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Supplemental Cash Flow Information
 6 Months Ended
Jun. 30, 2018
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information

Note 17.  Supplemental Cash Flow Information

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

 
 
For the Six Months
Ended June 30,
 
 
 
2018
  
2017
 
Decrease (increase) in:
      
Accounts receivable – trade
 
$
18.6
  
$
602.7
 
Accounts receivable – related parties
  
(0.2
)
  
(1.9
)
Inventories
  
17.6
   
234.3
 
Prepaid and other current assets
  
(82.4
)
  
213.7
 
Other assets
  
(11.9
)
  
(64.2
)
Increase (decrease) in:
        
Accounts payable – trade
  
112.1
   
46.6
 
Accounts payable – related parties
  
(3.1
)
  
(8.4
)
Accrued product payables
  
30.7
   
(694.2
)
Accrued interest
  
14.0
   
(0.8
)
Other current liabilities
  
(306.4
)
  
(252.4
)
Other liabilities
  
(17.5
)
  
6.7
 
Net effect of changes in operating accounts
 
$
(228.5
)
 
$
82.1
 

We incurred liabilities for construction in progress that had not been paid at June 30, 2018 and December 31, 2017 of $359.0 million and $373.0 million, respectively.  Such amounts are not included under the caption “Capital expenditures” on the Unaudited Condensed Statements of Consolidated Cash Flows.

Capital expenditures for the six months ended June 30, 2017 reflect the receipt of $29.6 million of CIACs from third parties.