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Compensation Related Costs, Retirement Benefits
 3 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
RETIREMENT PLANS RETIREMENT PLANSDuring the three months ended December 31, 2022, a defined benefit pension plan associated with the former business in the United Kingdom entered into a buy-in insurance policy in exchange for a premium payment of $75.9, which is subject to adjustment as a result of subsequent data cleansing activities. Under the terms of this buy-in insurance policy, the insurer is liable to pay the benefits to the plan but the plan still retains full legal responsibility to pay the benefits to plan participants using the insurance payments. The buy-in policy will be treated as an asset of the plan going forward until such time as the buy-in policy is converted to a buy-out policy, which is when individual insurance policies will be assigned to each plan participant and the plan will no longer have legal responsibility to pay the benefits to the plan participants.