| The expected rate of return on any defined benefit plan assets used as a significant actuarial assumption to determine the present value of a defined benefit obligation. Actuarial assumptions are the entity’s unbiased and mutually compatible best estimates of the demographic and financial variables that will determine the ultimate cost of providing post-employment benefits. [Refer: Plan assets, at fair value; Defined benefit plans [member]; Defined benefit obligation, at present value] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |