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Significant Accounting Policies - Impact of IFRS 16 on Basic and Diluted Earnings per Ordinary Share (Detail) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of expected impact of initial application of new standards or interpretations [line items] |  |  |
Basic earnings per ordinary share | $ 2.104 | $ 1.837 | $ 2.767
Diluted earnings per ordinary share | $ 2.092 | 1.818 | 2.753
Previously reported [member] |  |  |
Disclosure of expected impact of initial application of new standards or interpretations [line items] |  |  |
Basic earnings per ordinary share |  | 1.847 | 2.798
Diluted earnings per ordinary share |  | 1.828 | 2.784
Increase (decrease) due to application of IFRS 16 [member] |  |  |
Disclosure of expected impact of initial application of new standards or interpretations [line items] |  |  |
Basic earnings per ordinary share |  | (0.010) | (0.031)
Diluted earnings per ordinary share |  | (0.010) | (0.031)
Restated [member] |  |  |
Disclosure of expected impact of initial application of new standards or interpretations [line items] |  |  |
Basic earnings per ordinary share |  | 1.837 | 2.767
Diluted earnings per ordinary share |  | $ 1.818 | $ 2.753

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