DEBT AND CREDIT FACILITIES (Tables)

6 Months Ended

Jun. 30, 2017

DEBT AND CREDIT FACILITIES

Schedule of debt and credit facilities

(unaudited) (millions of dollars)	June 30, 2017	Weighted Average Interest Rate for the Six Months Ended June 30, 2017		December 31, 2016 (a)	Weighted Average Interest Rate for the Year Ended December 31, 2016 (b)
TC PipeLines, LP
Senior Credit Facility due 2021	170	2.22	%	160	1.72	%
2013 Term Loan Facility due July 2018	500	2.15	%	500	1.73	%
2015 Term Loan Facility due September 2018	170	2.04	%	170	1.63	%
4.65% Unsecured Senior Notes due 2021	350	4.65	%(b)	350	4.65	%(b)
4.375% Unsecured Senior Notes due 2025	350	4.375	%(b)	350	4.375	%(b)
3.90 % Unsecured Senior Notes due 2027	500	3.90	%(b)	—	—
GTN
5.29% Unsecured Senior Notes due 2020	100	5.29	%(b)	100	5.29	%(b)
5.69% Unsecured Senior Notes due 2035	150	5.69	%(b)	150	5.69	%(b)
Unsecured Term Loan Facility due 2019	55	1.84	%	65	1.43	%
PNGTS
5.90% Senior Secured Notes due December 2018	36	5.90	%(b)	53	5.90	%(b)
Tuscarora
Unsecured Term Loan due 2019	9	2.03	%	10	1.64	%
3.82% Series D Senior Notes due 2017	12	3.82	%(b)	12	3.82	%(b)
	2,402			1,920
Less: unamortized debt issuance costs and debt discount	12			9
Less: current portion	57			52
	2,333			1,859

(a) Recast as discussed in Notes 2 and 6.

(b) Fixed interest rate

Schedule of principal repayments required on debt

(unaudited)
(millions of dollars)
2017	24
2018	715
2019	43
2020	100
2021	520
Thereafter	1,000
	2,402