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PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2019
Property, plant and equipment [abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT
 
Buildings, plant and equipment1

Mining property costs subject to depreciation2,4

Mining property costs not subject to depreciation2,3

Total

At January 1, 2019
 
 
 
 
Net of accumulated depreciation

$3,600


$6,258


$2,968


$12,826

Additions5,6
298

3,458

1,371

5,127

Capitalized interest
—

—

14

14

Acquisitions8
3,473

2,270

1,660

7,403

Divestiture9
(127
)
(106
)
(27
)
(260
)
Disposals
(22
)
—

—

(22
)
Depreciation
(1,107
)
(907
)
—

(2,014
)
Impairment reversals (charges)
990

742

(309
)
1,423

Transfers7
648

573

(1,221
)
—

Assets held for sale
—

—

(356
)
(356
)
At December 31, 2019

$7,753


$12,288


$4,100


$24,141

At December 31, 2019
 
 
 
 
Cost

$18,544


$27,268


$16,050


$61,862

Accumulated depreciation and impairments
(10,791
)
(14,980
)
(11,950
)
(37,721
)
Net carrying amount – December 31, 2019

$7,753


$12,288


$4,100


$24,141

 
 
 
 
 
 
Buildings, plant and equipment1

Mining property costs subject to depreciation2,4

Mining property costs not subject to depreciation2,3

Total

At January 1, 2018
 
 
 
 
Cost

$14,209


$20,938


$14,637


$49,784

Accumulated depreciation and impairments
(9,996
)
(14,416
)
(11,566
)
(35,978
)
Net carrying amount – January 1, 2018

$4,213


$6,522


$3,071


$13,806

Additions6
(21
)
199

1,050

1,228

Capitalized interest
—

—

9

9

Disposals
(7
)
—

—

(7
)
Depreciation
(790
)
(772
)
—

(1,562
)
Impairment reversals (charges)
(394
)
(178
)
(76
)
(648
)
Transfers7
599

487

(1,086
)
—

At December 31, 2018

$3,600


$6,258


$2,968


$12,826

At December 31, 2018
 
 
 
 
Cost

$14,750


$21,624


$14,610


$50,984

Accumulated depreciation and impairments
(11,150
)
(15,366
)
(11,642
)
(38,158
)
Net carrying amount – December 31, 2018

$3,600


$6,258


$2,968


$12,826

1 
Additions include $85 million of transitional adjustments for the recognition of leased right-of-use assets upon the Company’s adoption of IFRS 16 on January 1, 2019 (refer to note 2), as well as $49 million of right-of-use assets for lease arrangements entered into during the year ended December 31, 2019. Depreciation includes depreciation for leased right-of-use assets of $25 million for the year ended December 31, 2019. The net carrying amount of leased right-of-use assets was $75 million as at December 31, 2019.
2 
Includes capitalized reserve acquisition costs, capitalized development costs and capitalized exploration and evaluation costs other than exploration license costs included in intangible assets.
3 
Assets not subject to depreciation include construction-in-progress, projects and acquired mineral resources and exploration potential at operating minesites and development projects.
4 
Assets subject to depreciation include the following items for production stage properties: acquired mineral reserves and resources, capitalized mine development costs, capitalized stripping and capitalized exploration and evaluation costs.
5 
Additions include $3,422 million of remeasurement gain related to the change in ownership of Turquoise Ridge acquired though the Nevada Joint Venture. Refer to note 4 for further details.
6 
Additions include revisions to the capitalized cost of closure and rehabilitation activities.
7 
Primarily relates to long-lived assets that are transferred between categories within PP&E once they are placed into service.
8 
Acquisitions include assets acquired as part of the Merger and the establishment of Nevada Gold Mines. Refer to note 4 for further details.
9 
Relates to the sale of our 50% interest in Kalgoorlie. Refer to note 4 for further details.
 
a)   Mineral Property Costs Not Subject to Depreciation
 
Carrying amount at Dec. 31, 2019

Carrying amount at Dec. 31, 2018

Construction-in-progress1

$1,009


$786

Acquired mineral resources and exploration potential
1,504

124

Projects
 
 
   Pascua-Lama
754

1,245

   Norte Abierto
649

639

   Donlin Gold
184

174

 

$4,100


$2,968

1 
Represents assets under construction at our operating minesites.

b)   Changes in Gold and Copper Mineral Life of Mine Plan
As part of our annual business cycle, we prepare updated estimates of proven and probable gold and copper mineral reserves and the portion of resources considered probable of economic extraction for each mineral property. This forms the basis for our LOM plans. We prospectively revise calculations of amortization expense for property, plant and equipment amortized using the UOP method, where the denominator is our LOM ounces. The effect of changes in our LOM on amortization expense for 2019 was a $49 million decrease (2018: $85 million decrease).

c)   Capital Commitments
In addition to entering into various operational commitments in the normal course of business, we had commitments of approximately $383 million at December 31, 2019 (2018: $82 million) for construction activities at our sites and projects.

d)   Other Lease Disclosure
The Company leases various buildings, plant and equipment as part of the normal course of operations. Lease terms are negotiated on an individual basis and contain a wide range of different terms and conditions. Refer to note 25 for the lease maturity analysis. Included in net income for 2019 are short-term payments and variable lease payments not included in the measurement of lease liabilities of $56 million and $97 million, respectively.