Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues	$ 296.8	$ 259.4	$ 592.5	$ 509.0
Costs and expenses
Cost of services and products, excluding items below	152.3	128.9	301.7	253.0
Selling, general and administrative, excluding items below	66.1	53.8	134.5	109.1
Depreciation and amortization	50.9	47.0	102.1	92.8
Restructuring and severance related charges	4.6	3.6	4.9	29.2
Transaction and integration cost	2.7	1.7	4.9	2.3
Total operating costs and expenses	276.6	235.0	548.1	486.4
Operating income (loss)	20.2	24.4	44.4	22.6
Interest expense	31.8	18.1	62.6	36.1
Loss on extinguishment of debt	1.3	0.0	1.3	0.0
Other components of pension and postretirement benefit plans expense	3.2	3.2	6.5	6.4
Gain on sale of Investment in CyrusOne	0.0	0.0	0.0	(117.7)
Other income, net	(0.8)	(0.6)	(1.2)	(1.0)
(Loss) income before income taxes	(15.3)	3.7	(24.8)	98.8
Income tax (benefit) expense	(1.5)	1.4	(2.7)	35.9
Net (loss) income	(13.8)	2.3	(22.1)	62.9
Preferred stock dividends	2.6	2.6	5.2	5.2
Net (loss) income applicable to common shareowners	$ (16.4)	$ (0.3)	$ (27.3)	$ 57.7
Basic net (loss) earnings per common share	$ (0.39)	$ (0.01)	$ (0.64)	$ 1.37
Diluted net (loss) earnings per common share	$ (0.39)	$ (0.01)	$ (0.64)	$ 1.36