v3.2.0.727
Use of Collateral (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Use of Collateral [Abstract]    
Margin deposits [1] $ 103 $ 96
Natural gas and power prepayments 25 22
Total margin deposits and natural gas and power prepayments with our counterparties [2] 128 118
Letters of credit issued 452 450
First priority liens under power and natural gas agreements 24 48
First priority liens under interest rate swap agreements 106 116
Total letters of credit and first priority liens with our counterparties 582 614
Margin deposits held by us posted by our counterparties [1],[3] 53 47
Letters of credit posted with us by our counterparties 52 61
Total margin deposits and letters of credit posted with us by our counterparties 105 108
Use of Collateral (Textuals) [Abstract]    
Margin And Prepayment Amounts Included In Other Assets 14 9
Margin And Prepayment Amounts Included In Margin Deposits And Other Prepaid Expenses $ 114 $ 109
[1] Balances are subject to master netting arrangements and presented on a gross basis on our Consolidated Condensed Balance Sheets. We do not offset fair value amounts recognized for derivative instruments executed with the same counterparty under a master netting arrangement for financial statement presentation, and we do not offset amounts recognized for the right to reclaim, or the obligation to return, cash collateral with corresponding derivative instrument fair values. See Note 6 for further discussion of our derivative instruments subject to master netting arrangements.
[2] At June 30, 2015 and December 31, 2014, $114 million and $109 million, respectively, were included in margin deposits and other prepaid expense and $14 million and $9 million, respectively, were included in other assets on our Consolidated Condensed Balance Sheets.
[3] Included in other current liabilities on our Consolidated Condensed Balance Sheets.