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v3.21.1

Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Other comprehensive income (loss) before reclassifications |  | $ (2) |  | $ (43) |
Amounts reclassified from AOCI |  | 0 |  | 4 |
Total other comprehensive loss, net of tax | $ (2) | (2) | $ (39) | (39) |
Impact of disposal of a business |  |  | 10 |  |
Attributable to noncontrolling interests | 2 |  | (6) |  |
Attributable to NEE | (98) |  | (192) |  | $ (92)
Net Unrealized Gains (Losses) on Cash Flow Hedges |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Beginning balance | 8 |  | (27) |  |
Other comprehensive income (loss) before reclassifications |  | 0 |  | 0 |
Amounts reclassified from AOCI |  | 2 |  | 2 |
Total other comprehensive loss, net of tax |  | 2 |  | 2 |
Impact of disposal of a business |  |  | 23 |  |
Attributable to noncontrolling interests | 0 |  | 0 |  |
Attributable to NEE | 10 |  | (2) |  |
Ending balance |  | 10 |  | (2) |
Net Unrealized Gains (Losses) on Available for Sale Securities |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Beginning balance | 20 |  | 11 |  |
Other comprehensive income (loss) before reclassifications |  | (8) |  | (8) |
Amounts reclassified from AOCI |  | (3) |  | (1) |
Total other comprehensive loss, net of tax |  | (11) |  | (9) |
Impact of disposal of a business |  |  | 0 |  |
Attributable to noncontrolling interests | 0 |  | 0 |  |
Attributable to NEE | 9 |  | 2 |  |
Ending balance |  | 9 |  | 2 |
Defined Benefit Pension and Other Benefits Plans |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Beginning balance | (75) |  | (114) |  |
Other comprehensive income (loss) before reclassifications |  | 0 |  | 0 |
Amounts reclassified from AOCI |  | 1 |  | 3 |
Total other comprehensive loss, net of tax |  | 1 |  | 3 |
Impact of disposal of a business |  |  | 0 |  |
Attributable to noncontrolling interests | 0 |  | 0 |  |
Attributable to NEE | (74) |  | (111) |  |
Ending balance |  | (74) |  | (111) |
Net Unrealized Gains (Losses) on Foreign Currency Translation |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Beginning balance | (49) |  | (42) |  |
Other comprehensive income (loss) before reclassifications |  | 6 |  | (35) |
Amounts reclassified from AOCI |  | 0 |  | 0 |
Total other comprehensive loss, net of tax |  | 6 |  | (35) |
Impact of disposal of a business |  |  | (13) |  |
Attributable to noncontrolling interests | 2 |  | (6) |  |
Attributable to NEE | (47) |  | (84) |  |
Ending balance |  | (45) |  | (90) |
Other Comprehensive Income (Loss) Related to Equity Method Investees |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Beginning balance | 4 |  | 3 |  |
Other comprehensive income (loss) before reclassifications |  | 0 |  | 0 |
Amounts reclassified from AOCI |  | 0 |  | 0 |
Total other comprehensive loss, net of tax |  | 0 |  | 0 |
Impact of disposal of a business |  |  | 0 |  |
Attributable to noncontrolling interests | 0 |  | 0 |  |
Attributable to NEE | 4 |  | 3 |  |
Ending balance |  | 4 |  | 3 |
AOCI Attributable to Parent [Member] |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |
Beginning balance | (92) |  | (169) |  |
Total other comprehensive loss, net of tax | $ (5) |  | $ (33) |  |
Ending balance |  | $ (96) |  | $ (198) |

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