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CAPITAL MANAGEMENT (Tables)
 6 Months Ended
Jun. 30, 2020
Disclosure of Capital Management [Abstract]  
Schedule of invested capital
We define Invested Capital as partnership capital removing the impact of the following items: non-controlling interest in operating subsidiaries, retained earnings or deficit, accumulated other comprehensive income and ownership changes.
 
As of
US$ MILLIONS
June 30, 2020
 
December 31, 2019
Partnership Capital
$
18,743

 
$
22,177

Remove impact of the following items since inception:
 
 
 
Non-controlling interest - in operating subsidiaries
(11,860
)
 
(14,113
)
Deficit
2,450

 
2,048

Accumulated other comprehensive income
218

 
(705
)
Ownership changes and other
(537
)
 
(398
)
Invested Capital
$
9,014

 
$
9,009

The following table presents the change in Invested Capital during the three and six-month periods ended June 30, 2020:
 
For the three-month
period ended June 30
 
For the six-month
period ended June 30
US$ MILLIONS
2020
 
2019
 
2020
 
2019
Opening balance
$
9,011

 
$
8,202

 
$
9,009

 
$
8,156

Issuance of preferred units and preferred shares, net of repurchases
—

 
—

 
—

 
72

Issuances of limited partnership units and redeemable partnership units, net of repurchases
3

 
2

 
5

 
(24
)
Ending balance
$
9,014

 
$
8,204

 
$
9,014

 
$
8,204

Weighted Average Invested Capital
$
9,011

 
$
8,202

 
$
9,010

 
$
8,192