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Supplemental Cash Flow Information
 9 Months Ended
Sep. 30, 2012
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information
Note 15.  Supplemental Cash Flow Information

The following table presents the net effect of changes in our operating accounts for the periods indicated:

 
 
For the Nine Months
 
 
 
Ended September 30,
 
 
 
2012
 
 
2011
 
Decrease (increase) in:
 
 
 
 
Accounts receivable – trade
 
$
121.7
 
 
$
(218.3
)
Accounts receivable – related parties
 
 
27.5
 
 
 
(1.0
)
Inventories
 
 
(229.2
)
 
 
(21.1
)
Prepaid and other current assets
 
 
(11.3
)
 
 
(35.0
)
Other assets
 
 
(54.3
)
 
 
(48.6
)
Increase (decrease) in:
 
 
 
 
 
 
 
 
Accounts payable – trade
 
 
36.2
 
 
 
114.1
 
Accounts payable – related parties
 
 
(98.9
)
 
 
79.0
 
Accrued product payables
 
 
(609.4
)
 
 
285.6
 
Accrued interest
 
 
(100.0
)
 
 
(68.7
)
Other current liabilities
 
 
26.9
 
 
 
(40.1
)
Other liabilities
 
 
(19.4
)
 
 
15.7
 
Net effect of changes in operating accounts
 
$
(910.2
)
 
$
61.6
 
 
We incurred liabilities for construction in progress that had not been paid at September 30, 2012 and December 31, 2011 of $240.6 million and $286.9 million, respectively.  Such amounts are not included under the caption "Capital expenditures" on the Unaudited Condensed Statements of Consolidated Cash Flows.

On certain of our capital projects, third parties are obligated to reimburse us for all or a portion of project expenditures.  The majority of such arrangements are associated with projects related to pipeline construction activities and production well tie-ins.  These cash receipts are presented as "Contributions in aid of construction costs" within the investing activities section of our Unaudited Condensed Statements of Consolidated Cash Flows.

Proceeds from asset sales increased $696.9 million period-to-period primarily due to the liquidation of our investment in Energy Transfer Equity during 2012 (see Note 7).  The following table summarizes our cash proceeds from asset sales for the periods indicated:

 
 
For the Nine Months
Ended September 30,
 
 
 
2012
 
 
2011
 
Proceeds from sales of Energy Transfer Equity common units (see Note 7)
 
$
1,095.3
 
 
$
333.5
 
Proceeds from other asset sales
 
 
42.1
 
 
 
107.0
 
Total proceeds from asset sales
 
$
1,137.4
 
 
$
440.5
 

See Note 16 for information regarding the collection of $30.0 million of nonrefundable property damage insurance proceeds during the nine months ended September 30, 2012.

See Note 10 for information regarding cash amounts attributable to noncontrolling interests.