Forward]
Reserve, beginning balance	3
Charges Incurred	4
Payments	(3)
Reserve, ending balance	4
Operating Segments \| European Transportation \| Other Restructuring
Restructuring Reserve [Roll Forward]
Charges Incurred	2
Corporate \| Severance
Restructuring Reserve [Roll Forward]
Reserve, beginning balance	7
Charges Incurred	2
Payments	(2)
Reserve, ending balance	7
Corporate \| Other Restructuring
Restructuring Reserve [Roll Forward]
Charges Incurred	$ 1

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 2
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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