Retirement Plans and Postretirement Benefit Plans - Schedule of Expected Benefit Payments (Details) $ in Millions	Dec. 31, 2023 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected Future Benefit Payments, Next Twelve Months	$ 44.4
Expected Future Benefit Payments, Year Two	28.1
Expected Future Benefit Payments, Year Three	27.9
Expected Future Benefit Payments, Year Four	34.2
Expected Future Benefit Payments, Year Five	28.0
Expected Future Benefit Payments, Five Fiscal Years Thereafter	122.7
Og and E [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected Future Benefit Payments, Next Twelve Months	35.4
Expected Future Benefit Payments, Year Two	22.2
Expected Future Benefit Payments, Year Three	22.4
Expected Future Benefit Payments, Year Four	21.1
Expected Future Benefit Payments, Year Five	21.0
Expected Future Benefit Payments, Five Fiscal Years Thereafter	$ 96.3

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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

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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.

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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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