Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities
Net income	$ 7.0	$ 49.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, Amortization and Accretion, Net	43.4	61.2
Gain on extinguishment of debt	(2.4)	0.0
Provision for loss on receivables	1.9	2.1
Noncash portion of interest expense	1.0	1.4
Deferred income tax provision	4.4	27.8
Pension and other postretirement payments in excess of expense	(1.3)	(3.6)
Stock-based compensation	1.2	1.3
Deferred gain on sale of wireless spectrum licenses - discontinued operations	0.0	(112.6)
Amortization of deferred gain - discontinued operations	0.0	(6.5)
Other, net	(1.5)	6.7
Changes in operating assets and liabilities:
Decrease (increase) in receivables	17.2	(1.9)
(Increase) decrease in inventory, materials, supplies, prepaid expenses and other current assets	(4.7)	1.2
Decrease in accounts payable	(3.2)	(24.2)
Increase in accrued and other current liabilities	2.8	2.4
Decrease in other noncurrent assets	0.5	0.1
(Decrease) increase in other noncurrent liabilities	(0.3)	1.7
Net cash provided by operating activities	66.0	6.3
Cash flows from investing activities
Capital expenditures	(62.4)	(57.9)
Dividends received from CyrusOne	2.1	6.0
Other, net	(0.1)	(0.1)
Net cash used in investing activities	(60.4)	(52.0)
Cash flows from financing activities
Net increase in corporate credit and receivables facilities with initial maturities less than 90 days	28.9	7.5
Repayment of debt	(30.9)	(3.3)
Dividends paid on preferred stock	(2.6)	(2.6)
Other, net	(0.5)	(0.4)
Net cash (used in) provided by financing activities	(5.1)	1.2
Net increase (decrease) in cash and cash equivalents	0.5	(44.5)
Cash and cash equivalents at beginning of period	7.4	57.9
Cash and cash equivalents at end of period	7.9	13.4
Noncash investing and financing transactions:
Accrual of CyrusOne dividends	2.7	9.0
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed	7.1	1.3
Acquisition of property on account	$ 27.3	$ 28.9