v3.4.0.3
Fair Value Measurements (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Trading securities $ 15 $ 22
Available-for-sale securities 130 133
Interest rate swap agreements 63 53
Other [assets] 35 17
Fair Value, Assets Measured on Recurring Basis, Total 243 225
Other [liabilities] 142 91
Fair Value Liabilities Measured On Recurring Basis, Total 142 $ 91
Fair Value, Inputs, Level 1 [Member]    
Trading securities 15  
Available-for-sale securities 0  
Interest rate swap agreements 0  
Other [assets] 0  
Fair Value, Assets Measured on Recurring Basis, Total 15  
Other [liabilities] 0  
Fair Value Liabilities Measured On Recurring Basis, Total 0  
Fair Value, Inputs, Level 2 [Member]    
Trading securities 0  
Available-for-sale securities 124  
Interest rate swap agreements 63  
Other [assets] 15  
Fair Value, Assets Measured on Recurring Basis, Total 202  
Other [liabilities] 142  
Fair Value Liabilities Measured On Recurring Basis, Total 142  
Fair Value, Inputs, Level 3 [Member]    
Trading securities 0  
Available-for-sale securities 6  
Interest rate swap agreements 0  
Other [assets] 20  
Fair Value, Assets Measured on Recurring Basis, Total 26  
Other [liabilities] 0  
Fair Value Liabilities Measured On Recurring Basis, Total $ 0