Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 58.2	$ 9.7
Receivables, less allowances of $9.7 and $9.9	166.5	178.6
Inventory, materials and supplies	23.4	22.7
Prepaid expenses	19.9	15.0
Other current assets	5.3	3.9
Total current assets	273.3	229.9
Property, plant and equipment, net	1,111.7	1,085.5
Available-for-sale Securities, Equity Securities	0.0	128.0
Goodwill	18.6	14.3
Deferred income taxes, net	55.1	64.5
Other noncurrent assets	23.0	18.8
Total assets	1,481.7	1,541.0
Current liabilities
Current portion of long-term debt	10.8	7.5
Accounts payable	121.5	105.9
Unearned revenue and customer deposits	33.4	36.3
Accrued taxes	12.2	12.9
Accrued interest	21.8	12.7
Accrued payroll and benefits	27.3	25.7
Other current liabilities	34.9	31.9
Total current liabilities	261.9	232.9
Long-term debt, less current portion	1,116.1	1,199.1
Pension and postretirement benefit obligations	190.2	197.7
Other noncurrent liabilities	37.5	33.0
Total liabilities	1,605.7	1,662.7
Shareowners' deficit
Preferred stock, 2,357,299 shares authorized, 155,250 shares (3,105,000 depositary shares) of 6 3/4% Cumulative Convertible Preferred Stock issued and outstanding at June 30, 2017 and December 31, 2016; liquidation preference $1,000 per share ($50 per depositary share)	129.4	129.4
Common shares, $.01 par value; 96,000,000 shares authorized; 42,173,872 and 42,056,237 shares issued; 42,173,872 and 42,056,237 shares outstanding at June 30, 2017 and December 31, 2016	0.4	0.4
Additional paid-in capital	2,568.5	2,570.9
Accumulated deficit	(2,669.6)	(2,732.1)
Accumulated other comprehensive loss	(152.7)	(90.3)
Total shareowners' deficit	(124.0)	(121.7)
Total liabilities and shareowners' deficit	$ 1,481.7	$ 1,541.0