Consolidated and Combined Statements of Equity and Partnership Capital (Parenthetical) (USD $)	11 Months Ended		1 Months Ended
	Dec. 31, 2013 Successor [Member]	Dec. 31, 2012 CyrusOne L.P. [Member] Predecessor [Member]	Jan. 23, 2013 CyrusOne L.P. [Member] Predecessor [Member] Partnership Units	Dec. 31, 2013 CyrusOne L.P. [Member] Successor [Member]
Common stock issued (in shares)	21,991,669	100		21,991,669
Common stock par value (in dollars per share)	$ 0.01	$ 0.01		$ 0.01
Dividends declared per share (in dollars per share)	$ 0.64
Partnership reverse unit split, conversion ratio			2.8