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Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | Norfolk Southern Corporation and Subsidiaries Valuation and Qualifying Accounts Years ended December 31, 2020, 2019, and 2018 ($ in millions)
|  |  | Additions charged to: |  |  |  |
| Beginning Balance |  | Expenses |  | Other Accounts |  | Deductions |  | Ending Balance
Year ended December 31, 2020 |  |  |  |  |  |  |  |  |
Current portion of casualty and |  |  |  |  |  |  |  |  |
other claims included in |  |  |  |  |  |  |  |  |
accounts payable | $ | 212 |  |  | $ | 27 |  |  | $ | 81 |  | (2) | $ | 138 |  | (3) | $ | 182 |
Casualty and other claims |  |  |  |  |  |  |  |  |
included in other liabilities | 171 |  |  | 80 |  | (1) | — |  |  | 82 |  | (4) | 169 |
Year ended December 31, 2019 |  |  |  |  |  |  |  |  |
Current portion of casualty and |  |  |  |  |  |  |  |  |
other claims included in |  |  |  |  |  |  |  |  |
accounts payable | $ | 213 |  |  | $ | 22 |  |  | $ | 131 |  | (2) | $ | 154 |  | (3) | $ | 212 |
Casualty and other claims |  |  |  |  |  |  |  |  |
included in other liabilities | 158 |  |  | 89 |  | (1) | — |  |  | 76 |  | (4) | 171 |
Year ended December 31, 2018 |  |  |  |  |  |  |  |  |
Current portion of casualty and |  |  |  |  |  |  |  |  |
other claims included in |  |  |  |  |  |  |  |  |
accounts payable | $ | 187 |  |  | $ | 32 |  |  | $ | 145 |  | (2) | $ | 151 |  | (3) | $ | 213 |
Casualty and other claims |  |  |  |  |  |  |  |  |
included in other liabilities | 179 |  |  | 85 |  | (1) | — |  |  | 106 |  | (4) | 158 |
(1)Includes adjustments for changes in estimates for prior years’ claims. (2)Includes revenue refunds and overcharges provided through deductions from operating revenues and transfers from other accounts. (3)Payments and reclassifications to/from accounts payable. (4)Payments and reclassifications to/from other liabilities.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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