how will this change in GAAP impact GM's operating income?

how will investors react to this change?

Financial Reporting for Pensions. In March of 2017, the FASB updated the standards for reporting pension costs. Under the old standards, the components of pension cost, such as service cost (the cost of benefits carned in the current year), interest cost (the increase in pension costs due to the passage of time), the expected return on plan assets (the amount that managers anticipate they will earn on the plan's investments), and other costs were all reflected in operating income. Under the new rules (which are now in effect), service costs will be reported as an operating cost and all the other pension costs and any expected returns will be reported as non-operating items. What will be the change in operating income for GM? Should this change matter to investors