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Pension Benefits and Postretirement Benefits Other Than Pensions (Tables)

3 Months Ended

Mar. 31, 2021

Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

The components of Pension Income for the Pension Plan for the three months ended March 31, 2021 and 2020 were:

						Three Months Ended
(Dollars in Millions)						Mar 31, 2021						Mar 31, 2020
Interest Cost on Projected Benefit Obligation						$	1.8					$	4.5
Expected Return on Plan Assets						(2.3)						(7.3)
Amortization of Net Actuarial Loss						0.7						1.5
Total Pension (Benefit) Expense						$	0.2					$	(1.3)

Postretirement Benefits Other than Pensions

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

The components of OPEB benefits for the OPEB Plans for the three months ended March 31, 2021 and 2020 were:

						Three Months Ended
(Dollars in Millions)						Mar 31, 2021						Mar 31, 2020
Service Cost						$	0.1					$	0.1
Interest Cost on Accumulated Postretirement Benefit Obligation						—						0.1
Amortization of Prior Service Credit						(0.3)						(0.3)
Amortization of Net Gain						(0.4)						(0.5)
Total OPEB (Benefit) Expense						$	(0.6)					$	(0.6)

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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.

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Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.

+ References

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