Capital Stock - Schedule of Changes in Number of Common Shares Outstanding (Detail) - shares	9 Months Ended	12 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Class Of Stock [Line Items]
Beginning balance	249,792,908	246,348,092
Treasury shares	(10,600,389)	3,149
Ending balance	242,283,655	249,792,908
Restricted Stock
Class Of Stock [Line Items]
Restricted stock grants	670,728	1,293,892
Restricted stock units vested	1,827,625	1,493,341
Performance Share
Class Of Stock [Line Items]
Performance stock units issued	590,940	640,468
Performance stock dividends	1,843	13,966

Treasury stock shares acquired and issued.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares of common stock issued as dividends during the period. Excludes stock splits.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Number of new stock issued during the period.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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