XML 89 R60.htm IDEA: XBRL DOCUMENT v3.4.0.3
Risk Management Activities and Derivative Transactions Collateral (Details)
$ in Millions
Mar. 31, 2016
USD ($)
Derivative  
Likely cash collateral obligation increase $ 22
Collateral  
Derivative  
Derivative, net liability position, aggregate fair value 1,900
Collateral obligations 1,300
Collateral already posted $ 1,300