RELATED PARTY TRANSACTIONS (Tables)

9 Months Ended

Sep. 30, 2019

RELATED PARTY TRANSACTIONS

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

	Three months ended		Nine months ended
(unaudited)	September 30,		September 30,
(millions of dollars)	2019	2018	2019	2018
Capital and operating costs charged by TC Energy’s subsidiaries to:
Great Lakes (a)	12	9	35	34
Northern Border (a)	10	8	29	26
GTN	11	8	32	25
Bison	1	2	2	5
North Baja	1	1	4	3
Tuscarora	1	1	3	3
PNGTS (a)	2	2	5	7
Impact on the Partnership’s income (b):
Great Lakes	4	4	14	14
Northern Border	4	4	13	12
GTN	9	7	25	21
Bison	—	2	1	5
North Baja	1	1	3	3
Tuscarora	1	1	3	3
PNGTS (b)	1	1	3	4

Summary of amount payable to related party for costs charged

(unaudited)
(millions of dollars)	September 30, 2019	December 31, 2018
Net amounts payable to TC Energy’s subsidiaries are as follows:
Great Lakes (a)	5	3
Northern Border (a)	4	3
GTN	4	4
Bison	—	1
North Baja	1	—
Tuscarora	—	1
PNGTS (a)	1	1

(a) Represents 100 percent of the costs.

(b) Represents the Partnership's proportionate share based ownership percentage of these pipelines