Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2020

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 nine months ended September 30, 2020:

	Foreign Currency Translation Adjustment		Prior Service Credit (Cost) Associated with Postretirement Plans		Total Accumulated Other Comprehensive Income
	(Dollars in millions)
December 31, 2019	$	(4.3)	$	35.9	$	31.6
Reclassification from other comprehensive income to earnings	—		(6.6)		(6.6)
Current period change	1.8		174.5		176.3
September 30, 2020	$	(2.5)	$	203.8	$	201.3