XML 52 R34.htm IDEA: XBRL DOCUMENT v2.4.1.9
Investment in CyrusOne - Schedule of Related Party Transactions (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Mar. 31, 2013
Amounts receivable from and payable to CyrusOne        
Dividends receivable $ 9.0us-gaap_DividendsReceivable     $ 9.3us-gaap_DividendsReceivable
Receivable from CyrusOne 9.6us-gaap_DueFromRelatedPartiesCurrent   7.7us-gaap_DueFromRelatedPartiesCurrent  
Payable to CyrusOne 1.3us-gaap_DueToRelatedPartiesCurrent   0.4us-gaap_DueToRelatedPartiesCurrent  
CyrusOne [Member]        
Related Party Transaction [Line Items]        
Income Tax Receivable from Related Party 0.5cbb_IncomeTaxReceivablefromRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
  1.7cbb_IncomeTaxReceivablefromRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
 
Revenue:        
Services provided to CyrusOne 0.3us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
0.5us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
   
Operating costs and expenses:        
Charges for services provided by CyrusOne 2.5us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
2.3us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
   
Administrative services provided to CyrusOne (0.1)us-gaap_RecoveryOfDirectCosts
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
(0.1)us-gaap_RecoveryOfDirectCosts
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
   
Total operating costs and expenses 2.4us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
2.2us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
   
Amounts receivable from and payable to CyrusOne        
Accounts receivable 0.6us-gaap_AccountsReceivableRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
  1.7us-gaap_AccountsReceivableRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
 
Dividends receivable 9.0us-gaap_DividendsReceivable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
  6.0us-gaap_DividendsReceivable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
 
Receivable from CyrusOne 9.6us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
  7.7us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
 
Accounts payable 1.3us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
  0.4us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
 
Payable to CyrusOne $ 1.3us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember
  $ 0.4us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cbb_CyrusoneMember