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Capital Stock (Tables) | 12 Months Ended
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Dec. 31, 2021
Equity [Abstract] |
Schedule of Changes in Number of Common Shares Outstanding | The following is a schedule of changes in the number of common shares outstanding since the beginning of 2020:
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |
Beginning balance |  |  | 246,348,092 |  |  |  | 249,630,803 |
Restricted stock grants |  |  | 1,293,892 |  |  |  | 3,390,358 |
Restricted stock units vested |  |  | 1,493,341 |  |  |  | 1,226,473 |
Performance stock units issued |  |  | 640,468 |  |  |  | 279,420 |
Performance stock dividends |  |  | 13,966 |  |  |  | 18,700 |
Treasury shares |  |  | 3,149 |  |  |  | (8,197,662 | )
Ending balance |  |  | 249,792,908 |  |  |  | 246,348,092 |
Schedule of Change in Treasury Shares | The following is a schedule of the change in treasury shares since the beginning of 2020:
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |
Beginning balance |  |  | 10,005,795 |  |  |  | 1,808,133 |
Rabbi trust shares distributed and/or sold |  |  | (3,149 | ) |  |  | (2,338 | )
Shares repurchased |  |  | — |  |  |  | 8,200,000 |
Ending balance |  |  | 10,002,646 |  |  |  | 10,005,795 |

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- Definition Tabular disclosure of an entity's capital units or capital shares, including the value of capital units or capital shares, units authorized, units outstanding and other information necessary to a fair presentation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 + Details
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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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