Pension Plans (Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets) (Details) - Pension Plan - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
United States
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 30.1	$ 541.1
Accumulated benefit obligation	30.1	541.1
Estimated fair value of plan assets	0.0	491.7
International
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	68.9	74.6
Accumulated benefit obligation	66.7	72.2
Estimated fair value of plan assets	$ 41.6	$ 40.3

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

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