Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 111.2	$ 84.8	$ 286.0	$ 244.0
Costs and expenses:
Property operating expenses	42.2	33.0	107.3	92.5
Sales and marketing	3.2	3.2	8.9	9.7
General and administrative	12.5	9.0	31.5	24.7
Depreciation and amortization	39.1	30.0	101.6	87.4
Transaction and acquisition integration costs	1.8	0.0	11.5	0.9
Asset impairments and loss on disposal	4.9	0.0	13.5	0.0
Total costs and expenses	103.7	75.2	274.3	215.2
Operating income	7.5	9.6	11.7	28.8
Interest expense	12.1	9.0	29.2	30.4
Net income (loss) before income taxes	(4.6)	0.6	(17.5)	(1.6)
Income tax expense	(0.7)	(0.4)	(1.5)	(1.1)
Net income (loss)	(5.3)	0.2	(19.0)	(2.7)
Noncontrolling interest in net income (loss)	(0.7)	0.1	(4.6)	(1.9)
Net income (loss) attributed to common shareholders	$ (4.6)	$ 0.1	$ (14.4)	$ (0.8)
Basic weighted average common shares outstanding (in shares)	64.3	36.9	50.6	26.5
Diluted weighted average common shares outstanding (in shares)	64.3	36.9	50.6	26.5
Income (loss) per share - basic and diluted (in dollars per share)	$ (0.08)	$ 0.00	$ (0.30)	$ (0.06)
Dividends declared per share (in dollars per share)	$ 0.315	$ 0.21	$ 0.945	$ 0.63
CyrusOne LP
Revenue	$ 111.2	$ 84.8	$ 286.0	$ 244.0
Costs and expenses:
Property operating expenses	42.2	33.0	107.3	92.5
Sales and marketing	3.2	3.2	8.9	9.7
General and administrative	12.5	9.0	31.5	24.7
Depreciation and amortization	39.1	30.0	101.6	87.4
Transaction and acquisition integration costs	1.8	0.0	11.5	0.9
Asset impairments and loss on disposal	4.9	0.0	13.5	0.0
Total costs and expenses	103.7	75.2	274.3	215.2
Operating income	7.5	9.6	11.7	28.8
Interest expense	12.1	9.0	29.2	30.4
Net income (loss) before income taxes	(4.6)	0.6	(17.5)	(1.6)
Income tax expense	(0.7)	(0.4)	(1.5)	(1.1)
Net income (loss)	$ (5.3)	$ 0.2	$ (19.0)	$ (2.7)