Oncor-Related Transactions	6 Months Ended
Jun. 30, 2017
Business Combinations [Abstract]
Oncor-Related Transactions	Oncor-Related Transactions From July 2016 through October 2016, NEE and certain of its affiliates entered into several agreements with Energy Future Holdings Corp. (EFH) and Energy Future Intermediate Holding Company LLC (EFIH), Texas Transmission Holdings Corporation (TTHC), Oncor Management Investment LLC and certain of their affiliates, which would have resulted in NEE owning 100% of Oncor Electric Delivery Company LLC (Oncor) if the transactions contemplated by those agreements would have been consummated. The agreements with EFH and EFIH and TTHC were subject to, among other things, approval by the Public Utility Commission of Texas (PUCT) and FERC (which FERC approval was received in January 2017), as well as receipt of a supplemental private letter ruling from the Internal Revenue Service. On April 13, 2017, the PUCT issued a final order denying NEE's purchase of Oncor because the PUCT found that the transactions by which NEE would acquire all equity interests in Oncor were not in the public interest. The PUCT denied NEE's most recent motion for rehearing on June 29, 2017. On July 6, 2017, EFH and EFIH provided a written notice (notice) to NEE terminating the agreement and plan of merger, dated as of July 29, 2016, as amended (merger agreement), under which EFH Merger Co., LLC (Merger Sub), a direct wholly owned subsidiary of NEE, would have acquired 100% of the equity of reorganized EFH and certain of its subsidiaries, including its indirect ownership of approximately 80% of the outstanding equity interests of Oncor. The notice provided a number of purported bases for the termination. On July 7, 2017, NEE and Merger Sub provided a written reply to the notice to EFH and EFIH indicating that NEE and Merger Sub do not agree that the bases for termination of the merger agreement represent valid or effective bases for termination of the merger agreement, other than termination as a result of the fact that specified approvals and rulings were not obtained by a deadline prescribed in the merger agreement. NEE and Merger Sub believe they are entitled to a $275 million termination fee as a result of the termination of the merger agreement if any alternative transactions are consummated and are pursuing their rights accordingly.

Oncor-Related Transactions

From July 2016 through October 2016, NEE and certain of its affiliates entered into several agreements with Energy Future Holdings Corp. (EFH) and Energy Future Intermediate Holding Company LLC (EFIH), Texas Transmission Holdings Corporation (TTHC), Oncor Management Investment LLC and certain of their affiliates, which would have resulted in NEE owning 100% of Oncor Electric Delivery Company LLC (Oncor) if the transactions contemplated by those agreements would have been consummated. The agreements with EFH and EFIH and TTHC were subject to, among other things, approval by the Public Utility Commission of Texas (PUCT) and FERC (which FERC approval was received in January 2017), as well as receipt of a supplemental private letter ruling from the Internal Revenue Service. On April 13, 2017, the PUCT issued a final order denying NEE's purchase of Oncor because the PUCT found that the transactions by which NEE would acquire all equity interests in Oncor were not in the public interest. The PUCT denied NEE's most recent motion for rehearing on June 29, 2017. On July 6, 2017, EFH and EFIH provided a written notice (notice) to NEE terminating the agreement and plan of merger, dated as of July 29, 2016, as amended (merger agreement), under which EFH Merger Co., LLC (Merger Sub), a direct wholly owned subsidiary of NEE, would have acquired 100% of the equity of reorganized EFH and certain of its subsidiaries, including its indirect ownership of approximately 80% of the outstanding equity interests of Oncor. The notice provided a number of purported bases for the termination. On July 7, 2017, NEE and Merger Sub provided a written reply to the notice to EFH and EFIH indicating that NEE and Merger Sub do not agree that the bases for termination of the merger agreement represent valid or effective bases for termination of the merger agreement, other than termination as a result of the fact that specified approvals and rulings were not obtained by a deadline prescribed in the merger agreement. NEE and Merger Sub believe they are entitled to a $275 million termination fee as a result of the termination of the merger agreement if any alternative transactions are consummated and are pursuing their rights accordingly.