Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

After-tax components of comprehensive income (loss)

The following table sets forth the after-tax components of accumulated other comprehensive income and changes thereto recorded during the three months ended March 31, 2022:

	Foreign Currency Translation Adjustment		Prior Service Credit Associated with Postretirement Plans		Total Accumulated Other Comprehensive Income
	(Dollars in millions)
December 31, 2021	$	0.8	$	297.1	$	297.9
Reclassification from other comprehensive income to earnings	—		(13.4)		(13.4)
Current period change	1.9		—		1.9
March 31, 2022	$	2.7	$	283.7	$	286.4