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Pension Benefit Obligations - Funded Status (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
United States
Reconciliation of funded status:
Funded status at end of year	$ (126.5)	$ (154.3)	$ (146.3)
Net amount recognized at end of year	(126.5)	(154.3)	(146.3)
International
Reconciliation of funded status:
Funded status at end of year	(219.0)	(274.1)	(242.5)
Net amount recognized at end of year	$ (219.0)	$ (274.1)	$ (242.5)

X

- Definition

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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X

- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References

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