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Railway Operating Revenues - Schedule of Account Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Accounts receivable – net	$ 1,148	$ 976
Customer
Disaggregation of Revenue [Line Items]
Accounts receivable – net	895	741
Non-customer
Disaggregation of Revenue [Line Items]
Accounts receivable – net	$ 253	$ 235

X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522

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+ References

No definition available.

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