RELATED PARTY TRANSACTIONS (Tables)

6 Months Ended

Jun. 30, 2018

RELATED PARTY TRANSACTIONS

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

	Three months ended		Six months ended
(unaudited)	June 30,		June 30,
(millions of dollars)	2018	2017	2018	2017
Capital and operating costs charged by TransCanada’s subsidiaries to:
Great Lakes (a)	16	9	24	17
Northern Border (a)	9	10	18	20
GTN	8	9	16	16
Bison	1	1	3	2
North Baja	1	1	2	2
Tuscarora	1	1	2	2
PNGTS	2	2	4	4
Impact on the Partnership’s net income:
Great Lakes (a)	7	4	11	7
Northern Border (a)	4	4	8	7
GTN	7	7	14	14
Bison	1	1	3	2
North Baja	1	1	2	2
Tuscarora	1	1	2	2
PNGTS	1	1	2	2

Summary of amount payable to related party for costs charged

(unaudited)
(millions of dollars)	June 30, 2018	December 31, 2017
Net amounts payable to TransCanada’s subsidiaries is as follows:
Great Lakes (a) (b)	3	3
Northern Border (a)	3	4
GTN	3	3
Bison	1	1
North Baja	—	—
Tuscarora	—	—
PNGTS(a)	1	1

^(a) Represents 100 percent of the costs.

^(b) Excludes any amounts owed to affiliates relating to revenue sharing. See discussion below.