Partners' Capital and Distributions (Tables)

12 Months Ended

Dec. 31, 2021

The following table presents the activity for our preferred and common units:


	Limited Partners
	Series A Preferred Units	Series B Preferred Units	Common Units
Outstanding at December 31, 2018	71,090,468	800,000	726,361,924




Issuances of common units under equity-indexed compensation plans	—	—	1,666,652
Outstanding at December 31, 2019	71,090,468	800,000	728,028,576
Repurchase and cancellation of common units under the Common Equity Repurchase Program	—	—	(6,222,748)
Issuances of common units under equity-indexed compensation plans	—	—	574,588
Outstanding at December 31, 2020	71,090,468	800,000	722,380,416
Repurchase and cancellation of common units under the Common Equity Repurchase Program	—	—	(18,061,583)
Issuances of common units under equity-indexed compensation plans	—	—	672,707
Outstanding at December 31, 2021	71,090,468	800,000	704,991,540

The following table details distributions paid to our preferred unitholders during the years presented (in millions, except unit data):


	Cash Distributions


Year	Series A Preferred Unitholders		Series B Preferred Unitholders
2021	$	149		$	49
2020	$	149		$	49
2019	$	149		$	49

The following table details distributions paid to our preferred unitholders during the years presented (in millions, except unit data):


	Cash Distributions


Year	Series A Preferred Unitholders		Series B Preferred Unitholders
2021	$	149		$	49
2020	$	149		$	49
2019	$	149		$	49

The following table details distributions paid to common unitholders during the years presented (in millions, except per unit data):


	Distributions Paid						Distributions per common unit
Year	Public		AAP		Total
2021	$	341	$	176	$	517	$	0.72
2020	$	432	$	223	$	655	$	0.90
2019	$	632	$	372	$	1,004	$	1.38