Stock Compensation - Stock Option Activity (Details) shares in Millions |
12 Months Ended |
|---|---|
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Dec. 31, 2018
$ / shares
shares
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| Shares Subject to Option | |
| Outstanding at December 31, 2017 (in shares) | shares | 18.6 |
| Exercised (in shares) | shares | 1.1 |
| Outstanding and Exercisable at December 31, 2018 (in shares) | shares | 17.5 |
| Weighted Average Exercise Price | |
| Outstanding at December 31, 2017 (in dollars per share) | $ / shares | $ 41.68 |
| Exercised (in dollars per share) | $ / shares | 37.82 |
| Outstanding and Exercisable at December 31, 2018 (in dollars per share) | $ / shares | $ 41.92 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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