Share-Based Compensation - Stock Incentive Plans (Detail)
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12 Months Ended |
Dec. 31, 2021 |
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| Stock Options [Member] |
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| Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
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| Vesting period |
Up to four years
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| Fair Value Measure |
Black-Scholes option pricing model
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| TSRUs [Member] |
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| Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
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| Vesting period |
Up to five years
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| Fair Value Measure |
Closing common share price
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| PRSUs [Member] |
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| Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
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| Vesting period |
Three-year performance period
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| Fair Value Measure |
Closing common share price
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| Equity-settled [member] | Stock Options [Member] |
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| Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
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| Compensation expense |
Fair value on business day prior to grant date
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| Equity-settled [member] | TSRUs [Member] |
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| Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
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| Compensation expense |
Fair value on business day prior to grant date
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| Equity-settled [member] | PRSUs [Member] |
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| Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
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| Compensation expense |
Fair value on business day prior to grant date
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