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FINANCIAL STATEMENT EFFECTS OF RATE REGULATION - GENERAL INFORMATION (Details) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Canadian Mainline |  |
GENERAL INFORMATION ON RATE REGULATION AND ITS EFFECTS |  |
Term of CLT | 10 years |
Southern Lights |  |
GENERAL INFORMATION ON RATE REGULATION AND ITS EFFECTS |  |
After-tax ROE (as a percent) | 10.00% |
Deemed debt component of capital (as a percent) | 70.00% |
Deemed equity component of capital (as a percent) | 30.00% |
Enbridge Gas Distribution |  |
GENERAL INFORMATION ON RATE REGULATION AND ITS EFFECTS |  |
After-tax ROE (as a percent) | 9.20% | 9.30%
Deemed equity component of capital (as a percent) | 36.00% | 36.00%

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- Definition Represents the deemed debt structure inherent in the toll or rate. + References No definition available. + Details
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- Definition Represents the deemed equity structure inherent in the toll or rate. + References No definition available. + Details
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- Definition General information on rate regulations and its economic effects. + References No definition available. + Details
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- Definition Represents the after-tax rate of return on equity. + References No definition available. + Details
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