Partners' Capital and Partnership Distributions (Details) - shares	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Equity [Abstract]
Common units, issued (in shares)	86,997,590	86,997,590
Common units, outstanding (in shares)	86,997,590	86,997,590
OCI or Affiliates
Class of Stock [Line Items]
Common units of company owned by OCI and Affiliates (in shares)	69,497,590
Percentage of common units owned by OCI or Affiliates	80.00%