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Related Party Transactions (Tables)
3 Months Ended
Mar. 31, 2019
Related Party Transactions [Abstract]  
Related Party Transactions
 
Three Months Ended March 31,
(In millions)
2019
 
2018
Transactions with Horseshoe Baltimore
 
 
 
Management fees
$
2

 
$
3

Allocated expenses
1

 
1