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Share-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of share-based compensation expense
A summary of compensation expense during the three months ended March 31, 2021 and 2020 is presented below:
Three Months Ended
March 31,
(in millions)20212020
Performance Unit Awards$(3)$— 
CVR Partners LTIP - Phantom Unit Awards4 (1)
Incentive Unit Awards7 (1)
Total Share-Based Compensation Expense$8 $(2)