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PROPERTY PLANT AND EQUIPMENT (Tables)
 6 Months Ended
Jun. 30, 2020
Property, plant and equipment [abstract]  
Disclosure of detailed information about property, plant and equipment
(US$ MILLIONS)
 
June 30, 2020
 
December 31, 2019
Gross Carrying Amount
 
 
 
 
Beginning Balance
 
$
16,502

 
$
8,415

Additions (1)
 
997

 
1,529

Dispositions
 
(161
)
 
(772
)
Acquisitions through business combinations (2)
 
12

 
6,577

Assets reclassified as held for sale (3)
 
(24
)
 
(332
)
Changes in accounting policy
 
—

 
978

Foreign currency translation
 
(376
)
 
107

Ending Balance
 
$
16,950

 
$
16,502

Accumulated Depreciation and Impairment
 
 
 
 
Beginning Balance
 
$
(2,610
)
 
$
(1,468
)
Depreciation/depletion/impairment expense (4)
 
(846
)
 
(1,407
)
Dispositions
 
72

 
263

Assets reclassified as held for sale (3)
 
9

 
62

Foreign currency translation
 
75

 
(60
)
Ending Balance
 
$
(3,300
)
 
$
(2,610
)
Net Book Value (5)
 
$
13,650

 
$
13,892

____________________________________
(1) 
Includes assets acquired in a common control transaction. See Note 17 for additional information.
(2) 
See Note 3 for additional information.
(3) 
Includes assets that were reclassified as held for sale and subsequently disposed.
(4) 
Includes an impairment expense of $137 million resulting from a write-down of certain vessels within Altera due to changes in underlying assumptions such as the impact of contract modifications, changes in lay-up cost estimates, expected values on the sale of vessels, revenue forecasts, and vessel re-contracting.
(5) 
Includes right-of-use assets of $1,291 million as at June 30, 2020