CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	[1]
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 102	$ 83
Other comprehensive income
Change in fair value of cash flow hedges (Note 13)	7	1
Comprehensive income	109	84
Comprehensive income attributable to non-controlling interests	6	6
Comprehensive income attributable to controlling interests	$ 103	$ 78

[1] Recast to consolidate PNGTS (Refer to Note 2).