Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net income	$ 321.1	$ 93.9
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	131.0	168.6
Loss on extinguishment of debt	21.3	19.4
Provision for loss on receivables	6.5	8.2
Loss from CyrusOne equity method investment	5.2	1.9
Gain on sale of CyrusOne equity method investment	(412.9)	(192.8)
Asset impairment	0.0	7.5
Noncash portion of interest expense	3.5	4.8
Deferred income tax provision	173.1	57.8
Pension and other postretirement payments in excess of expense	(9.9)	(22.4)
Stock-based compensation	3.1	2.5
Deferred gain on sale of Wireless spectrum licenses - discontinued operations	(112.6)	0.0
Amortization of deferred gain - discontinued operations	(6.5)	(16.5)
Loss (gain) on sale or disposal of assets, net	0.3	(0.1)
Excess tax benefit for share based payments	(0.1)	(0.1)
Gain on transfer of lease obligations - discontinued operations	(15.9)	0.0
Other, net	(2.1)	(1.1)
Changes in operating assets and liabilities:
Increase in receivables	(5.9)	(35.9)
Increase in inventory, materials, supplies, prepaid expenses and other current assets	(0.3)	(2.7)
Increase in accounts payable	8.8	19.5
(Decrease) increase in accrued and other current liabilities	(19.8)	13.8
Decrease in other noncurrent assets	1.8	1.3
Increase (decrease) in other noncurrent liabilities	5.0	(6.8)
Net cash provided by operating activities	94.7	120.8
Cash flows from investing activities
Capital expenditures	(205.7)	(121.1)
Dividends received from CyrusOne	19.5	22.4
Proceeds from sale of assets	0.6	2.0
Proceeds from sale of CyrusOne equity method investment	596.3	355.9
Proceeds from sale of Wireless spectrum licenses	0.0	194.4
Other, net	(0.2)	(5.7)
Net cash provided by investing activities	410.5	447.9
Cash flows from financing activities
Net decrease in corporate credit and receivables facilities with initial maturities less than 90 days	(19.2)	(33.8)
Repayment of debt	(509.8)	(350.6)
Debt issuance costs	(0.4)	0.0
Dividends paid on preferred stock	(7.8)	(7.8)
Proceeds from exercise of options and warrants	0.0	1.2
Excess tax benefit for share based payments	0.1	0.1
Other, net	(0.6)	(0.9)
Net cash used in financing activities	(537.7)	(391.8)
Net (decrease) increase in cash and cash equivalents	(32.5)	176.9
Cash and cash equivalents at beginning of period	57.9	4.6
Cash and cash equivalents at end of period	25.4	181.5
Noncash investing and financing transactions:
Accrual of CyrusOne dividends	2.7	6.0
Acquisition of property by assuming debt and other noncurrent liabilities	4.3	0.6
Acquisition of property on account	$ 29.3	$ 42.0