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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2020
Related Party Transactions [Abstract] |
Schedule of related party transactions | Activity associated with the Company’s related party arrangements for the years ended December 31, 2020, 2019, and 2018 is summarized below:
Expenses with related parties
| Year Ended December 31,
(in millions) | 2020 |  | 2019 |  | 2018
Cost of materials and other |  |  |  |  |
Joint Venture Transportation Agreement: |  |  |  |  |
Enable | $ | 11 |  |  | $ | 12 |  |  | $ | 8 |
Payments (received) made |  |  |  |  |
Dividends (1) | 85 |  |  | 218 |  |  | 179 |
Tax Allocation Agreement: |  |  |  |  |
AEP | — |  |  | (3) |  |  | 12 |
(1)See below for a summary of the dividends paid to IEP for the years ended December 31, 2020, 2019, and 2018.
Schedule of dividends paid | The following presents dividends paid to the Company's stockholders, including IEP, during the year ended December 31, 2020 (amounts presented in tables below may not add to totals presented due to rounding).
|  |  |  |  |  | Dividends Paid (in millions)
Related Period |  | Date Paid |  | Dividend Per Share |  | Stockholders |  | IEP |  | Total
2019 - 4th Quarter |  | March 9, 2020 |  | $ | 0.80 |  |  | $ | 23 |  |  | $ | 57 |  |  | $ | 80 |
2020 - 1st Quarter |  | May 26, 2020 |  | 0.40 |  |  | 12 |  |  | 28 |  |  | 40 |
Total |  |  |  | $ | 1.20 |  |  | $ | 35 |  |  | $ | 85 |  |  | $ | 121 |

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- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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