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Earnings Per Share - Additional Information (Details) - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2017
Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Common stock outstanding (in shares) 432,855,183   483,000,000
Incremental Common Shares Attributable to Dilutive Effect of Accelerated Share Repurchase Agreements 55,000,000    
Mandatory convertible preferred stock      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Shares that would have been included in diluted earnings per share calculation (in shares)   30,000,000  
Convertible notes      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Shares that would have been included in diluted earnings per share calculation (in shares)   14,000,000  
Stock Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Shares that would have been included in diluted earnings per share calculation (in shares)   1,000,000  
Stock awards      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Shares that would have been included in diluted earnings per share calculation (in shares)   5,000,000