Segments and Related Information - Significant Customers - Narrative (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2021
Revenue Benchmark \| Enbridge, Inc. \| Customer Concentration Risk
Segments and Related Information [Line Items]
Concentration risk, percentage of total	12.00%	18.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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