Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 17.8	$ 9.7
Restricted Cash, Current	378.7	0.0
Receivables, less allowances of $10.4 and $9.9	239.8	178.6
Inventory, materials and supplies	44.3	22.7
Prepaid expenses	22.2	15.0
Other current assets	7.6	3.9
Total current assets	710.4	229.9
Property, plant and equipment, net	1,129.0	1,085.5
Investment in CyrusOne	0.0	128.0
Goodwill	151.0	14.3
Intangible assets, net	132.3	0.0
Deferred income tax assets	19.3	64.5
Other noncurrent assets	20.4	18.8
Total assets	2,162.4	1,541.0
Current liabilities
Current portion of long-term debt	18.4	7.5
Accounts payable	185.6	105.9
Unearned revenue and customer deposits	36.3	36.3
Accrued taxes	21.2	12.9
Accrued interest	29.9	12.7
Accrued payroll and benefits	28.7	25.7
Other current liabilities	37.2	31.9
Total current liabilities	357.3	232.9
Long-term debt, less current portion	1,729.3	1,199.1
Pension and postretirement benefit obligations	177.5	197.7
Deferred income tax liabilities	11.2	0.0
Other noncurrent liabilities	30.2	33.0
Total liabilities	2,305.5	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 December 31, 2017 and 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; 42,197,965 and 42,056,237 shares issued and outstanding at December 31, 2017 and 2016, respectively	0.4	0.4
Additional paid-in capital	2,565.6	2,570.9
Accumulated deficit	(2,664.8)	(2,732.1)
Accumulated other comprehensive loss	(173.7)	(90.3)
Total shareowners' deficit	(143.1)	(121.7)
Total liabilities and shareowners' deficit	$ 2,162.4	$ 1,541.0