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Defined Benefit and Postretirement Benefits Contributions by Plan Type (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contributions in 2023	$ 18.1
Amounts contributed during the nine months ended September 30, 2023	16.1
Postretirement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contributions in 2023	0.5
Amounts contributed during the nine months ended September 30, 2023	$ 0.0

X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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