Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 413.7	$ 23.6
Receivables, less allowances of $13.0 and $13.3	153.4	199.0
Receivable from CyrusOne	8.0	0
Inventory, materials and supplies	26.4	30.7
Deferred income taxes, net	34.1	26.8
Prepaid expenses	11.1	11.8
Other current assets	3.6	11.6
Total current assets	650.3	303.5
Property, plant and equipment, net	892.5	1,587.4
Investment in CyrusOne	480.7	0
Goodwill	14.4	290.6
Intangible assets, net	92.8	196.8
Deferred income taxes, net	376.9	407.8
Other noncurrent assets	44.1	86.3
Total assets	2,551.7	2,872.4
Current liabilities
Current portion of long-term debt	508.9	13.4
Accounts payable	107.3	135.6
Payable to CyrusOne	1.0	0
Unearned revenue and customer deposits	34.3	51.2
Accrued taxes	19.7	21.6
Accrued interest	52.4	41.3
Accrued payroll and benefits	41.7	52.1
Other current liabilities	32.2	40.2
Total current liabilities	797.5	355.4
Long-term debt, less current portion	2,108.2	2,676.0
Pension and postretirement benefit obligations	262.3	362.7
Other noncurrent liabilities	70.9	176.5
Total liabilities	3,238.9	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 September 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; 208,559,589 and 202,960,430 shares issued; 208,037,869 and 202,468,710 shares outstanding at September 30, 2013 and December 31, 2012	2.1	2.0
Additional paid-in capital	2,592.1	2,590.9
Accumulated deficit	(3,235.4)	(3,208.8)
Accumulated other comprehensive loss	(173.3)	(209.7)
Common shares in treasury, at cost	(2.1)	(2.0)
Total shareowners' deficit	(687.2)	(698.2)
Total liabilities and shareowners' deficit	$ 2,551.7	$ 2,872.4