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v3.20.1

Other Current Monetary Assets - Annual Yield Rates of Time Deposits, Negotiable Certificates of Deposits and Repurchase Agreements Collateralized by Bonds with Maturities of more Than Three Months (Detail) | 12 Months Ended |
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Dec. 31, 2019 | Dec. 31, 2018
Disclosure of annual yield rates of other current monetary assets [Line Items] |  |
Repurchase agreements collateralized by bonds with maturities of more than three months | 2.50% |
Bottom of range [Member] |  |
Disclosure of annual yield rates of other current monetary assets [Line Items] |  |
Time deposits and negotiable certificates of deposit with maturities of more than three months | 0.03% | 0.03%
Top of Range [Member] |  |
Disclosure of annual yield rates of other current monetary assets [Line Items] |  |
Time deposits and negotiable certificates of deposit with maturities of more than three months | 2.73% | 3.05%

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- Definition Percentage of repurchase agreements collateralized by bonds with maturities. + References No definition available. + Details
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