XML 161 R131.htm IDEA: XBRL DOCUMENT v3.21.2
Commitments and Contingencies - Future Payments for Commitments (Details) - CAD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2021
Jan. 01, 2021
Dec. 31, 2020
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage $ 29,386    
Real Estate 928    
Obligation to Fund Equity-Accounted Affiliate 650    
Other Long-Term Commitments 2,379    
Total Payments $ 33,343    
Arrangement      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage   $ 7,400  
Total Payments   17,600  
WRB, Sunrise and Toledo      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Ownership interest 50.00%    
Commitments approved and not yet in service      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage $ 8,100   $ 14,000
Commitments approved and not yet in service | Arrangement      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage   $ 1,700  
Bottom of range      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Lease terms 20 years    
Remainder of Year      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage $ 911    
Real Estate 11    
Obligation to Fund Equity-Accounted Affiliate 13    
Other Long-Term Commitments 335    
Total Payments 1,270    
2 Years      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage 2,815    
Real Estate 46    
Obligation to Fund Equity-Accounted Affiliate 68    
Other Long-Term Commitments 219    
Total Payments 3,148    
3 Years      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage 3,077    
Real Estate 45    
Obligation to Fund Equity-Accounted Affiliate 86    
Other Long-Term Commitments 191    
Total Payments 3,399    
4 Years      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage 2,892    
Real Estate 54    
Obligation to Fund Equity-Accounted Affiliate 91    
Other Long-Term Commitments 144    
Total Payments 3,181    
5 Years      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage 2,085    
Real Estate 57    
Obligation to Fund Equity-Accounted Affiliate 91    
Other Long-Term Commitments 151    
Total Payments 2,384    
Thereafter      
Disclosure Of Commitments And Contingent Liabilities [Line Items]      
Transportation and Storage 17,606    
Real Estate 715    
Obligation to Fund Equity-Accounted Affiliate 301    
Other Long-Term Commitments 1,339    
Total Payments $ 19,961