Related Party Transactions - Schedule of Related Party Transactions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	11 Months Ended															12 Months Ended				1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Data center colocation agreement provided to CBT and CBTS	Dec. 31, 2013 229 West 7th Street lease provided to CBT	Dec. 31, 2013 Goldcoast Drive lease provided to CBT [Member]	Dec. 31, 2013 Transition services provided to CBTS (network interfaces)	Dec. 31, 2013 Data center leases provided to CBTS	Dec. 31, 2013 Charges for services provided by CBT (connectivity)	Dec. 31, 2013 209 West 7th Street rent provided by CBT [Member]	Dec. 31, 2013 Management Fees with CBI [Member]	Dec. 31, 2013 Allocated employee benefit plans by CBI	Dec. 31, 2013 Allocated centralized insurance costs by CBI	Dec. 31, 2013 Selling and Marketing services provided by CBT & CBTS [Member]	Dec. 31, 2013 Interest Expense on Note with CBI [Member]	Dec. 31, 2013 Loss on Sale of Receivables [Member]	Dec. 31, 2013 Cincinnati Bell Inc. [Member]	Dec. 31, 2013 Bosselaw [Member]	Dec. 31, 2013 Jones Lang LaSalle [Member]	Dec. 31, 2013 Skadden [Member]	Dec. 31, 2013 Successor [Member]	Jan. 23, 2013 Predecessor [Member]	Dec. 31, 2012 Predecessor [Member]	Dec. 31, 2011 Predecessor [Member]	Jan. 23, 2013 Predecessor [Member] Data center colocation agreement provided to CBT and CBTS	Dec. 31, 2012 Predecessor [Member] Data center colocation agreement provided to CBT and CBTS	Dec. 31, 2011 Predecessor [Member] Data center colocation agreement provided to CBT and CBTS	Jan. 23, 2013 Predecessor [Member] 229 West 7th Street lease provided to CBT	Dec. 31, 2012 Predecessor [Member] 229 West 7th Street lease provided to CBT	Dec. 31, 2011 Predecessor [Member] 229 West 7th Street lease provided to CBT	Jan. 23, 2013 Predecessor [Member] Goldcoast Drive lease provided to CBT [Member]	Dec. 31, 2012 Predecessor [Member] Goldcoast Drive lease provided to CBT [Member]	Dec. 31, 2011 Predecessor [Member] Goldcoast Drive lease provided to CBT [Member]	Jan. 23, 2013 Predecessor [Member] Transition services provided to CBTS (network interfaces)	Dec. 31, 2012 Predecessor [Member] Transition services provided to CBTS (network interfaces)	Dec. 31, 2011 Predecessor [Member] Transition services provided to CBTS (network interfaces)	Jan. 23, 2013 Predecessor [Member] Data center leases provided to CBTS	Dec. 31, 2012 Predecessor [Member] Data center leases provided to CBTS	Dec. 31, 2011 Predecessor [Member] Data center leases provided to CBTS	Jan. 23, 2013 Predecessor [Member] Charges for services provided by CBT (connectivity)	Dec. 31, 2012 Predecessor [Member] Charges for services provided by CBT (connectivity)	Dec. 31, 2011 Predecessor [Member] Charges for services provided by CBT (connectivity)	Jan. 23, 2013 Predecessor [Member] 209 West 7th Street rent provided by CBT [Member]	Dec. 31, 2012 Predecessor [Member] 209 West 7th Street rent provided by CBT [Member]	Dec. 31, 2011 Predecessor [Member] 209 West 7th Street rent provided by CBT [Member]	Jan. 23, 2013 Predecessor [Member] Management Fees with CBI [Member]	Dec. 31, 2012 Predecessor [Member] Management Fees with CBI [Member]	Dec. 31, 2011 Predecessor [Member] Management Fees with CBI [Member]	Jan. 23, 2013 Predecessor [Member] Allocated employee benefit plans by CBI	Dec. 31, 2012 Predecessor [Member] Allocated employee benefit plans by CBI	Dec. 31, 2011 Predecessor [Member] Allocated employee benefit plans by CBI	Jan. 23, 2013 Predecessor [Member] Allocated centralized insurance costs by CBI	Dec. 31, 2012 Predecessor [Member] Allocated centralized insurance costs by CBI	Dec. 31, 2011 Predecessor [Member] Allocated centralized insurance costs by CBI	Jan. 23, 2013 Predecessor [Member] Selling and Marketing services provided by CBT & CBTS [Member]	Dec. 31, 2012 Predecessor [Member] Selling and Marketing services provided by CBT & CBTS [Member]	Dec. 31, 2011 Predecessor [Member] Selling and Marketing services provided by CBT & CBTS [Member]	Jan. 23, 2013 Predecessor [Member] Interest Expense on Note with CBI [Member]	Dec. 31, 2012 Predecessor [Member] Interest Expense on Note with CBI [Member]	Dec. 31, 2011 Predecessor [Member] Interest Expense on Note with CBI [Member]	Jan. 23, 2013 Predecessor [Member] Loss on Sale of Receivables [Member]	Dec. 31, 2012 Predecessor [Member] Loss on Sale of Receivables [Member]	Dec. 31, 2011 Predecessor [Member] Loss on Sale of Receivables [Member]
Revenue:
Total revenue	$ 21.3	$ 5.6	$ 1.7	$ 0.3	$ 0.6	$ 13.1														$ 0.4	$ 20.5	$ 18.9	$ 0.3	$ 5.4	$ 4.4	$ 0	$ 0	$ 0	$ 0	$ 0.3	$ 0.3	$ 0.1	$ 0.5	$ 0	$ 0	$ 14.3	$ 14.2
Operating costs and expenses:
Expenses to related party	2.5				1.3		1.0	0.1	0.1	0	0	0	0	0		1.6	1.5	0.2		0.4	19.2	10.2										0	1.5	0				0.1	0.7	0.7	0	0.1	0.4	0	2.5	2.3	0.2	3.5	1.8	0.1	0.4	0.4	0	0.3	0	0	7.0	1.1	0	3.2	3.5
Accounts receivable from CBI
Accounts receivable from CBI																			0.6		2.2
Accounts payable to CBI
Accounts payable																			1.7		2.9
Dividends payable																			6.8		0
Accounts payable to CBI																			8.5		2.9
Cash dividend payable (in dollars per share)															$ 0.16
Expenses to related party	$ 2.5				$ 1.3		$ 1.0	$ 0.1	$ 0.1	$ 0	$ 0	$ 0	$ 0	$ 0		$ 1.6	$ 1.5	$ 0.2		$ 0.4	$ 19.2	$ 10.2										$ 0	$ 1.5	$ 0				$ 0.1	$ 0.7	$ 0.7	$ 0	$ 0.1	$ 0.4	$ 0	$ 2.5	$ 2.3	$ 0.2	$ 3.5	$ 1.8	$ 0.1	$ 0.4	$ 0.4	$ 0	$ 0.3	$ 0	$ 0	$ 7.0	$ 1.1	$ 0	$ 3.2	$ 3.5