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FINANCIAL RISK MANAGEMENT - Sensitivity Analysis For Foreign Currency Risk (Details) - Foreign currency risk - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
AUD      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) $ 9 $ 4 $ 4
Impact of 10% increase on net income (loss) (9) (4) (4)
Impact of 10% decrease on partnership capital 32 70  
Impact of 10% increase on partnership capital (32) (70)  
EUR      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 1 2 0
Impact of 10% increase on net income (loss) (1) (2) 0
Impact of 10% decrease on partnership capital 0 14  
Impact of 10% increase on partnership capital 0 (14)  
GBP      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 11 5 7
Impact of 10% increase on net income (loss) (11) (5) (7)
Impact of 10% decrease on partnership capital 27 105  
Impact of 10% increase on partnership capital (27) (105)  
CLP      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) (1) (1) 0
Impact of 10% increase on net income (loss) 1 1 0
Impact of 10% decrease on partnership capital 0 (5)  
Impact of 10% increase on partnership capital 0 5  
COP      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 1 1 1
Impact of 10% increase on net income (loss) (1) (1) (1)
Impact of 10% decrease on partnership capital 6 8  
Impact of 10% increase on partnership capital (6) (8)  
BRL      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 18 15 18
Impact of 10% increase on net income (loss) (18) (15) (18)
Impact of 10% decrease on partnership capital 154 158  
Impact of 10% increase on partnership capital (154) (158)  
CAD      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 13 4 1
Impact of 10% increase on net income (loss) (13) (4) (1)
Impact of 10% decrease on partnership capital 69 1  
Impact of 10% increase on partnership capital (69) (1)  
PEN      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on partnership capital 10 10  
Impact of 10% increase on partnership capital (10) (10)  
INR      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 0 (3) (2)
Impact of 10% increase on net income (loss) 0 3 2
Impact of 10% decrease on partnership capital 49 58  
Impact of 10% increase on partnership capital (49) (58)  
NZD & Other      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Impact of 10% decrease on net income (loss) 0 (1) 0
Impact of 10% increase on net income (loss) $ 0 $ 1 $ 0