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INCOME TAXES
3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES

The effective income tax rates for the three months ended March 31, 2019 and 2018 were 22.4% and (16.7)%, respectively. The period-over-period increase in the effective income tax rate is due to the effects of rate-regulated accounting for income taxes and other permanent items relative to the increase in earnings for the three months ended March 31, 2019. Also contributing to the period-over-period increase in the effective income tax rate was the buy-in of our United States sponsored vehicles which results in Enbridge being taxed on all of our United States sponsored vehicle earnings rather than on just our proportionate share.