SUPPLEMENTAL CASH FLOW INFORMATION SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

6 Months Ended

Jun. 30, 2021

Cash Flow Statement [Abstract]

Disclosure Of Interest And Income Taxes Paid [Table Text Block]

	For the three-month period ended June 30				For the six-month period ended June 30
US$ MILLIONS	2021		2020		2021		2020
Interest paid	$	76	$	84	$	127	$	95
Income taxes paid	$	34	$	100	$	145	$	100

Disclosure Of Changes In Non-cash Working Capital [Table Text Block]

Details of “Changes in non-cash working capital, net” on the Consolidated Statements of Cash Flows are as follows:

	For the three-month period ended June 30				For the six-month period ended June 30
US$ MILLIONS	2021		2020		2021		2020
Accounts receivable	$	(16)	$	(11)	$	(56)	$	(42)
Accounts payable and other	32		16		(5)		(14)
Changes in non-cash working capital, net	$	16	$	5	$	(61)	$	(56)