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Summarized Financial Information of NEECH (Cash Flow Statement) (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | $ 5,225 | $ 5,329 | [1]
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases | (9,257) | (8,587) |
Proceeds from sale of the fiber-optic telecommunications business | 0 | 1,482 | [1]
Capital contribution to Subsidiary | 0 | 0 |
Sale of independent power and other investments of NEER | 327 | 159 | [1]
Proceeds from sale or maturity of securities in special use funds | 2,579 | 2,059 | [1]
Purchases of securities in special use funds | (2,860) | (2,146) | [1]
Distributions from equity method investees | 637 | 7 | [1]
Other - net | 13 | 175 | [1]
Net cash used in investing activities | (8,561) | (6,851) | [1]
Proceeds from Issuance of Long-term Debt | 4,028 | 5,196 | [1]
Retirements of long-term debt | (2,593) | (3,892) | [1]
Proceeds from differential membership investors | 103 | 340 | [1]
Net change in commercial paper | 773 | 1,806 | [1]
Proceeds from other short-term debt | 625 | 200 | [1]
Repayments of other short-term debt | (450) | (2) | [1]
Payments from related parties under CSCS agreement – net | 720 | 0 | [1]
Proceeds from Issuance of Common Stock | 714 | 36 | [1]
Payments of Dividends | (1,570) | (1,382) | [1]
Cash Dividends Received from (Paid to) Parent Company | 0 | 0 |
Other - net | (275) | (540) | [1]
Net cash provided by (used in) financing activities | 2,075 | 1,762 | [1]
Effects of currency translation on cash, cash equivalents and restricted cash | (1) | 0 | [1]
Net increase (decrease) in cash, cash equivalents and restricted cash | (1,262) | 240 | [1]
Cash, cash equivalents and restricted cash at beginning of period | 1,983 | 1,529 | [1]
Cash, cash equivalents and restricted cash at end of period | 721 | 1,769 | [1]
Reportable Legal Entities [Member] | NextEra Energy (Guarantor) [Member] |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 2,839 | 1,464 |
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases | (124) | 0 |
Proceeds from sale of the fiber-optic telecommunications business | 0 | 0 |
Capital contribution to Subsidiary | (1,798) | (46) |
Sale of independent power and other investments of NEER | 0 | 0 |
Proceeds from sale or maturity of securities in special use funds | 0 | 0 |
Purchases of securities in special use funds | 0 | 0 |
Distributions from equity method investees | 0 | 0 |
Other - net | 12 | 7 |
Net cash used in investing activities | (1,910) | (39) |
Proceeds from Issuance of Long-term Debt | 0 | 0 |
Retirements of long-term debt | 0 | 0 |
Proceeds from differential membership investors | 0 | 0 |
Net change in commercial paper | 0 | 0 |
Proceeds from other short-term debt | 0 | 0 |
Repayments of other short-term debt | 0 | 0 |
Payments from related parties under CSCS agreement – net | 0 | 0 |
Proceeds from Issuance of Common Stock | 714 | 36 |
Payments of Dividends | (1,570) | (1,382) |
Cash Dividends Received from (Paid to) Parent Company | 0 | 0 |
Other - net | (73) | (79) |
Net cash provided by (used in) financing activities | (929) | (1,425) |
Effects of currency translation on cash, cash equivalents and restricted cash | 0 | 0 |
Net increase (decrease) in cash, cash equivalents and restricted cash | 0 | 0 |
Cash, cash equivalents and restricted cash at beginning of period | 1 | 1 |
Cash, cash equivalents and restricted cash at end of period | 1 | 1 |
Reportable Legal Entities [Member] | NEECH Non-Guarantor Subsidiaries [Member] |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 1,578 | 1,937 |
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases | (5,536) | (4,808) |
Proceeds from sale of the fiber-optic telecommunications business | 0 | 1,482 |
Capital contribution to Subsidiary | 0 | 0 |
Sale of independent power and other investments of NEER | 327 | 159 |
Proceeds from sale or maturity of securities in special use funds | 955 | 819 |
Purchases of securities in special use funds | (1,074) | (827) |
Distributions from equity method investees | 637 | 0 |
Other - net | (203) | 177 |
Net cash used in investing activities | (4,894) | (2,998) |
Proceeds from Issuance of Long-term Debt | 2,434 | 4,995 |
Retirements of long-term debt | (1,014) | (3,819) |
Proceeds from differential membership investors | 103 | 340 |
Net change in commercial paper | 2,255 | 995 |
Proceeds from other short-term debt | 625 | 0 |
Repayments of other short-term debt | (200) | 0 |
Payments from related parties under CSCS agreement – net | 720 | 0 |
Proceeds from Issuance of Common Stock | 0 | 0 |
Payments of Dividends | 0 | 0 |
Cash Dividends Received from (Paid to) Parent Company | (2,727) | (722) |
Other - net | (172) | (457) |
Net cash provided by (used in) financing activities | 2,024 | 1,332 |
Effects of currency translation on cash, cash equivalents and restricted cash | (1) | 0 |
Net increase (decrease) in cash, cash equivalents and restricted cash | (1,293) | 271 |
Cash, cash equivalents and restricted cash at beginning of period | 1,807 | 1,375 |
Cash, cash equivalents and restricted cash at end of period | 514 | 1,646 |
Consolidation, Eliminations [Member] |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 808 | 1,928 |
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases | (3,597) | (3,779) |
Proceeds from sale of the fiber-optic telecommunications business | 0 | 0 |
Capital contribution to Subsidiary | 1,798 | 46 |
Sale of independent power and other investments of NEER | 0 | 0 |
Proceeds from sale or maturity of securities in special use funds | 1,624 | 1,240 |
Purchases of securities in special use funds | (1,786) | (1,319) |
Distributions from equity method investees | 0 | 7 |
Other - net | 204 | (9) |
Net cash used in investing activities | (1,757) | (3,814) |
Proceeds from Issuance of Long-term Debt | 1,594 | 201 |
Retirements of long-term debt | (1,579) | (73) |
Proceeds from differential membership investors | 0 | 0 |
Net change in commercial paper | (1,482) | 811 |
Proceeds from other short-term debt | 0 | 200 |
Repayments of other short-term debt | (250) | (2) |
Payments from related parties under CSCS agreement – net | 0 | 0 |
Proceeds from Issuance of Common Stock | 0 | 0 |
Payments of Dividends | 0 | 0 |
Cash Dividends Received from (Paid to) Parent Company | 2,727 | 722 |
Other - net | (30) | (4) |
Net cash provided by (used in) financing activities | 980 | 1,855 |
Effects of currency translation on cash, cash equivalents and restricted cash | 0 | 0 |
Net increase (decrease) in cash, cash equivalents and restricted cash | 31 | (31) |
Cash, cash equivalents and restricted cash at beginning of period | 175 | 153 |
Cash, cash equivalents and restricted cash at end of period | $ 206 | $ 122 |
[1] | Prior period amounts have been retrospectively adjusted as discussed in Note 11 - Restricted Cash.

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