XML 56 R41.htm IDEA: XBRL DOCUMENT v3.22.0.1
PROPERTY, PLANT AND EQUIPMENT (Tables)
 12 Months Ended
Dec. 31, 2021
Property, plant and equipment [abstract]  
Disclosure of detailed information about property, plant and equipment
US$ MILLIONSGross carrying amountAccumulated depreciationAccumulated fair value adjustmentsTotal
Balance at January 1, 2020$3,696 $(567)$1,368 $4,497 
Additions, net of disposals358 6 — 364 
Non-cash additions6 (3)— 3 
Depreciation expense— (131)— (131)
Fair value adjustments— — 215 215 
Net foreign currency exchange differences137 (24)50 163 
Balance at December 31, 2020$4,197 $(719)$1,633 $5,111 
Additions, net of disposals367 10 — 377 
Assets held by subsidiaries disposed during the period(1)
(599)163 (217)(653)
Non-cash disposals(1)(3)— (4)
Depreciation expense— (128)— (128)
Fair value adjustments— — 134 134 
Net foreign currency exchange differences(29)4 (9)(34)
Balance at December 31, 2021$3,935 $(673)$1,541 $4,803 
(1)See Note 4, Disposition of Businesses, for additional information.
The following table summarizes the valuation techniques and significant inputs for our company’s property, plant and equipment assets.
Dec. 31, 2021Dec. 31, 2020
Valuation
Technique		Discount
Rate		Terminal
Value
Multiple		Investment
Horizon		Valuation
Technique		Discount
Rate		Terminal
Value
Multiple		Investment
Horizon
Discounted cash flow model7% 
20x
 
10 yrs
Discounted cash flow model7% 
23x
 
10 yrs