Capital Stock (Tables)

9 Months Ended

Sep. 30, 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:

	Nine Months Ended September 30, 2021		Year Ended December 31, 2020
Beginning balance		246,348,092		249,630,803
Restricted stock grants		1,293,126		3,390,358
Restricted stock units vested		1,485,557		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		249,784,358		246,348,092

Schedule of Change in Treasury Shares

The following is a schedule of the change in treasury shares for the three and nine months ended September 30, 2021:

	Three Months Ended September 30, 2021			Nine Months Ended September 30, 2021
Beginning balance		10,005,504			10,005,795
Rabbi trust shares distributed/sold		(2,858	)		(3,149	)
Shares repurchased		—			—
Ending balance		10,002,646			10,002,646