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Railway Operating Revenues | 9 Months Ended
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Sep. 30, 2020
Revenue from Contract with Customer [Abstract] |
Railway Operating Revenues | Railway Operating Revenues The following table disaggregates our revenues by major commodity group:
|  | Third Quarter |  | First Nine Months
|  | 2020 |  | 2019 |  | 2020 |  | 2019
|  | ($ in millions)
Merchandise: |  |
Agriculture, forest and consumer products |  | $ | 521 |  |  | $ | 572 |  |  | $ | 1,570 |  |  | $ | 1,707 |
Chemicals |  | 428 |  |  | 535 |  |  | 1,371 |  |  | 1,586 |
Metals and construction |  | 337 |  |  | 377 |  |  | 997 |  |  | 1,131 |
Automotive |  | 270 |  |  | 247 |  |  | 597 |  |  | 749 |
Merchandise |  | 1,556 |  |  | 1,731 |  |  | 4,535 |  |  | 5,173 |
Intermodal |  | 700 |  |  | 707 |  |  | 1,924 |  |  | 2,127 |
Coal |  | 250 |  |  | 403 |  |  | 757 |  |  | 1,306 |
Total |  | $ | 2,506 |  |  | $ | 2,841 |  |  | $ | 7,216 |  |  | $ | 8,606 |
At the beginning of 2020, we combined the agriculture products and forest and consumer commodity groups. In addition, we also made changes in the categorization of certain other commodity groups within Merchandise. Specifically, certain commodities were shifted between agriculture, forest, and consumer products; chemicals; and, metals and construction. These changes were made as a result of organizational initiatives to better align with how we manage these commodities. Prior period railway operating revenues have been reclassified to conform to the current presentation. We recognize the amount of revenue we expect to be entitled to for the transfer of promised goods or services to customers. A performance obligation is created when a customer under a transportation contract or public tariff submits a bill of lading to NS for the transport of goods. These performance obligations are satisfied as the shipments move from origin to destination. As such, transportation revenue is recognized proportionally as a shipment moves, and related expenses are recognized as incurred. These performance obligations are generally short-term in nature with transit days averaging approximately one week or less for each commodity group. The customer has an unconditional obligation to pay for the service once the service has been completed. Estimated revenue associated with in-process shipments at period-end is recorded based on the estimated percentage of service completed. We had no material remaining performance obligations as of September 30, 2020 or December 31, 2019. Revenue related to interline transportation services that involve another railroad is reported on a net basis. Therefore, the portion of the amount that relates to another party is not reflected in revenue. Under the typical payment terms of our freight contracts, payment for services is due within fifteen days of billing the customer, thus there are no significant financing components. “Accounts receivable – net” on the Consolidated Balance Sheets includes both customer and non-customer receivables as follows:
|  | September 30, 2020 |  | December 31, 2019
|  | ($ in millions)
Customer |  | $ | 664 |  |  | $ | 682 |
Non-customer |  | 219 |  |  | 238 |
Accounts receivable – net |  | $ | 883 |  |  | $ | 920 |
Non-customer receivables include non-revenue-related amounts due from other railroads, governmental entities, and others. “Other assets” on the Consolidated Balance Sheets includes non-current customer receivables of $23 million at both September 30, 2020 and December 31, 2019. We do not have any material contract assets or liabilities at September 30, 2020 or December 31, 2019. We may provide customers ancillary services, such as switching, demurrage and other incidental services, under their transportation contracts. These are distinct performance obligations that are recognized at a point in time when the services are performed or as contractual obligations are met. This revenue is included within each of the commodity groups and represents 5% of total “Railway operating revenues” on the Consolidated Statements of Income for the third quarters and first nine months of 2020 and 2019.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 + Details
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