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Other long-term liabilities (Tables)
 12 Months Ended
Dec. 31, 2021
Other Liabilities Disclosure [Abstract]  
Other Long-Term Liabilities
(in millions of Canadian dollars)20212020
Operating lease liabilities, net of current portion (Note 21)
$224 $248 
Stock-based compensation liabilities, net of current portion125 146 
Provision for environmental remediation, net of current portion(1)
68 71 
Deferred revenue, net of current portion (Note 3)
47 34 
Deferred real estate lease and license revenue, net of current portion(2)
10 18 
Deferred gains on sale leaseback transactions(2)
4 5 
Other, net of current portion64 63 
Total other long-term liabilities$542 $585 
(1) As at December 31, 2021, the aggregate provision for environmental remediation, including the current portion was $79 million (2020 – $80 million).
(2) The deferred real estate lease and license revenue and deferred gains on sale leaseback transactions are being amortized to income on a straight-line basis over the related lease terms.