The following table presents the ownership interest, voting interest, and carrying values of the partnership’s equity accounted investments as at December 31, 2021 and 2020:


(US$ MILLIONS, except as noted)	Economic interest		Voting interest		Carrying value
	2021	2020	2021	2020	2021		2020
Business services	14% - 70%	14% - 90%	14% - 57%	14% - 90%	$	23	$	60
Infrastructure services	17% - 50%	17% - 50%	17% - 50%	17% - 50%	670		796
Industrials	9% - 54%	24% - 54%	24% - 50%	24% - 50%	787		834
Total					$	1,480	$	1,690

The following table represents the change in the balance of equity accounted investments:


(US$ MILLIONS)	2021		2020
Balance at beginning of year	$	1,690	$	1,273

Acquisitions through business combinations (1)	20		(5)
Additions (2)	430		446
Dispositions (3)	(534)		(30)
Impairment	(29)		—
Share of net income	13		57
Share of other comprehensive income (loss)	(16)		6
Distributions received	(89)		(41)

Foreign currency translation	(5)		(16)
Balance at end of period	$	1,480	$	1,690

(2)Includes an equity accounted investment in the partnership’s graphite electrode operations recorded upon deconsolidation of the investment on March 1, 2021. Refer to Note 8 for additional information.

(3)During the second quarter of 2021, the advanced energy storage operations of the partnership made a partial disposal of an equity accounted investment. The retained interest is accounted for as a marketable security as at December 31, 2021.

For the year ended December 31, 2021, the partnership received total distributions from equity accounted investments of $89 million (2020: $41 million).

The following tables present the gross assets and liabilities of the partnership’s equity accounted investments:


	Year ended December 31, 2021
	Total
(US$ MILLIONS)	Current assets		Non-current assets		Total assets		Current liabilities		Non-current liabilities		Total liabilities		Total net assets
Business services	$	380	$	1,377	$	1,757	$	417	$	1,656	$	2,073	$	(316)
Infrastructure services	1,545		7,749		9,294		873		5,571		6,444		2,850
Industrials	1,421		1,169		2,590		640		330		970		1,620
Total	$	3,346	$	10,295	$	13,641	$	1,930	$	7,557	$	9,487	$	4,154


	Year Ended December 31, 2020
	Total
(US$ MILLIONS)	Current assets		Non-current assets		Total assets		Current liabilities		Non-current liabilities		Total liabilities		Total net assets
Business services	$	448	$	1,243	$	1,691	$	481	$	1,116	$	1,597	$	94
Infrastructure services	1,605		8,030		9,635		830		5,569		6,399		3,236
Industrials	1,096		736		1,832		505		222		727		1,105
Total	$	3,149	$	10,009	$	13,158	$	1,816	$	6,907	$	8,723	$	4,435

Certain of the partnership’s equity accounted investments are subject to restrictions over the extent to which they can remit funds to the partnership in the form of cash dividends, or repayments of loans and advances as a result of borrowing arrangements, regulatory restrictions and other contractual requirements.

The following tables present the gross amounts of revenues, net income and other comprehensive income from the partnership’s equity accounted investments for the years ended December 31, 2021, 2020 and 2019:


	Year Ended December 31, 2021
	Total
(US$ MILLIONS)	Revenues		Net income		OCI		Total comprehensive income
Business services	$	315	$	51	$	(6)	$	45
Infrastructure services	4,900		(294)		(99)		(393)
Industrials	3,082		424		(4)		420
Total	$	8,297	$	181	$	(109)	$	72


	Year ended December 31, 2020
	Total
(US$ MILLIONS)	Revenues		Net income		OCI		Total comprehensive income
Business services	$	252	$	(18)	$	8	$	(10)
Infrastructure services	4,080		(123)		31		(92)
Industrials	2,713		133		—		133
Total	$	7,045	$	(8)	$	39	$	31


	Year ended December 31, 2019
	Total
(US$ MILLIONS)	Revenues		Net income		OCI		Total comprehensive income
Business services	$	537	$	117	$	9	$	126
Infrastructure services	388		119		—		119
Industrials	1,770		121		—		121
Total	$	2,695	$	357	$	9	$	366

Certain of the partnership’s equity accounted investments are publicly listed entities with active pricing in a liquid market. The fair value based on the publicly listed price of these equity accounted investments in comparison to the partnership’s carrying value is as follows:


	December 31, 2021				December 31, 2020
(US$ MILLIONS)	Public price		Carrying value		Public price		Carrying value
Business services	$	43	$	—	$	39	$	—
Industrials	265		304		519		373
Total	$	308	$	304	$	558	$	373