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Supplemental Cash Flow Information
 3 Months Ended
Mar. 31, 2017
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 Three Months
Ended March 31,
 
 
 
2017
  
2016
 
Decrease (increase) in:
      
Accounts receivable – trade
 
$
110.1
  
$
124.6
 
Accounts receivable – related parties
  
(0.6
)
  
0.4
 
Inventories
  
(71.9
)
  
(194.3
)
Prepaid and other current assets
  
249.0
   
5.3
 
Other assets
  
(2.2
)
  
1.3
 
Increase (decrease) in:
        
Accounts payable – trade
  
6.5
   
(64.8
)
Accounts payable – related parties
  
(21.1
)
  
(46.7
)
Accrued product payables
  
(16.8
)
  
228.7
 
Accrued interest
  
(137.9
)
  
(158.2
)
Other current liabilities
  
(400.2
)
  
(84.4
)
Other liabilities
  
(3.7
)
  
1.7
 
Net effect of changes in operating accounts
 
$
(288.8
)
 
$
(186.4
)

We incurred liabilities for construction in progress that had not been paid at March 31, 2017 and December 31, 2016 of $240.9 million and $124.3 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.