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Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative assets | $ 2,951 | $ 1,824
Derivative Asset, Current | 1,392 | 689
Derivative Asset, Noncurrent | 1,559 | 1,135
Derivative liability | 5,285 | 2,976
Derivative Liability, Current | 2,856 | 1,263
Derivative Liability, Noncurrent | 2,429 | 1,713
Current Derivative Assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 573 | 150
Non Current Derivative Assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 74 | 56
Current derivative liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Collateral, Right to Reclaim Cash, Offset | 87 | 6
Non Current derivative liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Collateral, Right to Reclaim Cash, Offset | 985 | 172
Commodity contracts | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 2,757 | 1,757
Derivative liability | 4,875 | 2,198
Derivative asset, netting | (12,708) | (6,622)
Derivative liability, netting | (13,133) | (6,594)
Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 4,327 | 1,896
Derivative Liability, Gross Liability | 5,926 | 2,571
Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 9,170 | 5,082
Derivative Liability, Gross Liability | 9,042 | 4,990
Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 1,968 | 1,401
Derivative Liability, Gross Liability | 3,040 | 1,231
Interest rate contracts | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 210 | 76
Derivative liability | 354 | 709
Derivative asset, netting | (33) | (30)
Derivative liability, netting | (33) | (30)
Interest rate contracts | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 0 | 0
Derivative Liability, Gross Liability | 0 | 0
Interest rate contracts | Level 2 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 243 | 106
Derivative Liability, Gross Liability | 387 | 739
Interest rate contracts | Level 3 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 0 | 0
Derivative Liability, Gross Liability | 0 | 0
Foreign currency contracts | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | (16) | (9)
Derivative liability | 56 | 69
Derivative asset, netting | (37) | (17)
Derivative liability, netting | (37) | (17)
Foreign currency contracts | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 0 | 0
Derivative Liability, Gross Liability | 0 | 0
Foreign currency contracts | Level 2 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 21 | 8
Derivative Liability, Gross Liability | 93 | 86
Foreign currency contracts | Level 3 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 0 | 0
Derivative Liability, Gross Liability | 0 | 0
Florida Power & Light Company |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability |  | 10
Florida Power & Light Company | Current other assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Current | 6 | 13
Florida Power & Light Company | Current other liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Current | 14 | 9
Florida Power & Light Company | Noncurrent other liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Noncurrent |  | 1
Florida Power & Light Company | Commodity contracts | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 6 | 13
Derivative liability | 14 | 10
Derivative asset, netting | (9) | (3)
Derivative liability, netting | (9) | (3)
Florida Power & Light Company | Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 0 | 0
Derivative Liability, Gross Liability | 0 | 0
Florida Power & Light Company | Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 8 | 3
Derivative Liability, Gross Liability | 6 | 8
Florida Power & Light Company | Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Gross Asset | 7 | 13
Derivative Liability, Gross Liability | $ 17 | $ 5

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