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Asset Retirement Obligations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Asset retirement obligation, roll forward analysis [Roll Forward] |  |
Beginning balance | $ 3,179 | $ 3,166
Liabilities incurred | 82 | 79
Accretion expense | 145 | 141
Liabilities settled | (80) | (88)
Revision in estimated cash flows – net | 2 | (119)
Ending balance | 3,328 | 3,179
Current portion | 83 | 97
Liabilities settled related to project sales and other disposals | 27 | 35
Restricted funds included in special use funds [Abstract] |  |
Restricted funds | $ 7,495 | 8,846
St. Lucie Units Number One |  |
Asset retirement obligation, roll forward analysis [Roll Forward] |  |
License renewal period | 20 years |
St. Lucie Units Number Two |  |
Asset retirement obligation, roll forward analysis [Roll Forward] |  |
License renewal period | 20 years |
FPL [Member] |  |
Asset retirement obligation, roll forward analysis [Roll Forward] |  |
Beginning balance | $ 2,107 | 1,936
Liabilities incurred | 0 | 7
Accretion expense | 81 | 78
Liabilities settled | (22) | (15)
Revision in estimated cash flows – net | 10 | 101
Ending balance | 2,176 | 2,107
Current portion | 68 | 58
Restricted funds included in special use funds [Abstract] |  |
Restricted funds | $ 5,220 | $ 6,082
FPL [Member] | St. Lucie Units Number Two |  |
Asset retirement obligation, roll forward analysis [Roll Forward] |  |
License renewal period | 20 years |

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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 25 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=116646717&loc=d3e6290-110844 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of asset retirement obligations incurred during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(4) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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