Summary of Significant Accounting and Reporting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of Regulatory Assets and Liabilities [Table Text Block]

NEE's and FPL's regulatory assets and liabilities are as follows:

	NEE				FPL
	December 31,				December 31,
	2016		2015		2016		2015
	(millions)
Regulatory assets:
Current:
Derivatives	$	—	$	218	$	—	$	218
Storm reserve deficiency	203		—		203		—
Other	321		285		321		284
Total	$	524	$	503	$	524	$	502
Noncurrent:
Purchased power agreement termination	$	636	$	726	$	636	$	726
Other	1,258		1,052		937		787
Total	$	1,894	$	1,778	$	1,573	$	1,513
Regulatory liabilities:
Current:
Derivatives	$	208	$	—	$	208	$	—
Other	91		14		86		12
Total	$	299	$	14	$	294	$	12
Noncurrent:
Accrued asset removal costs	$	1,956	$	1,930	$	1,944	$	1,921
Asset retirement obligation regulatory expense difference	2,294		2,182		2,294		2,182
Other	656		494		655		492
Total	$	4,906	$	4,606	$	4,893	$	4,595

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,
		2016			2015
	(years)	(millions)
Goodwill (by reporting unit):
NEER segment:
Gas infrastructure, primarily Texas pipelines		$	641		$	635
Customer supply		72			72
Generation assets		38			43
Other		28			28
Total goodwill		$	779		$	778
Other intangible assets not subject to amortization, primarily land easements		$	143		$	143
Other intangible assets subject to amortization:
Customer relationships associated with gas infrastructure	41	$	700		$	720
Purchased power agreements	22	444			328
Other, primarily transmission and development rights and customer lists	19	81			136
Total		1,225			1,184
Accumulated amortization		(115		)	(120		)
Total other intangible assets subject to amortization - net		$	1,110		$	1,064