Summary of Significant Accounting and Reporting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets - NEE's goodwill and other intangible assets are as follows:

	Weighted- Average Useful Lives	December 31,
		2015			2014
	(years)	(millions)
Goodwill (by reporting unit):
NEER segment:
Gas infrastructure, primarily Texas pipelines		$	635		$	—
Customer supply		72			72
Generation assets		43			47
Other		28			28
Total goodwill		$	778		$	147
Other intangible assets not subject to amortization, primarily land easements		$	143		$	143
Other intangible assets subject to amortization:
Customer relationships associated with gas infrastructure	40	$	720		$	—
Purchased power agreements	22	328			348
Other, primarily transmission and development rights and customer lists	22	136			139
Total		1,184			487
Accumulated amortization		(120		)	(125		)
Total other intangible assets subject to amortization - net		$	1,064		$	362