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Supplemental Financial Information (Condensed Consolidated Statement of Cash Flows) (Details) $ in Millions, $ in Millions |  | 12 Months Ended
--- | --- | ---
Jun. 14, 2019 USD ($) | Dec. 31, 2019 CAD ($) | Dec. 31, 2018 CAD ($)
Operating activities |  |  |
Net cash provided by (used in) operating activities |  | $ 1,525 | $ 1,690
Investing activities |  |  |
Additions to property, plant and equipment |  | (2,495) | (2,162)
Net purchase of investments subject to significant influence, inclusive of acquisition costs |  | (3) | (49)
Proceeds on disposal of assets |  | 875 | 0
Other investing activities |  | 6 | 21
Net cash provided by (used in) investing activities |  | (1,617) | (2,190)
Financing activities |  |  |
Change in short-term debt, net |  | 413 | (162)
Proceeds from long-term debt, net of issuance costs |  | 1,066 | 1,055
Retirement of long-term debt |  | (1,103) | (757)
Net borrowings (repayments) under committed credit facilities |  | (118) | 321
Issuance of common and preferred stock |  | 203 | 301
Dividends paid |  | (423) | (382)
Other financing activities |  | (24) | (32)
Net cash provided by financing activities |  | 14 | 344
Effect of exchange rate changes on cash, cash equivalents, and restricted cash |  | (20) | 25
Net increase (decrease) in cash, cash equivalents, and restricted cash |  | (98) | (131)
Cash, cash equivalents, and restricted cash, beginning of year |  | 372 | 503
Cash, cash equivalents, and restricted cash, end of year |  | 274 | 372
Eliminations |  |  |
Operating activities |  |  |
Net cash provided by (used in) operating activities |  | (20) | (267)
Investing activities |  |  |
Additions to property, plant and equipment |  | 0 | 0
Net purchase of investments subject to significant influence, inclusive of acquisition costs |  | 0 | 0
Proceeds on disposal of assets |  | 0 |
Other investing activities |  | (960) | 572
Net cash provided by (used in) investing activities |  | (960) | 572
Financing activities |  |  |
Change in short-term debt, net |  | 0 | 0
Proceeds from long-term debt, net of issuance costs |  | 520 | (194)
Retirement of long-term debt |  | 17 | 0
Net borrowings (repayments) under committed credit facilities |  | (28) | 110
Issuance of common and preferred stock |  | 562 | (446)
Dividends paid |  | 157 | 348
Other financing activities |  | (248) | (123)
Net cash provided by financing activities |  | 980 | (305)
Effect of exchange rate changes 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, beginning of year |  | 0 | 0
Cash, cash equivalents, and restricted cash, end of year |  | 0 | 0
Emera Inc. |  |  |
Financing activities |  |  |
Retirement of long-term debt | $ (500) |  |
Emera Inc. | Reportable Legal Entities |  |  |
Operating activities |  |  |
Net cash provided by (used in) operating activities |  | 133 | 191
Investing activities |  |  |
Additions to property, plant and equipment |  | (2) | (9)
Net purchase of investments subject to significant influence, inclusive of acquisition costs |  | 0 | 0
Proceeds on disposal of assets |  | 0 |
Other investing activities |  | (402) | (489)
Net cash provided by (used in) investing activities |  | (404) | (498)
Financing activities |  |  |
Change in short-term debt, net |  | 399 | 0
Proceeds from long-term debt, net of issuance costs |  | 0 | 0
Retirement of long-term debt |  | (225) | 0
Net borrowings (repayments) under committed credit facilities |  | 146 | 136
Issuance of common and preferred stock |  | 203 | 301
Dividends paid |  | (423) | (382)
Other financing activities |  | (1) | 0
Net cash provided by financing activities |  | 99 | 55
Effect of exchange rate changes on cash, cash equivalents, and restricted cash |  | 147 | (4)
Net increase (decrease) in cash, cash equivalents, and restricted cash |  | (25) | (256)
Cash, cash equivalents, and restricted cash, beginning of year |  | 20 | 276
