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PROPERTY, PLANT AND EQUIPMENT (Tables)
 12 Months Ended
Dec. 31, 2019
Property, plant and equipment [abstract]  
Disclosure of detailed information about property, plant and equipment
US$ MILLIONS
 
Utility
Assets
 
Transport
Assets
 
Energy
Assets
 
Data Infrastructure Assets
 
Total
Assets
Gross Carrying Amount:
 
 
 
 
 
 
 
 
 
 
Balance at January 1, 2018
 
$
3,471

 
$
2,657

 
$
2,629

 
$
—

 
$
8,757

Additions, net of disposals
 
441

 
77

 
140

 
4

 
662

Non-cash (disposals) additions
 
(19
)
 
(4
)
 
6

 
—

 
(17
)
Acquisitions through business combinations(1)
 
394

 
—

 
2,111

 
440

 
2,945

Net foreign currency exchange differences
 
(267
)
 
(245
)
 
(205
)
 
—

 
(717
)
Balance at December 31, 2018
 
$
4,020

 
$
2,485

 
$
4,681

 
$
444

 
$
11,630

Change in accounting policies(2)
 
21

 
356

 
197

 
633

 
1,207

Additions, net of disposals
 
467

 
122

 
419

 
8

 
1,016

Non-cash (disposals) additions
 
(2
)
 
49

 
(270
)
 
(51
)
 
(274
)
Acquisitions through business combinations(1)
 
—

 
5,283

 
3,332

 
95

 
8,710

Assets reclassified as held for sale
 
(458
)
 
—

 
—

 
—

 
(458
)
Net foreign currency exchange differences
 
135

 
4

 
72

 
2

 
213

Balance at December 31, 2019
 
$
4,183

 
$
8,299

 
$
8,431

 
$
1,131

 
$
22,044

Accumulated depreciation:
 
 
 
 
 
 
 
 
 
 
Balance at January 1, 2018
 
$
(510
)
 
$
(687
)
 
$
(383
)
 
$
—

 
$
(1,580
)
Depreciation expense
 
(149
)
 
(147
)
 
(134
)
 
—

 
(430
)
Disposals
 
7

 
22

 
8

 
—

 
37

Non-cash disposals
 
(2
)
 
—

 
(1
)
 
—

 
(3
)
Net foreign currency exchange differences
 
41

 
68

 
18

 
—

 
127

Balance at December 31, 2018
 
$
(613
)
 
$
(744
)
 
$
(492
)
 
$
—

 
$
(1,849
)
Depreciation expense
 
(171
)
 
(178
)
 
(328
)
 
(87
)
 
(764
)
Disposals
 
7

 
2

 
(4
)
 
—

 
5

Assets reclassified as held for sale
 
194

 
—

 
—

 
—

 
194

Non-cash disposals (additions)
 
3

 
(27
)
 
50

 
—

 
26

Net foreign currency exchange differences
 
(14
)
 
(3
)
 
(11
)
 
(1
)
 
(29
)
Balance at December 31, 2019
 
$
(594
)
 
$
(950
)
 
$
(785
)
 
$
(88
)
 
$
(2,417
)
Accumulated fair value adjustments:
 
 
 
 
 
 
 
 
 
 
Balance at January 1, 2018
 
$
1,258

 
$
873

 
$
629

 
$
—

 
$
2,760

Fair value adjustments
 
220

 
18

 
224

 
—

 
462

Net foreign currency exchange differences
 
(77
)
 
(81
)
 
(31
)
 
—

 
(189
)
Balance at December 31, 2018
 
$
1,401

 
$
810

 
$
822

 
$
—

 
$
3,033

Assets reclassified as held for sale
 
(416
)
 
—

 
—

 
—

 
(416
)
Fair value adjustments
 
347

 
45

 
327

 
—

 
719

Net foreign currency exchange differences
 
38

 
2

 
22

 
—

 
62

Non-cash disposals
 
—

 
—

 
(12
)
 
—

 
(12
)
Balance at December 31, 2019
 
$
1,370

 
$
857

 
$
1,159

 
$
—

 
$
3,386

Net book value:
 
 
 
 
 
 
 
 
 
 
December 31, 2019(3)
 
$
4,959

 
$
8,206

 
$
8,805

 
$
1,043

 
$
23,013

December 31, 2018
 
$
4,808

 
$
2,551

 
$
5,011

 
$
444

 
$
12,814

 
(1)
See Note 7 Acquisition of Businesses for additional information.
(2)
See Note 3 Significant Accounting Policies for additional information.
(3)
Includes right-of-use assets of $20 million in our utilities segment, $1,329 million in our transport segment, $252 million in our energy segment and $560 million in our data infrastructure segment.
The following table summarizes the carrying amount of property, plant and equipment that would have been recognized had assets been carried under the cost model.
US$ MILLIONS
 
Dec. 31, 2019
 
Dec. 31, 2018
Utilities
 
$
3,589

 
$
3,407

Transport
 
7,349

 
1,741

Energy
 
7,646

 
4,189

Data Infrastructure
 
1,043

 
444

The following table summarizes the valuation techniques and significant inputs for Brookfield Infrastructure’s property, plant and equipment assets valued using the income method, categorized by segment.
 
 
Dec. 31, 2019
 
Dec. 31, 2018
Segment
 
Valuation
Technique
 
Discount
Rate
 
Terminal
Value
Multiple
 
Investment
Horizon
 
Valuation
Technique
 
Discount
Rate
 
Terminal
Value
Multiple
 
Investment
Horizon
Utilities
 
Discounted cash flow model
 
7% to 14%
 
8x to 21x
 
10 to 20 yrs
 
Discounted cash flow model
 
7% to 14%
 
8x to 22x
 
10 to 20 yrs
Transport
 
Discounted cash flow model
 
9% to 14%
 
9x to 14x
 
10 to 20 yrs
 
Discounted cash flow model
 
10% to 13%
 
9x to 14x
 
10 to 20 yrs
Energy
 
Discounted cash flow model
 
12% to 15%
 
10x to 17x
 
5 to 10 yrs
 
Discounted cash flow model
 
12% to 15%
 
10x to 14x
 
10 yrs
Data Infrastructure
 
Discounted cash flow model
 
13% to 15%
 
11x to 17x
 
10 to 11 yrs
 
Discounted cash flow model
 
13% to 15%
 
10x to 11x
 
10 yrs