Issuances of Additional Beneficial Certificate Units Level 1 (Notes)

12 Months Ended

Dec. 31, 2016

Issuances Of Additional Beneficial Unit Certificates [Abstract]

Issuances of Additional Beneficial Unit Certificates

22. Issuances of Additional Beneficial Unit Certificates

In November 2016, a Registration Statement on Form S-3 was declared effective by the SEC under which the Partnership may offer up to $225.0 million of additional BUCs from time to time. The Registration Statement will expire in November 2019.