| Increase (decrease) in investment property at cost less accumulated depreciation and impairment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total increase (decrease) in investment property at cost less accumulated depreciation and impairment | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The increase (decrease) in investment property at cost less accumulated depreciation and impairment. [Refer: Investment property [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |