XML 15 R54.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes (Details 2) (QSC, USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
QSC
      
Income taxes      
Amount paid to QSC $ 861ctq_IncomeTaxesAmountPaidtoAffiliates
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ctq_QwestServicesCorporationMember		 $ 750ctq_IncomeTaxesAmountPaidtoAffiliates
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ctq_QwestServicesCorporationMember		 $ 607ctq_IncomeTaxesAmountPaidtoAffiliates
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ctq_QwestServicesCorporationMember