Segments and Related Information - Significant Customers - Narrative (Details)	3 Months Ended
Mar. 31, 2021
Revenue Benchmark \| Enbridge, Inc. \| Customer Concentration Risk
Segments and Related Information [Line Items]
Concentration risk, percentage of total	25.00%

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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