Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net loss	$ (68.0)	$ (7.6)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	249.6	142.8
Provision for loss on receivables	2.6	0.8
Unrealized loss on interest rate swaps	11.4	0.0
Noncash portion of interest expense	2.6	2.9
Deferred income taxes	(23.7)	(2.3)
Pension and other postretirement payments in excess of expense	(9.2)	(0.7)
Stock-based compensation	0.0	2.2
Other, net	(0.2)	(0.3)
Changes in operating assets and liabilities:
Decrease in receivables	69.3	75.2
Increase in inventory, materials, supplies, prepaid expenses and other current assets	(6.5)	(20.2)
(Decrease) increase in accounts payable	(45.5)	20.5
Increase (decrease) in accrued and other current liabilities	4.5	(35.6)
(Increase) decrease in other noncurrent assets	(6.2)	0.6
(Decrease) increase in other noncurrent liabilities	(4.5)	1.8
Net cash provided by operating activities	176.2	180.1
Cash flows from investing activities
Capital expenditures	(200.9)	(119.7)
Acquisition of business, net of cash acquired	(65.1)	0.0
Proceeds from sale of assets	2.3	0.0
Other, net	0.3	0.1
Net cash used in investing activities	(263.4)	(119.6)
Cash flows from financing activities
Net increase (decrease) in corporate credit and receivables facilities with initial maturities less than 90 days	100.0	(51.6)
Repayment of debt	(10.7)	(9.6)
Debt issuance costs	(0.7)	(0.8)
Dividends paid on preferred stock	0.0	(5.2)
Other, net	0.0	(2.0)
Net cash provided by (used in) financing activities	88.6	(69.2)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.0	0.0
Net increase (decrease) in cash, cash equivalents and restricted cash	1.4	(8.7)
Cash, cash equivalents and restricted cash at beginning of period	6.1	17.2
Cash, cash equivalents and restricted cash at end of period	7.5	8.5
Noncash investing and financing transactions:
Acquisition of property by assuming debt and other noncurrent liabilities	2.1	2.0
Acquisition of property on account	$ 65.6	$ 42.7