SUPPLEMENTAL CASH FLOW INFORMATION

6 Months Ended

Jun. 30, 2021

Cash Flow Statement [Abstract]

Supplemental Cash Flow Information

SUPPLEMENTAL CASH FLOW INFORMATION

	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

Amounts paid and received for interest were reflected as operating cash flows in the Consolidated Statements of Cash Flows. Interest paid is net of debt related hedges.

Amounts paid for income taxes were reflected as either operating cash flows or investing cash flows in the Consolidated Statements of Cash Flows depending upon the nature of the underlying transaction.

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)