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Earnings Per Share - Narrative (Details) - shares
shares in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares)   1
Maximum    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 1