Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 5.5	$ 23.6
Receivables, less allowances of $13.4 and $13.3	148.3	199.0
Receivable from CyrusOne	7.9	0
Inventory, materials and supplies	26.0	30.7
Deferred income taxes, net	29.9	26.8
Prepaid expenses	12.5	11.8
Other current assets	1.4	11.6
Total current assets	231.5	303.5
Property, plant and equipment, net	879.0	1,587.4
Investment in CyrusOne	489.3	0
Goodwill	14.4	290.6
Intangible assets, net	93.2	196.8
Deferred income taxes, net	396.9	407.8
Other noncurrent assets	41.1	86.3
Total assets	2,145.4	2,872.4
Current liabilities
Current portion of long-term debt	7.2	13.4
Accounts payable	103.1	135.6
Payable to CyrusOne	1.8	0
Unearned revenue and customer deposits	32.5	51.2
Accrued taxes	14.1	21.6
Accrued interest	37.4	41.3
Accrued payroll and benefits	44.9	52.1
Other current liabilities	33.7	40.2
Total current liabilities	274.7	355.4
Long-term debt, less current portion	2,183.0	2,676.0
Pension and postretirement benefit obligations	333.6	362.7
Other noncurrent liabilities	73.8	176.5
Total liabilities	2,865.1	3,570.6
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, 2013 and December 31, 2012; liquidation preference $1,000 per share ($50 per depositary share)	129.4	129.4
Common shares, $.01 par value; 480,000,000 shares authorized; 208,489,900 and 202,960,430 shares issued; 207,968,180 and 202,468,710 shares outstanding at June 30, 2013 and December 31, 2012	2.1	2.0
Additional paid-in capital	2,593.7	2,590.9
Accumulated deficit	(3,244.7)	(3,208.8)
Accumulated other comprehensive loss	(198.1)	(209.7)
Common shares in treasury, at cost	(2.1)	(2.0)
Total shareowners' deficit	(719.7)	(698.2)
Total liabilities and shareowners' deficit	$ 2,145.4	$ 2,872.4