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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2016
Commitments and Contingencies [Abstract]  
Other Commitments [Table Text Block]
millions of Canadian dollars20172018201920202021ThereafterTotal
Purchased power (1)$ 253$ 224$ 206$ 202 198$ 2,272$ 3,355
Fuel and gas supply 475 161 109 28 22 - 795
Demand Side Management 42 48 13 - - - 103
Transportation (2) 496 392 310 280 196 1,622 3,296
Long-term service agreements (3) 92 55 67 44 42 227 527
Capital projects 133 - - - - - 133
Equity investment commitments (4) 236 - - 200 - - 436
Leases and other (5) 66 17 14 12 8 70 187
$ 1,793$ 897$ 719$ 766$ 466$ 4,191$ 8,832
(1)    Annual requirement to purchase electricity production from independent power producers or other utilities over varying contract lengths.
(2)    Purchasing commitments for transportation of fuel and transportation capacity on various pipelines.
(3)   Maintenance of certain generating equipment, services related to a generation facility and wind operating agreements, outsourced management of computer and communication infrastructure and vegetation management.
(4)  Emera has a commitment in connection with the Federal Loan Guarantee ("FLG") to complete construction of the Maritime Link. Thirty per cent of the financing of this project will come from Emera as equity. Emera also has a commitment to make equity contributions to the Labrador Island Link Limited Partnership upon draw requests from the general partner. The amounts forecasted are a combination of equity investments for both projects and are subject to change in both timing and amounts as the projects advance through construction.
(5)  Operating lease agreements for office space, land, plant fixtures and equipment, telecommunications services, rail cars and vehicles.