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v3.19.3.a.u2

Shareholders' Equity (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 30, 2019 $ / shares | Apr. 30, 2017 $ / shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jan. 23, 2019 shares
Class of Stock |  |  |  |  |  |
Number of shares of common stock authorized |  |  | 1,100,000,000 |  |  |
Number of shares of preferred stock authorized |  |  | 15,000,000 |  |  |
Stock split ratio |  | 2 |  |  |  |
Percentage increase in quarterly dividends | 50.00% | 54.00% |  |  |  |
Dividends declared (in dollars per share) | $ / shares | $ 0.15 | $ 0.10 |  |  |  |
Stock Repurchase Program [Abstract] |  |  |  |  |  |
Share repurchases, net of issuances | $ |  |  | $ 945 | $ 711 | $ 76 |
Maximum |  |  |  |  |  |
Stock Repurchase Program [Abstract] |  |  |  |  |  |
Number of shares authorized for repurchase |  |  |  |  |  | 50,000,000
Series A Junior Participating Preferred Stock |  |  |  |  |  |
Class of Stock |  |  |  |  |  |
Number of shares of preferred stock authorized |  |  | 550,000 |  |  |

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