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Earnings Per Share - Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 29, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Jan. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Increase in quarterly dividend percentage 8.00%          
Common stock dividends, per share (in dollars per share) $ 0.26          
Share Repurchase Program January 2019            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Share repurchase program authorized amount           $ 5,000,000,000
Remaining authorized amount under share repurchase program   $ 1,100,000,000   $ 1,100,000,000    
Stock Options            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities excluded from diluted earnings per share calculation (in shares)   2,400 900 1,800 800