Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 9.6	$ 7.4
Receivables, less allowances of $11.9 and $12.4	157.5	157.1
Inventory, materials and supplies	23.1	20.6
Prepaid expenses	15.7	13.1
Other current assets	3.0	2.2
Total current assets	208.9	200.4
Property, plant and equipment, net	1,021.7	975.5
Investment in CyrusOne	27.4	55.5
Goodwill	14.3	14.3
Deferred income taxes, net	132.5	182.9
Other noncurrent assets	18.4	17.8
Total assets	1,423.2	1,446.4
Current liabilities
Current portion of long-term debt	14.7	13.8
Accounts payable	142.5	128.9
Unearned revenue and customer deposits	26.7	29.2
Accrued taxes	12.0	14.5
Accrued interest	8.0	11.2
Accrued payroll and benefits	27.9	31.2
Other current liabilities	24.5	25.0
Other current liabilities from discontinued operations	0.6	5.4
Total current liabilities	256.9	259.2
Long-term debt, less current portion	1,125.7	1,223.8
Pension and postretirement benefit obligations	217.5	225.0
Other noncurrent liabilities	40.1	36.6
Total liabilities	1,640.2	1,744.6
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, 2016 and December 31, 2015; liquidation preference $1,000 per share ($50 per depositary share)	129.4	129.4
Common shares, $.01 par value; 480,000,000 shares authorized; 209,277,290 and 210,017,999 shares issued; 209,136,240 and 209,876,949 shares outstanding at June 30, 2016 and December 31, 2015	2.1	2.1
Additional paid-in capital	2,569.6	2,576.0
Accumulated deficit	(2,749.6)	(2,834.2)
Accumulated other comprehensive loss	(168.0)	(171.0)
Common shares in treasury, at cost	(0.5)	(0.5)
Total shareowners' deficit	(217.0)	(298.2)
Total liabilities and shareowners' deficit	$ 1,423.2	$ 1,446.4