Pension and Other Post-Retirement Benefits - Expected Benefit Plan Payments (Details) $ in Millions	Dec. 31, 2022 USD ($)
Qualified Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2018	$ 27.3
2019	27.3
2020	27.2
2021	27.0
2022	26.0
Years 2028-2032	124.2
Total	259.0
Nonqualified Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2018	5.6
2019	2.3
2020	2.3
2021	2.2
2022	2.2
Years 2028-2032	10.4
Total	25.0
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2018	2.0
2019	1.9
2020	1.7
2021	1.6
2022	1.4
Years 2028-2032	5.5
Total	$ 14.1

Defined benefit plan estimated future benefit payments.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

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

+ References

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

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

+ References

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

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

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