Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 313.9	$ 207.3
Restricted cash	40.9	97.1
Accounts receivable, net	563.6	575.1
Inventories, net	690.0	709.0
Other current assets	67.3	79.8
Total Current Assets	1,675.7	1,668.3
Property, plant and equipment	9,103.5	8,955.0
Allowances for depreciation, depletion and amortization	(3,768.1)	(3,712.7)
Net property, plant and equipment	5,335.4	5,242.3
Goodwill	2,414.0	2,414.0
Other intangibles, net	504.4	508.0
Operating lease right-of-use assets, net	440.9	453.0
Other noncurrent assets	288.9	295.2
Total Assets	10,659.3	10,580.8
Current Liabilities:
Accounts payable	200.0	207.8
Accrued salaries, benefits and payroll taxes	35.9	82.6
Accrued other taxes	42.1	45.4
Accrued interest	29.8	18.3
Operating lease liabilities	47.2	48.6
Other current liabilities	93.8	96.6
Total Current Liabilities	448.8	499.3
Long-term debt	2,626.5	2,625.8
Deferred income taxes, net	777.6	781.5
Noncurrent operating lease liabilities	399.1	410.4
Other noncurrent liabilities	480.6	370.5
Total Liabilities	4,732.6	4,687.5
Equity:
Common stock, par value $0.01 per share	0.6	0.6
Preferred stock, par value $0.01 per share
Additional paid-in capital	3,441.7	3,440.8
Accumulated other comprehensive loss	(155.6)	(158.4)
Retained earnings	2,637.2	2,607.7
Total Shareholders' Equity	5,923.9	5,890.7
Noncontrolling interests	2.8	2.6
Total Equity	5,926.7	5,893.3
Total Liabilities and Equity	$ 10,659.3	$ 10,580.8