The following table summarizes our related party transactions for the periods presented:

	For the Three Months Ended March 31,
	2013		2012
Revenues – related parties:
Unconsolidated affiliates	$	5.9	$	30.8
Costs and expenses – related parties:
EPCO and affiliates	$	212.7	$	166.0
Unconsolidated affiliates		31.3		5.1
Total	$	244.0	$	171.1

The following table summarizes our related party accounts receivable and accounts payable balances at the dates indicated:

	March 31,		December 31,
	2013		2012
Accounts receivable - related parties:
Unconsolidated affiliates	$	2.7	$	2.5

Accounts payable - related parties:
EPCO and affiliates	$	61.9	$	102.4
Unconsolidated affiliates		31.2		24.7
Total	$	93.1	$	127.1

We have an extensive and ongoing relationship with EPCO and its privately held affiliates (including Enterprise GP, our general partner), which are not a part of our consolidated group of companies. At March 31, 2013, EPCO and its privately held affiliates (including Dan Duncan LLC and certain Duncan family trusts, the beneficiaries of which include the estate of Dan L. Duncan) beneficially owned the following limited partner interests in us:

Number of Units Beneficially Owned	Percentage of Total Units Outstanding
339,604,069 (1)	37.1%
(1) Includes 4,520,431 Class B units.

The following table presents our costs and expenses attributable to the ASA and other related party transactions with EPCO for the periods presented:

	For the Three Months Ended March 31,
	2013		2012
Operating costs and expenses	$	181.1	$	142.7
General and administrative expenses		31.6		23.3
Total costs and expenses	$	212.7	$	166.0