Capital Stock (Detail) - shares |
9 Months Ended | 12 Months Ended |
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Sep. 30, 2019 |
Dec. 31, 2018 |
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Class Of Stock [Line Items] | ||
Beginning balance | 249,510,022 | 248,129,430 |
Restricted stock grants | 1,178,732 | 865,095 |
Treasury shares issued | 1,532 | 5,302 |
Ending balance | 251,417,304 | 249,510,022 |
Restricted Stock | ||
Class Of Stock [Line Items] | ||
Restricted stock units vested | 714,271 | 434,046 |
Performance Share | ||
Class Of Stock [Line Items] | ||
Performance stock units issued | 12,283 | 73,985 |
Performance stock dividends | 464 | 2,164 |
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- Definition 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. No definition available.
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- Definition Number of shares of common stock issued as dividends during the period. Excludes stock splits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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