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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 |

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