Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 4.2	$ 4.6
Receivables, less allowances of $12.2 and $12.2	165.6	145.6
Receivable from CyrusOne	11.4	9.2
Inventory, materials and supplies	23.1	23.8
Deferred income taxes, net	51.7	55.3
Prepaid expenses	14.8	11.0
Other current assets	2.6	1.6
Total current assets	273.4	251.1
Property, plant and equipment, net	892.2	902.8
Investment in CyrusOne	462.2	471.0
Goodwill	14.4	14.4
Intangible assets, net	91.2	91.7
Deferred income taxes, net	333.3	339.7
Other noncurrent assets	34.8	36.6
Total assets	2,101.5	2,107.3
Current liabilities
Current portion of long-term debt	12.1	12.6
Accounts payable	111.3	89.4
Payable to CyrusOne	0.7	0.5
Unearned revenue and customer deposits	32.8	32.5
Accrued taxes	11.1	12.9
Accrued interest	35.0	31.6
Accrued payroll and benefits	30.9	38.0
Other current liabilities	31.8	36.8
Total current liabilities	265.7	254.3
Long-term debt, less current portion	2,244.1	2,252.6
Pension and postretirement benefit obligations	193.6	202.7
Other noncurrent liabilities	68.8	74.4
Total liabilities	2,772.2	2,784.0
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 March 31, 2014 and December 31, 2013; liquidation preference $1,000 per share ($50 per depositary share)	129.4	129.4
Common shares, $.01 par value; 480,000,000 shares authorized; 209,181,943 and 208,656,995 shares issued; 208,756,303 and 208,165,275 shares outstanding at March 31, 2014 and December 31, 2013	2.1	2.1
Additional paid-in capital	2,587.5	2,590.6
Accumulated deficit	(3,256.5)	(3,263.5)
Accumulated other comprehensive loss	(131.5)	(133.3)
Common shares in treasury, at cost	(1.7)	(2.0)
Total shareowners' deficit	(670.7)	(676.7)
Total liabilities and shareowners' deficit	$ 2,101.5	$ 2,107.3