Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue
Services	$ 229.4	$ 221.8	$ 459.2	$ 442.6
Products	56.4	61.2	119.5	122.6
Total revenue	285.8	283.0	578.7	565.2
Costs and expenses
Cost of services, excluding items below	114.4	99.4	228.0	196.6
Cost of products sold, excluding items below	47.8	54.7	100.4	108.2
Selling, general and administrative, excluding items below	57.0	49.5	109.2	98.8
Depreciation and amortization	34.0	31.0	66.6	62.1
Restructuring charges	2.3	1.2	5.7	1.2
(Gain) loss on sale or disposal of assets, net	0.3	(0.1)	1.7	(0.1)
Curtailment loss	0.3	0.0	0.3	0.0
Transaction costs	0.0	0.0	0.0	0.7
Total operating costs and expenses	256.1	235.7	511.9	467.5
Operating income	29.7	47.3	66.8	97.7
Interest expense	28.0	39.5	60.7	78.3
Loss on extinguishment of debt	13.5	0.0	13.5	0.0
Loss from CyrusOne equity method investment	1.3	2.4	4.4	1.9
Gain on sale of CyrusOne equity method investment	(295.2)	(192.8)	(295.2)	(192.8)
Other expense (income), net	0.0	(0.9)	0.4	(1.2)
Income from continuing operations before income taxes	282.1	199.1	283.0	211.5
Income tax expense	101.4	75.4	102.0	81.9
Income from continuing operations	180.7	123.7	181.0	129.6
Income (loss) from discontinued operations (net of tax)	10.9	(9.5)	59.8	(8.4)
Net income	191.6	114.2	240.8	121.2
Preferred stock dividends	2.6	2.6	5.2	5.2
Net income applicable to common shareowners	$ 189.0	$ 111.6	$ 235.6	$ 116.0
Basic net earnings per common share
Basic earnings per common share from continuing operations	$ 0.85	$ 0.58	$ 0.84	$ 0.60
Basic earnings (loss) per common share from discontinued operations	0.05	(0.04)	0.29	(0.04)
Basic net earnings per common share	0.90	0.54	1.13	0.56
Diluted net earnings per common share
Diluted earnings per common share from continuing operations	0.84	0.58	0.84	0.59
Diluted earnings (loss) per common share from discontinued operations	0.05	(0.05)	0.28	(0.04)
Diluted net earnings per common share	$ 0.89	$ 0.53	$ 1.12	$ 0.55
Continuing Operations [Member]
Costs and expenses
Net income	$ 180.7	$ 123.7	$ 181.0	$ 129.6
Preferred stock dividends	2.6	2.6	5.2	5.2
Discontinued Operations [Member]
Costs and expenses
Selling, general and administrative, excluding items below	0.9	5.2	2.2	11.4
Depreciation and amortization	0.0	29.3	28.6	45.1
Restructuring charges	0.0	5.2	6.4	5.2
Operating income	(0.9)	(11.7)	(38.3)	(5.2)
Other expense (income), net	0.1	(1.0)	0.1	(1.9)
Income tax expense	5.1	(4.4)	32.2	(1.4)
Net income	10.9	(9.5)	59.8	(8.4)
Preferred stock dividends	$ 0.0	$ 0.0	$ 0.0	$ 0.0