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Property, plant and equipment (Tables)
 12 Months Ended
Jun. 30, 2022
Text block [abstract]  
Summary of Property, Plant and Equipment
 
    
Land and
buildings
    
Plant and
equipment
    
Other
mineral
assets
    
Assets under
construction
    
Exploration
and
evaluation
    
Total
  
    
US$M
    
US$M
    
US$M
    
US$M
    
US$M
    
US$M
  
Net book value – 30 June 2022
                                                 
At the beginning of the financial year
   
 
8,072
 
  
 
44,682
 
  
 
8,941
 
  
 
10,432
 
  
 
1,686
 
  
 
73,813
 
Additions
1
   
 
41
 
  
 
1,935
 
  
 
792
 
  
 
5,872
 
  
 
137
 
  
 
8,777
 
Remeasurements of index-linked freight contracts
2
   
 
–
 
  
 
(369
)
  
 
–
 
  
 
–
 
  
 
–
 
  
 
(369
)
Depreciation for the year
   
 
(663
)
  
 
(5,564
)
  
 
(276
)
  
 
–
 
  
 
–
 
  
 
(6,503
)
Impairments for the year
3
   
 
(14
)
  
 
(499
)
  
 
(2
)
  
 
–
 
  
 
–
 
  
 
(515
)
Disposals
   
 
(3
)
  
 
(22
)
  
 
–
 
  
 
–
 
  
 
–
 
  
 
(25
)
Divestment and demerger of subsidiaries and operations
4
   
 
(448
)
  
 
(8,007
)
  
 
(545
)
  
 
(3,549
)
  
 
(842
)
  
 
(13,391
)
Transfers and other movements
   
 
1,094
 
  
 
3,344
 
  
 
(416
)
  
 
(3,724
)
  
 
(790
)
  
 
(492
)
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
At the end of the financial year
5
   
 
8,079
 
  
 
35,500
 
  
 
8,494
 
  
 
9,031
 
  
 
191
 
  
 
61,295
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
– Cost
   
 
14,823
 
  
 
81,218
 
  
 
14,353
 
  
 
9,755
 
  
 
981
 
  
 
121,130
 
– Accumulated depreciation and impairments
   
 
(6,744
)
  
 
(45,718
)
  
 
(5,859
)
  
 
(724
)
  
 
(790
)
  
 
(59,835
)
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Net book value – 30 June 2021
                                                 
At the beginning of the financial year
      8,387       39,429       8,652       13,774       2,120       72,362  
Additions
1
      25       3,841       797       5,961       93       10,717  
Acquisition of subsidiaries & operations
6
      –       151       491       –       –       642  
Remeasurements of index-linked freight contracts
2
      –       (59 )      –       –       –       (59 ) 
Depreciation for the year
      (694 )      (5,748 )      (310 )      –       –       (6,752 ) 
Impairments for the year
3
      (208 )      (877 )      (687 )      (745 )      (66 )      (2,583 ) 
Disposals
      (18 )      (9 )      –       –       –       (27 ) 
Divestment and demerger of subsidiaries and operations
      –      
(14
)

     –      
(2
)

     –      
(16
)
Transfers and other movements
      580       7,968       (2 )      (8,556 )      (461 )      (471 ) 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
At the end of the financial year
5
      8,072       44,682       8,941       10,432       1,686       73,813  
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
– Cost
      14,545       108,049       15,059       11,177       2,531       151,361  
– Accumulated depreciation and impairments
      (6,473 )      (63,367 )      (6,118 )      (745 )      (845 )      (77,548 ) 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
 
1
Includes change in estimates and net foreign exchange gains/(losses) related to the closure and rehabilitation provisions for operating sites. Refer to note 15 ‘Closure and rehabilitation provisions’.
 
2
 
Relates to remeasurements of index-linked freight contracts including continuous voyage charters (CVCs). Refer to note 21 ‘Leases’.
 
3
Refer to note 13 ‘Impairment of non-current assets’ for information on impairments.
 
4
BMC and Petroleum were disposed in May 2022 and June 2022 respectively. Refer to notes 3 ‘Exceptional items’ and 27 ‘Discontinued operations’ for more information.
 
5
 
Includes the carrying value of the Group’s right-of-use assets relating to land and buildings and plant and equipment of US$2,361 million (2021: US$3,350 million). Refer to note 21 ‘Leases’ for the movement of the right-of-use assets.
 
6
Relates to the acquisition of an additional 28 per cent working interest in Shenzi.
Summary of Principal Depreciation Methods and Rates Applied to Major Asset Categories The table below summarises the principal depreciation methods and rates applied to major asset categories by the Group.
 
  
Category
   
Buildings
   
Plant and
equipment
   
Mineral rights and
petroleum interests
   
Capitalised exploration,
evaluation and
development
expenditure
  
 
   
Typical depreciation methodology
    SL    SL    UoP    UoP    
             
   
Depreciation rate
   
25-50
years		   
3-30
years		    Based on the rate of depletion of reserves    Based on the rate of depletion of reserves