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Other long-term obligations
 3 Months Ended
Mar. 31, 2023
Other Liabilities Disclosure [Abstract]  
Other long-term obligations Other long-term obligations
 
As at
Mar 31
As at
 Dec 31
millions of Canadian dollars20232022
Employee retirement benefits (a)
875 902 
Asset retirement obligations and other environmental liabilities (b)
2,158 2,150 
Share-based incentive compensation liabilities
99 101 
Operating lease liability (c)
137 151 
Other obligations
140 163 
Total other long-term obligations3,409 3,467 
(a)Total recorded employee retirement benefits obligations also included $63 million in current liabilities (2022 - $63 million).
(b)Total asset retirement obligations and other environmental liabilities also included $116 million in current liabilities (2022 - $116 million).
(c)Total operating lease liability also included $100 million in current liabilities (2022 - $100 million). In addition to the total operating lease liability, additional undiscounted commitments for leases not yet commenced totalled $13 million (2022 - $14 million).