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v3.21.2

Accounting for Derivative Instruments and Hedging Activities - Offsetting of derivatives by counterparty master agreement level and collateral received (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
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Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid |  |
Cash collateral received in support of energy risk management activities | $ (1,748) | $ (19)
Derivative liabilities | (7,521) | (884)
Cash Collateral Posted | 21 | 50
Total Derivative Contracts |  |
Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid |  |
Gross Amounts of Recognized Assets / Liabilities | 3,678 |
Derivative Instruments | 0 |
Cash Collateral (Held) / Posted | (1,712) |
Net Amount | 1,966 |
Foreign exchange contract |  |
Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid |  |
Derivative assets | 1 |
Derivative Instruments | 0 |
Cash collateral received in support of energy risk management activities | 0 |
Net Amount | 1 |
Gross Amounts of Recognized Assets / Liabilities | 1 |
Derivative Instruments | 0 |
Cash Collateral (Held) / Posted | 0 |
Net Amount | 1 |
Commodity contracts |  |
Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid |  |
Derivative assets | 11,198 | 821
Derivative Instruments | (6,946) | (658)
Cash collateral received in support of energy risk management activities | (1,712) | (5)
Net Amount | 2,540 | 158
Derivative liabilities | (7,521) | (884)
Derivative Instruments | 6,946 | 658
Cash Collateral Posted | 0 | 0
Net Amount | (575) | (226)
Gross Amounts of Recognized Assets / Liabilities | 3,677 | (63)
Derivative Instruments | 0 | 0
Cash Collateral (Held) / Posted | (1,712) | (5)
Net Amount | $ 1,965 | $ (68)

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