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Pension Benefit Obligations - Excess of Plan Assets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
United States
Additional year-end information for pension plans with accumulated benefit obligations in excess of plan assets
Projected benefit obligation	$ 260.7	$ 252.5	$ 232.2
Accumulated benefit obligation	260.7	252.5	232.2
Fair values of plan assets	129.6	129.3	131.3
Expected employer contributions in next fiscal year	12.2
International
Additional year-end information for pension plans with accumulated benefit obligations in excess of plan assets
Projected benefit obligation	1,216.6	1,141.9	1,002.6
Accumulated benefit obligation	1,211.5	1,132.7	991.9
Fair values of plan assets	898.5	$ 871.2	$ 760.7
Expected employer contributions in next fiscal year	$ 28.4

X

- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

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

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