Pension and Other Postretirement Benefits - Schedule of Estimated Future Benefit Payments (Details) $ in Millions	Jun. 30, 2018 USD ($)
Pension Benefits
Estimated future benefit payments
2019	$ 83.8
2020	84.6
2021	85.3
2022	85.9
2023	86.3
2024-2028	423.7
Other Benefits
Estimated future benefit payments
2019	15.4
2020	15.4
2021	15.4
2022	15.4
2023	15.3
2024-2028	$ 74.6

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- Definition

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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