Annual report pursuant to Section 13 and 15(d)

INVESTMENTS (Details 5)

v2.4.1.9
INVESTMENTS (Details 5) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale securities, within 1 year, cost $ 1,589us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost  
Available-for-sale securities, within 1 year, fair value 1,489us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue  
Available-for-sale securities, after 1 years through 5 years, cost 1,709us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost  
Available-for-sale securities, after 1 years through 5 years, fair value 1,747us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue  
Available-for-sale securities, after 5 years through 10 years, cost 118us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost  
Available-for-sale securities, after 5 years through 10 years, fair value 130us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue  
Available-for-sale securities, after 10 years, cost 380us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost  
Available-for-sale securities, after 10 years, fair value 392us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue  
Cost Method Investments [Abstract]    
Cost method investments, carrying value $ 166us-gaap_CostMethodInvestments $ 162us-gaap_CostMethodInvestments