XML 209 R202.htm IDEA: XBRL DOCUMENT v3.19.1
Equity and Remuneration to Shareholders - Summary of Equity Valuation Adjustments (Detail) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Miscellaneous equity [abstract]      
Adjustments to actuarial liabilities - Employee benefits R$ (257) R$ (235) R$ (169)
Adjustments to actuarial liabilities - Employee benefits (1,681) (1,241) (1,042)
Deemed cost of PP&E 611 639 685
Variation in fair value of financial asset available for sale     37
Subsidiaries, jointly-controlled entities and affiliated company (1,070) (602) (320)
Equity valuation adjustments (1,327) R$ (837) R$ (489)
Change is due to reversal R$ 18