Revenue Recognition - Disaggregation of Revenue by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	$ 3,864	$ 4,120
Total revenue	3,864	4,120
Eliminations/Other
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	(32)	(33)
Total revenue	(32)	(33)
Transportation
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	2,459	2,659
Transportation \| Freight brokerage and truckload
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	1,023	1,092
Transportation \| LTL
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	1,135	1,179
Transportation \| Last mile
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	201	224
Transportation \| Managed transportation
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	83	124
Transportation \| Global forwarding
Disaggregation of Revenue [Line Items]
Revenue, including assessed taxes	61	77
Transportation \| Eliminations/Other
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	(44)	(37)
Logistics
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed taxes	$ 1,437	$ 1,494

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Amount, including 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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-Name Accounting Standards Codification
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