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ACCOUNTS PAYABLE AND OTHER (Tables)
12 Months Ended
Dec. 31, 2021
Subclassifications of assets, liabilities and equities [abstract]  
Disclosure of accounts payable and other
US$ MILLIONSNote20212020
Current:   
Accounts payable $1,877 $1,461 
Accrued liabilities 1,103 751 
Deferred revenue(i)338 256 
Lease liabilities416 206 
Provisions(1)
 161 176 
Loans and notes payable 134 
Other liabilities124 293 
Total current $4,019 $3,277 
Non-current:   
Lease liabilities$3,423 $3,597 
Deferred revenue(i)366 467 
Accrued liabilities200 — 
Provisions(1)
 492 423 
Pension liabilities(2)
 172 315 
Loans and notes payable28 84 
Other liabilities 346 311 
Total non-current $5,027 $5,197 
(1)Provisions primarily relate to decommissioning and site restoration liabilities at our Western Canadian natural gas gathering and processing operation and our Indian telecom tower operation.
(2)See Note 32, Retirement Benefit Plans, for further details.