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Insurance Contracts and Private Pension - Summary of Income Related to Insurance and Private Pension (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | R$ 19,624 | R$ 24,097 | R$ 26,876
Group accident insurance [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 867 | 689 | 666
Individual accident [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 222 | 280 | 289
Commercial Multiple Peril [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 50 | 52 | 53
Internal Credit [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 68 | 78 | 64
Serious or Terminal Diseases [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 211 | 188 | 172
Disability Savings Pension [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 269 | 291 | 319
Plan Generator of Benefits [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 2,282 | 2,193 | 2,084
Credit Life [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 946 | 879 | 621
Income from Uncertain Events [member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 227 | 235 | 177
Multiple Risks [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 290 | 209 | 151
Home insurance in market policies credit life [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 324 | 288 | 272
Traditional Insurance [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 115 | 122 | 129
VGBL [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 12,335 | 17,154 | 20,318
Group life [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | 947 | 937 | 990
Other Lines [Member] |  |  |
Disclosure of Types of Insurance Contracts [Line Items] |  |  |
Premiums and contributions | R$ 471 | R$ 502 | R$ 571

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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