SUPPLEMENTAL CASH FLOW INFORMATION

12 Months Ended

Dec. 31, 2021

Cash Flow Statement [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

SUPPLEMENTAL CASH FLOW INFORMATION

	Year ended December 31
(US$ MILLIONS)	2021		2020		2019
Interest paid	$	1,223	$	1,135	$	1,079
Income taxes paid	$	448	$	428	$	190

    Amounts paid and received for interest were reflected as operating cash flows in the consolidated statements of cash flow.

    Total cash outflows across the partnership’s lease contracts were $362 million (2020: $330 million).

    Details of “Changes in non-cash working capital, net” on the consolidated statements of cash flow are as follows:

	Year ended December 31
(US$ MILLIONS)	2021		2020		2019
Accounts receivable	$	(684)	$	546	$	(70)
Inventory	(494)		453		78
Prepayments and other	9		53		(11)
Accounts payable and other	27		284		119
Changes in non-cash working capital, net	$	(1,142)	$	1,336	$	116

    The following table presents the change in the balance of liabilities arising from financing activities as at December 31, 2021:

(US$ MILLIONS)	2021		2020
Balance at beginning of year	$	23,776	$	22,399
Cash flows	6,736		(102)
Non-cash changes:
Acquisitions / (dispositions) of subsidiaries	(1,341)		739
Foreign currency translation	(397)		210
Fair value	(31)		(49)
Other changes	333		579
Balance at end of year	$	29,076	$	23,776