| Decreases in the present value of defined benefit obligation or net defined benefit liability resulting from gain on remeasurement in other comprehensive income should be tagged with a positive value; increases resulting from loss on remeasurement should be tagged with a negative value. Increases in the fair value of plan assets resulting from gain on remeasurement in other comprehensive income represent a decrease in the net defined benefit liability (equivalent to an increase in a net defined benefit asset) and should be tagged with a positive value; decreases in fair value of plan assets resulting from loss on remeasurement should be tagged with a negative value. | en | http://www.xbrl.org/2003/role/commentaryGuidance | http://www.xbrl.org/2003/role/link |
| Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total increase (decrease) in net defined benefit liability (asset) resulting from loss (gain) on remeasurement in other comprehensive income | en | http://www.xbrl.org/2009/role/negatedTotalLabel | http://www.xbrl.org/2003/role/link |
| The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |