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Insurance technical provisions and pension plans (Details 6) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Changes in the insurance and pension technical provisions
Receipt of premiums net of fees	R$ 70,237,723	R$ 65,333,387	R$ 59,104,979
Payment of benefits	192,043	147,842
Pensions – PGBL and Traditional Plans
Changes in the insurance and pension technical provisions
At the beginning of the year	45,557,528	36,848,112
Receipt of premiums net of fees	3,446,148	7,412,759
Payment of benefits	(759,949)	(696,056)
Payment of redemptions	(2,962,505)	(2,438,351)
Adjustment for inflation and interest	3,656,452	4,808,394
Others	(1,314,352)	(377,330)
At the end of the year	R$ 47,623,322	R$ 45,557,528

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- Definition

Pensions - PGBL and Traditional Plans - At the beginning of the year

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- Definition

The amount of benefits paid or payable for retirement benefit plans.

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The decrease in liabilities under insurance contracts and reinsurance contracts issued resulting from cash paid. [Refer: Liabilities under insurance contracts and reinsurance contracts issued]

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The increase (decrease) in liabilities under insurance contracts and reinsurance contracts issued. [Refer: Liabilities under insurance contracts and reinsurance contracts issued]

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The increase (decrease) in liabilities under insurance contracts and reinsurance contracts issued resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Liabilities under insurance contracts and reinsurance contracts issued]

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The amount of premiums earned on insurance contracts net of reinsurance premiums. [Refer: Types of insurance contracts [member]]

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