M10-12 Analyzing and Interpreting Pension Disclosure-Expenses and Returns Stanley Black & Decker, INC. discloses the following pension footnote in its 10-K report. ($ millions)- 2012 Service cost-$6.6 Interest cost-$62.9 Expected return on plan assets-($67.1) Prior service cost amortization-$1.0 Transition obligation amortization------ Actuarial loss amortization-$6.2 Settlement/Curtailment loss (gain)-$11.3 Net periodic pension expense-$20.9

Explain use of the word expected as it relates to pension plan assets.