v2.4.1.9
Debt (Schedule Of Debt) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Debt Disclosure [Abstract]    
Senior notes, at par $ 429cnc_SeniorNotesAtPar $ 431cnc_SeniorNotesAtPar
Debt Instrument, Unamortized Premium 300us-gaap_DebtInstrumentUnamortizedPremium 0us-gaap_DebtInstrumentUnamortizedPremium
Interest Rate Derivative Liabilities, at Fair Value 11us-gaap_InterestRateDerivativeLiabilitiesAtFairValue 10us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
Senior notes, net 740us-gaap_SeniorNotes 441us-gaap_SeniorNotes
Line of Credit Facility, Amount Outstanding 75us-gaap_LineOfCredit 150us-gaap_LineOfCredit
Mortgage notes payable 70us-gaap_OtherNotesPayable 73us-gaap_OtherNotesPayable
Capital leases and other 8us-gaap_CapitalLeaseObligations 5us-gaap_CapitalLeaseObligations
Total debt 893us-gaap_DebtAndCapitalLeaseObligations 669us-gaap_DebtAndCapitalLeaseObligations
Less current portion 5us-gaap_LongTermDebtCurrent 3us-gaap_LongTermDebtCurrent
Long term debt $ 888us-gaap_LongTermDebtNoncurrent $ 666us-gaap_LongTermDebtNoncurrent