| Dec'10 | Dec'09 | Dec'08 | Dec'07 | |||
|---|---|---|---|---|---|---|
Classes of share capital [axis] | ||||||
ifrs-full_ClassesOfShareCapitalMember: share capital [member] | ||||||
Common shares | ||||||
Preferred shares | ||||||
Basic and diluted income per share based on the weighted average number of shares attributable to shareholders (expressed in R$ per share): | ||||||
Common shares | ||||||
1,881 | 1,856 | 1,853 | 1,654 | |||
Preferred shares | ||||||
1,888 | 1,863 | 1,859 | 1,655 | |||