Pension and Other Postretirement Benefits - Schedule of Amounts Recognized in the Accumulated other Comprehensive Loss (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 1,225.5	$ 1,343.0
Fair value of plan assets	999.4	923.3
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	249.3	264.2
Fair value of plan assets	$ 136.3	$ 112.8

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

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- Definition

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

+ References

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