Common Stockholders' Equity (Schedule of Changes in Shares of Common Stock Outstanding) (Details) - shares |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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Common Stock Shares Outstanding [Roll Forward] | |||
Balance, beginning of year | 183,411,907 | 182,993,640 | 182,272,278 |
Shares issued | 776,544 | 687,339 | 1,257,762 |
Shares repurchased | (6,363,301) | (269,072) | (536,400) |
Balance, end of year | 177,825,150 | 183,411,907 | 182,993,640 |
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. 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 Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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