Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Subsidiary	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Minimum [Member]	Sep. 30, 2014 Maximum [Member]	Jan. 23, 2013 Cincinnati Bell Inc. [Member]	Jun. 26, 2014 Cincinnati Bell Inc. [Member] Maximum [Member]
Income Taxes [Line Items]
Percentage of taxable income						90.00%	100.00%
Number of subsidiaries as taxable REIT			2
Income tax expense	$ 0.4	$ 0.3	$ 1.1	$ 1.2
Taxes payable	1.8		1.8		1.4
Remaining combined interest held								66.10%	50.00%
Deferred tax assets, net	3.6		3.6		3.6
Valuation allowance and reserves	$ 3.6		$ 3.6		$ 3.6