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v3.20.4

Stock Compensation - Effect on Shares Outstanding and Treasury Shares (Details) - shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Treasury stock (in shares) | 821,461,787 | 808,784,381 | 795,665,646 | 757,657,217
Repurchases (in shares) | 23,430,215 | 27,398,701 | 49,482,220 |
Total issued (in shares) | (10,751,252) | (14,208,395) | (11,468,610) |
Director |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Director deferred stock units issued (in shares) | (1,557) | (71,571) | (5,181) |
Employee Stock Option |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Exercised (in shares) | (8,392,354) | (11,529,174) | (8,432,458) |
Stock applied to taxes (in shares) | 0 | 0 | 0 |
Total issued (in shares) | (9,137,837) | (12,327,980) | (9,252,336) |
Employee Stock Option | Director |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Director deferred stock units issued (in shares) | 0 | 0 | 0 |
Restricted Stock Units (RSUs) |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Vested RSUs (in shares) | (2,034,933) | (2,370,762) | (2,769,994) |
Stock applied to taxes (in shares) | 421,518 | 490,347 | 553,720 |
Total issued (in shares) | (1,613,415) | (1,880,415) | (2,216,274) |
Restricted Stock Units (RSUs) | Director |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Director deferred stock units issued (in shares) | 0 | 0 | 0 |
Employee stock purchase plan |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Exercised (in shares) | (745,483) |  |  |
Employee stock purchase plan | Employee Stock Option |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Exercised (in shares) | (745,483) | (798,806) | (819,878) |
Employee stock purchase plan | Restricted Stock Units (RSUs) |  |  |  |
Change In Treasury Stock Roll Forward [Roll Forward] |  |  |  |
Vested RSUs (in shares) | 0 | 0 | 0 |

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