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Related Party Transactions (Tables)
12 Months Ended
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)202020192018
Cost of materials and other
Joint Venture Transportation Agreement:
Enable$11 $12 $
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 PeriodDate PaidDividend Per ShareStockholdersIEP Total
2019 - 4th QuarterMarch 9, 2020$0.80 $23 $57 $80 
2020 - 1st QuarterMay 26, 20200.40 12 28 40 
Total$1.20 $35 $85 $121