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Pension Plans (Tables)
6 Months Ended
Feb. 28, 2025
Retirement Benefits [Abstract]  
Schedule of Net Periodic Pension Cost Net periodic pension cost included the following components before tax for the periods presented (in millions):
 Three Months EndedSix Months Ended
 February 28, 2025February 29, 2024February 28, 2025February 29, 2024
Service cost$1.3 $1.2 $2.7 $2.3 
Interest cost2.4 2.4 4.8 4.9 
Expected return on plan assets(2.1)(2.2)(4.2)(4.4)
Recognized actuarial loss0.6 0.8 1.3 1.6 
Net periodic pension cost$2.2 $2.2 $4.6 $4.4