Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Summary of Consolidated Financial Information of our Operations by Geographic Location

The following tables summarize consolidated financial information of our operations by geographic location based on where sales originated or where the assets are held:

	Year Ended December 31,
Net Sales	2021				2020				2019
	(Dollars in millions)
United States	$	5,123.7	90	%	$	3,089.7	89	%	$	4,076.8	91	%
Foreign countries		551.6	10	%		376.9	11	%		424.8	9	%
Total	$	5,675.3	100	%	$	3,466.6	100	%	$	4,501.6	100	%

	At December 31,
Long-Lived Assets	2021				2020				2019
	(Dollars in millions)
United States	$	557.8	93	%	$	485.1	92	%	$	519.1	91	%
Foreign countries		41.6	7	%		45.0	8	%		48.8	9	%
Total	$	599.4	100	%	$	530.1	100	%	$	567.9	100	%