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Investment in Affiliates and Related-Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2020
Related Party Transactions [Abstract] |
Schedule of Equity-method Investments in Affiliates | CSX's investments in affiliates are included on the consolidated balance sheet as investments in affiliates and other companies.
| December |  | December
(Dollars in Millions) | 2020 |  | 2019
Equity-method investments: |  |  |
Conrail | $ | 1,025 |  |  | $ | 982 |
TTX | 796 |  |  | 743 |
Other | 164 |  |  | 154 |
Total | $ | 1,985 |  |  | $ | 1,879 |
Schedule of Future Payments Under Shared Asset Area Agreements | The following table presents information about the amount, timing and uncertainty of cash flows arising from all of the Company’s operating leases as of December 31, 2020.
(Dollars in Millions) | December 2020
Maturity of Lease Liabilities | Lease Payments
2021 | 47 |
2022 | 43 |
2023 | 36 |
2024 | 36 |
2025 | 35 |
Thereafter | 1,172 |
Total undiscounted operating lease payments | $ | 1,369 |
Less: Imputed interest | (869) |
Present value of operating lease liabilities | $ | 500 |
Future payments due to Conrail under the shared asset area agreements are shown in the table below.
(Dollars in Millions) | Conrail Shared
Years | Asset Agreement
2021 | $ | 30 |
2022 | 30 |
2023 | 30 |
2024 | 22 |
2025 | — |
Thereafter | — |
Total | $ | 112 |
Schedule of Related Party in the Consolidated Income Statement Components | The following table discloses amounts related to Conrail. All amounts in the table below are included in materials, supplies and other expenses on the Company’s consolidated income statements.
| Fiscal Years
(Dollars in Millions) | 2020 |  | 2019 |  | 2018
Rents, fees and services | $ | 126 |  |  | $ | 119 |  |  | $ | 117 |
Purchase price amortization and other | 4 |  |  | 4 |  |  | 4 |
Equity earnings of Conrail | (49) |  |  | (42) |  |  | (43) |
Total Conrail Expense | $ | 81 |  |  | $ | 81 |  |  | $ | 78 |
As required by the Related Party Disclosures Topic in the ASC, the following table discloses amounts related to TTX. Car hire rents and equity earnings are included in equipment and other rents expense on the Company’s consolidated income statement.
| Fiscal Years
(Dollars in Millions) | 2020 |  | 2019 |  | 2018
Income statement information: |  |  |  |  |
Car hire rents | $ | 219 |  |  | $ | 223 |  |  | $ | 223 |
Equity earnings of TTX | (51) |  |  | (56) |  |  | (60) |
Total TTX expense | $ | 168 |  |  | $ | 167 |  |  | $ | 163 |
Schedule of Related Party Consolidated Balance Sheet Components | As required by the Related Party Disclosures Topic in the ASC, the Company has identified amounts below owed to Conrail, or its subsidiaries, representing liabilities under the operating, equipment and shared area agreements with Conrail. In 2014, the Company executed two promissory notes with a subsidiary of Conrail which were included in long-term debt on the consolidated balance sheets. Interest expense from these promissory notes was $6 million in each 2020, 2019 and 2018.
| December |  | December
(Dollars in Millions) | 2020 |  | 2019
Balance Sheet Information: |  |  |
CSX accounts payable to Conrail | $ | 50 |  |  | $ | 213 |
Promissory notes payable to Conrail subsidiary |  |  |
1.31% CSX Promissory Note due December 2050 | 73 |  |  | — |
1.31% CSXT Promissory Note due December 2050 | 368 |  |  | — |
2.89% CSX Promissory Note due October 2044 | — |  |  | 73 |
2.89% CSXT Promissory Note due October 2044 | — |  |  | 151 |
Also included below is balance sheet information related to CSX's payable to TTX, which represents car rental liabilities.
| December |  | December |
Balance sheet information: | 2020 |  | 2019 |
CSX payable to TTX | $ | 40 |  |  | $ | 34 |  |

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