RELATED PARTY TRANSACTIONS (Tables)

12 Months Ended

Dec. 31, 2019

RELATED PARTY TRANSACTIONS

Summary of capital and operating costs charged to pipeline systems by related party

Year ended December 31 (millions of dollars)	2019	2018	2017
Capital and operating costs charged by TC Energy’s subsidiaries to:
Great Lakes (a)	47	44	36
Northern Border(a)	39	36	43
PNGTS (a)	7	9	9
GTN	45	34	34
Bison	2	6	6
North Baja	5	4	4
Tuscarora	4	4	4
Impact on the Partnership’s net income attributable to controlling interests:
Great Lakes	20	19	15
Northern Border	18	16	16
PNGTS	4	5	5
GTN	33	28	29
Bison	2	6	6
North Baja	4	4	4
Tuscarora	4	4	4

Summary of amount payable to related party for costs charged

December 31 (millions of dollars)	2019	2018
Amount payable to TC Energy’s subsidiaries for costs charged in the year by:
Great Lakes (a)	5	3
Northern Border(a)	4	3
PNGTS (a)	1	1
GTN	5	4
Bison	—	1
North Baja	1	—
Tuscarora	—	1

(a) Represents 100 percent of the costs.