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BORROWINGS (Tables)

6 Months Ended

Jun. 30, 2018

Financial Instruments [Abstract]

Disclosure of detailed information about borrowings



	As of
US$ MILLIONS	June 30, 2018				December 31, 2017
Current	$	226			$	364
Non-current	9,463				7,699
Total	$	9,689			$	8,063



	Maturity		Annual Rate		Currency		As of
	Maturity		Annual Rate		Currency		June 30, 2018				December 31, 2017
Corporate revolving credit facility	June 30, 2023		LIBOR plus 1.2%		US$		$	—			$	789
Medium-term notes⁽¹⁾:
Current:
Public - Canadian	October 30, 2018		3.0%		C$		95				99
Non-current:
Public - Canadian	October 30, 2020		3.5%		C$		285				298
Public - Canadian	March 11, 2022		3.5%		C$		343				358
Public - Canadian	February 22, 2024		3.3%		C$		228				239
Public - Canadian	February 22, 2024		3.3%		C$		305				318
Total							$	1,256			$	2,101


1.	See Note 12 Subsidiary Public Issuers for further details.