ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

12 Months Ended

Dec. 31, 2020

Partners' Capital, Comprehensive Income [Abstract]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The changes in AOCI by component are as follows:

(millions of dollars)	Cash flow hedges	Equity Investments	Total
Balance at December 31, 2017	4	1	5
Change in fair value of cash flow hedges	(2)	—	(2)
Amounts reclassified from AOCI	5	—	5
PNGTS’ amortization of realized loss on derivative instrument (Note 19)	1	—	1
Other comprehensive income - effects of Iroquois’ retirement benefit plans	—	(1)	(1)
Net other comprehensive income	4	(1)	3
Balance at December 31, 2018	8	—	8
Change in fair value of cash flow hedges	(13)	—	(13)
Amounts reclassified from AOCI	(1)	—	(1)
Other comprehensive loss - effects of Iroquois’ retirement benefit plans	—	1	1
Net other comprehensive income (loss)	(14)	1	(13)
Balance as of December 31, 2019	(6)	1	(5)
Change in fair value of cash flow hedges	(16)	—	(16)
Amounts reclassified from AOCI	7	—	7
Other comprehensive income - effects of Iroquois’ retirement benefit plans	—	1	1
Net other comprehensive income (loss)	(9)	1	(8)
Balance as of December 31, 2020	(15)	2	(13)