Units Outstanding (Tables)

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

Changes in Limited Partnership Units Outstanding

Changes in limited partnership units outstanding during the nine-month period ended September 30, 2015 were as follows:

Outstanding as of December 31, 2014	273,040,452
Options exercised	526,201
Units issued	246,949
Units retired	(3,783,562	)
Balance as of September 30, 2015	270,030,040