STATEMENTS OF CONSOLIDATED CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 8.1	$ 4.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	24.0	12.8
Amortization of definite-lived intangible assets	3.5	0.7
Amortization of debt premium and debt issuance costs	0.6	0.7
Deferred income taxes	2.0	(0.9)
Non-cash equity compensation	4.0	3.1
Loss on disposition of property, plant and equipment	(0.3)
Changes in operating assets and liabilities, net of effects of acquisition:
Trade and other receivables	(97.1)	(31.7)
Contract assets	(11.7)	(8.3)
Inventories	(26.9)	(24.3)
Prepaid expenses and other current assets	(2.5)	(0.4)
Accounts payable	92.9	33.0
Accrued liabilities	6.5	4.2
Annual variable cash contributions to Salaried VEBA		(1.7)
Long-term assets and liabilities, net	(2.3)	(3.1)
Net cash provided by (used in) operating activities	1.4	(11.4)
Cash flows from investing activities:
Capital expenditures	(28.3)	(9.1)
Cash payment for acquisition of the Warrick rolling mill		(617.5)
Net cash used in investing activities	(28.3)	(626.6)
Cash flows from financing activities:
Repayment of finance lease	(0.5)	(0.4)
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares	(1.9)	(2.4)
Cash dividends and dividend equivalents paid	(12.5)	(11.7)
Net cash used in financing activities	(14.9)	(14.5)
Net decrease in cash, cash equivalents and restricted cash during the period	(41.8)	(652.5)
Cash, cash equivalents and restricted cash at beginning of period	317.0	794.3
Cash, cash equivalents and restricted cash at end of period	$ 275.2	$ 141.8