Cash, cash equivalents, and restricted cash, end of year |  | (5) | 20
Subsidiary Issuer | Reportable Legal Entities |  |  |
Operating activities |  |  |
Net cash provided by (used in) operating activities |  | 33 | 35
Investing activities |  |  |
Additions to property, plant and equipment |  | 0 | 0
Net purchase of investments subject to significant influence, inclusive of acquisition costs |  | 0 | 0
Proceeds on disposal of assets |  | 0 |
Other investing activities |  | 595 | 0
Net cash provided by (used in) investing activities |  | 595 | 0
Financing activities |  |  |
Change in short-term debt, net |  | 0 | 0
Proceeds from long-term debt, net of issuance costs |  | 0 | 0
Retirement of long-term debt |  | (664) | 0
Net borrowings (repayments) under committed credit facilities |  | 0 | 0
Issuance of common and preferred stock |  | 0 | 0
Dividends paid |  | 0 | 0
Other financing activities |  | 0 | 0
Net cash provided by financing activities |  | (664) | 0
Effect of exchange rate changes on cash, cash equivalents, and restricted cash |  | (3) | 2
Net increase (decrease) in cash, cash equivalents, and restricted cash |  | (39) | 37
Cash, cash equivalents, and restricted cash, beginning of year |  | 58 | 21
Cash, cash equivalents, and restricted cash, end of year |  | 19 | 58
Guarantor Subsidiaries | Reportable Legal Entities |  |  |
Operating activities |  |  |
Net cash provided by (used in) operating activities |  | 1,100 | 1,266
Investing activities |  |  |
Additions to property, plant and equipment |  | (1,973) | (1,687)
Net purchase of investments subject to significant influence, inclusive of acquisition costs |  | (3) | (16)
Proceeds on disposal of assets |  | 818 |
Other investing activities |  | 774 | 3
Net cash provided by (used in) investing activities |  | (384) | (1,700)
Financing activities |  |  |
Change in short-term debt, net |  | (9) | (162)
Proceeds from long-term debt, net of issuance costs |  | (6) | 1,174
Retirement of long-term debt |  | (65) | (716)
Net borrowings (repayments) under committed credit facilities |  | (11) | (103)
Issuance of common and preferred stock |  | (620) | 319
Dividends paid |  | (19) | (37)
Other financing activities |  | 138 | 0
Net cash provided by financing activities |  | (592) | 475
Effect of exchange rate changes on cash, cash equivalents, and restricted cash |  | (141) | 9
Net increase (decrease) in cash, cash equivalents, and restricted cash |  | (17) | 50
Cash, cash equivalents, and restricted cash, beginning of year |  | 104 | 54
Cash, cash equivalents, and restricted cash, end of year |  | 87 | 104
Non-guarantor Subsidiaries | Reportable Legal Entities |  |  |
Operating activities |  |  |
Net cash provided by (used in) operating activities |  | 279 | 465
Investing activities |  |  |
Additions to property, plant and equipment |  | (520) | (466)
Net purchase of investments subject to significant influence, inclusive of acquisition costs |  | 0 | (33)
Proceeds on disposal of assets |  | 57 |
Other investing activities |  | (1) | (65)
Net cash provided by (used in) investing activities |  | (464) | (564)
Financing activities |  |  |
Change in short-term debt, net |  | 23 | 0
Proceeds from long-term debt, net of issuance costs |  | 552 | 75
Retirement of long-term debt |  | (166) | (41)
Net borrowings (repayments) under committed credit facilities |  | (225) | 178
Issuance of common and preferred stock |  | 58 | 127
Dividends paid |  | (138) | (311)
Other financing activities |  | 87 | 91
Net cash provided by financing activities |  | 191 | 119
Effect of exchange rate changes on cash, cash equivalents, and restricted cash |  | (23) | 18
Net increase (decrease) in cash, cash equivalents, and restricted cash |  | (17) | 38
Cash, cash equivalents, and restricted cash, beginning of year |  | 190 | 152
Cash, cash equivalents, and restricted cash, end of year |  | $ 173 | $ 190

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