Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2022

Supplemental Cash Flow Elements [Abstract]

Schedule of Noncash Investing and Financing Activities

Noncash investing and financing activities are as follows:

	Three Months Ended
	March 31,
	2022		2021
	(Dollars in Millions)
Noncash investing and financing activities:
Right-of-use assets obtained in exchange for    new finance lease liabilities	$	3.6	$	115.1
Right-of-use assets obtained in exchange for new    operating lease liabilities	$	6.1	$	6.0
Accrued liabilities for purchases of property, plant and equipment	$	24.5	$	28.7
Remeasurement of operating lease right-of-use assets	$	0.3	$	(6.2	)
Remeasurement of finance lease right-of-use assets	$	0.4	$	—

For the three months ended March 31, 2021, the right-of-use assets obtained in exchange for new finance lease liabilities balance were primarily attributable to the lease of the new corporate headquarters.  

Supplemental Disclosures of Cash Flow Information

Supplemental disclosures of cash flow information are as follows:

	Three Months Ended
	March 31,
	2022		2021
	(Dollars in Millions)
Cash paid for interest, net of capitalized amount	$	44.8	$	14.8
Cash paid for income taxes, net of refunds	$	0.8	$	—