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Related Party Transactions (Tables)
3 Months Ended
Mar. 31, 2020
Related Party Transactions [Abstract]  
Schedule of related party transactions
 
Three Months Ended March 31,
(In millions)
2020
 
2019
Transactions with Horseshoe Baltimore
 
 
 
Management fees
$
2

 
$
2

Allocated expenses
2

 
1