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Share-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2021
Share-based Payment Arrangement [Abstract] |
Summary of stock option activity | A summary of stock option activity is as follows:
| Shares (In thousands) |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value (In millions)
Stock options outstanding - December 31, 2020 | 14,689 |  |  | $ | 50.82 |  |  |  |  |
Granted | 4 |  |  | 102.69 |  |  |  |  |
Forfeited | (18) |  |  | 104.04 |  |  |  |  |
Exercised | (1,598) |  |  | 34.37 |  |  |  |  |
Stock options outstanding - March 31, 2021 | 13,077 |  |  | $ | 52.77 |  |  | 4.57 |  | $ | 867 |
Stock options exercisable - March 31, 2021 | 11,578 |  |  | $ | 46.08 |  |  | 4.04 |  | $ | 845 |
Summary of restricted stock and performance activity | A summary of restricted stock unit, restricted stock award and performance share unit activity is as follows:
| Restricted Stock Units and Awards |  | Performance Share Units
| Shares (In thousands) |  | Weighted-Average Grant Date Fair Value |  | Shares (In thousands) |  | Weighted-Average Grant Date Fair Value
Units - December 31, 2020 | 4,797 |  |  | $ | 98.29 |  |  | 1,821 |  |  | $ | 95.20 |
Granted | 1,989 |  |  | 103.23 |  |  | 255 |  |  | 108.68 |
Forfeited | (62) |  |  | 100.26 |  |  | (51) |  |  | 101.22 |
Vested | (2,008) |  |  | 99.26 |  |  | (223) |  |  | 79.70 |
Units - March 31, 2021 | 4,716 |  |  | $ | 99.92 |  |  | 1,802 |  |  | $ | 97.17 |

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- Definition Schedule Of Share-Based Compensation, Restricted Stock Units, Restricted Stock Awards, Performance Share Units And Performance Share Awards Activity [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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