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SUBSEQUENTEVENTS (Details 2) - Subsequent event - Expected - Portland Natural Gas Transmission System - TransCanada - Transaction between entities under common control
$ in Millions
Nov. 05, 2015
USD ($)
Acquisition  
Interest acquired (as a percent) 49.90%
Purchase price $ 223
Assumption of proportional debt 35
Additional contingent payment, minimum 5
Additional contingent payment, maximum $ 50
Period following closing date during which additional payments may be required 15 years