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Business Acquisitions (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Business Acquisition [Line Items] |  |  |  |
Acquisitions related costs |  | $ 69 | $ 135 | $ 26
Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Membership interests acquired | 100.00% |  |  |
Noncontrolling interest ownership percentage | 10.00% |  |  |
Aggregate purchase price | $ 2,000 |  |  |
Cash consideration | 934 |  |  |
Debt assumed | 706 |  |  |
Working capital adjustments | 2 |  |  |
Goodwill expected to be deductible | $ 380 |  |  |
Period goodwill is expected to be deductible (in years) | 15 years |  |  |
NEP [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisitions related costs |  |  |  | $ 13
Contingent Holdback [Member] | Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Contingent consideration liability | $ 200 |  |  |
Indemnity Holdback [Member] | Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Contingent consideration liability | 200 |  |  |
Noncurrent other liabilities [Member] | Contingent Holdback [Member] | Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Contingent consideration liability | 186 |  |  |
Noncurrent other liabilities [Member] | Indemnity Holdback [Member] | Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Contingent consideration liability | $ 186 |  |  |
Other Current Liabilities [Member] | Contingent Holdback [Member] | Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Contingent consideration liability |  | 0 |  |
Other Current Liabilities [Member] | Indemnity Holdback [Member] | Subsidiary of NextEra Energy Partners [Member] | NET Holdings Management, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Contingent consideration liability |  |  | $ 199 |
Escrow deposit disbursements related to property acquisition |  | $ 200 |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of escrow deposit disbursements related to property acquisition in noncash investing or financing transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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