v3.20.1

Use of Collateral (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |  |
Margin deposits | [1] | $ 327 | $ 432
Natural gas and power prepayments |  | 32 | 29
Total margin deposits and natural gas and power prepayments with our counterparties | [2] | 359 | 461
Letters of credit issued |  | 949 | 906
First priority liens under power and natural gas agreements |  | 29 | 42
First priority liens under interest rate hedging instruments |  | 156 | 31
Total letters of credit and first priority liens with our counterparties |  | 1,134 | 979
Margin deposits held by us posted by our counterparties | [1],[3] | 93 | 127
Letters of credit posted with us by our counterparties |  | 87 | 25
Total margin deposits and letters of credit posted with us by our counterparties |  | 180 | 152
Current and Non-current Derivative Assets and Liabilities |  |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |  |
Total margin deposits and natural gas and power prepayments with our counterparties | [2] | 59 | 117
Margin deposits held by us posted by our counterparties |  | 16 | 3
Other Current Liabilities |  |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |  |
Margin deposits held by us posted by our counterparties |  | 46 | 93
Prepaid Expenses and Other Current Assets |  |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |  |
Total margin deposits and natural gas and power prepayments with our counterparties | [2] | 292 | 336
Other Assets |  |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |  |
Total margin deposits and natural gas and power prepayments with our counterparties | [2] | 8 | 8
Other Noncurrent Liabilities |  |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |  |
Margin deposits held by us posted by our counterparties |  | $ 31 | $ 31
[1] | We offset fair value amounts recognized for derivative instruments executed with the same counterparty under a master netting arrangement for financial statement presentation; therefore, amounts recognized for the right to reclaim, or the obligation to return, cash collateral are presented net with the corresponding derivative instrument fair values. See Note 6 for further discussion of our derivative instruments subject to master netting arrangements.
[2] | At March 31, 2020 and December 31, 2019, $59 million and $117 million, respectively, were included in current and long-term derivative assets and liabilities, $292 million and $336 million, respectively, were included in margin deposits and other prepaid expense and $8 million and $8 million, respectively, were included in other assets on our Consolidated Condensed Balance Sheets.
[3] | At March 31, 2020 and December 31, 2019, $16 million and $3 million, respectively, were included in current and long-term derivative assets and liabilities, $46 million and $93 million, respectively, were included in other current liabilities and $31 million and $31 million, respectively, were included in other long-term liabilities on our Consolidated Condensed Balance Sheets.

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