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v3.19.1

Significant Accounting Policies - Additional Information (Detail) - Segment | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of accounting policies [line items] |  |
Significant insurance to total liabilities, percentage | 80.00% |
Percentage of different from discounted present value of cash flow remaining from original financial liabilities | 10.00% |
Number of reportable segments | 3 |
Bottom of range [member] |  |
Disclosure of accounting policies [line items] |  |
Consolidated companies percentage as total consolidated assets, as well as interests in their voting capital | 95.00% | 95.00%
Top of range [member] |  |
Disclosure of accounting policies [line items] |  |
Percentage of variation in total assets due to transition to IFRS 16 | 0.50% |

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- Definition Aggregate percentage of consolidated companies to consolidated assets + References No definition available. + Details
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Balance Type: | na
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- Definition Disclosure of accounting policies [line items] + References No definition available. + Details
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Balance Type: | na
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- Definition Number of Reportable Segments1 + References No definition available. + Details
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Balance Type: | na
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- Definition Percentage of different from discounted present value of cash flow remaining from original financial liabilities. + References No definition available. + Details
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- Definition Percentage of significant insurance activities to total liabilities. + References No definition available. + Details
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- Definition Percentage of variation in total assets due to transition to IFRS 16. + References No definition available. + Details
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- Details
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Period Type: |

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- Details
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Period Type: |