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v3.19.3.a.u2

RELATED PARTY TRANSACTIONS (Details) $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) | Dec. 31, 2019 CAD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CAD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CAD ($)
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Amounts charged to the Company for transportation services |  | $ 812 |  | $ 572 |  | $ 721
Purchase of natural gas by wholly owned subsidiaries |  | 392 |  | 322 |  | 142
Sale of natural gas by wholly owned subsidiaries |  | 145 |  | 122 |  | 60
Total revenue from contracts with customers |  | $ 19,697 |  | 20,797 |  |
Minimum |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Annual interest rate on the loans (as a percent) | 3.00% | 3.00% |  |  |  |
Maximum |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Annual interest rate on the loans (as a percent) | 8.00% | 8.00% |  |  |  |
Vector Pipeline joint venture |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Revenue from related parties |  | $ 7 |  | 7 |  | 14
Spectra Energy Corp | Reimbursed Maintenance Expenses |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Revenue from related parties | $ 36 | 48 | $ 22 | 28 | $ 8 | 10
Other affiliates |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Amounts receivable from affiliates |  | 1,023 |  | 769 |  |
Natural Gas, Midstream | DCP Midstream, LLC |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Total revenue from contracts with customers | 26 | 34 | 40 | 52 | 36 | 47
Natural Gas, Storage | DCP Midstream, LLC |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Total revenue from contracts with customers | $ 52 | $ 69 | $ 11 | $ 14 | $ 3 | $ 4

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