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Related Party Transactions
12 Months Ended
Dec. 31, 2020
Related Party Transactions [Abstract]  
Related Party Transactions Related Party Transactions
Sales to and purchases from unconsolidated entities for 2020, 2019 and 2018 are as follows:
(in millions)202020192018
Sales to unconsolidated affiliates$10 $10 $10 
Purchases from unconsolidated affiliates16 22 22