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v3.19.1

RELATED PARTY TRANSACTIONS (Details) $ in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 CAD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 CAD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 CAD ($)
RELATED PARTY TRANSACTIONS |  |  |  |  |
Amounts charged to the Company for transportation services | $ 572 |  | $ 721 |  | $ 644
Purchase of natural gas by wholly owned subsidiaries | 322 |  | 142 |  | 98
Sale of natural gas by wholly owned subsidiaries | 122 |  | 60 |  | 49
Revenue from contract with customer | 21,150 |  |  |  |
Affiliate loan receivable | $ 0 |  | 0 |  |
Minimum |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Annual interest rate on the loans (as a percent) | 4.00% | 4.00% |  |  |
Maximum |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Annual interest rate on the loans (as a percent) | 8.00% | 8.00% |  |  |
Cost Recoveries |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Revenue from related parties | $ 104 | $ 80 | 88 | $ 68 |
Vector Pipeline joint venture |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Revenue from related parties | 7 |  | 14 |  | $ 7
Spectra Energy Corp | Reimbursed Maintenance Expenses |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Revenue from related parties | 28 | 22 | 10 | 8 |
Other affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Affiliate loan receivable | 769 |  | 275 |  |
Natural Gas, Midstream | DCP Midstream, LLC |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Revenue from contract with customer | 52 | 40 | 47 | 36 |
Natural Gas, Storage | DCP Midstream, LLC |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |
Revenue from contract with customer | $ 14 | $ 11 | $ 4 | $ 3 |

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