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Guarantees (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Surety Bond [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations $ 47.7us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_SuretyBondMember
Commercial standby letters of credit [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations 113.9us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_FinancialStandbyLetterOfCreditMember
Bank Gurantees [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations 55.1us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_FinancialGuaranteeMember
Bank Gurantees Collaterized [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations $ 15.2us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= cik0000739708_BankGuranteesCollaterizedMember