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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2017
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
17.
SUPPLEMENTAL CASH FLOW INFORMATION

In order to determine net cash provided by operating activities, net income is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
 
Year Ended December 31,
 
2017
 
2016
 
2015
Decrease (increase) in current assets:
 
 
 
 
 
Receivables, net
$
(870
)
 
$
(1,531
)
 
$
1,294

Inventories
(516
)
 
771

 
(222
)
Prepaid expenses and other
151

 
47

 
(149
)
Increase (decrease) in current liabilities:
 
 
 
 
 
Accounts payable
1,842

 
1,556

 
(1,787
)
Accrued expenses
21

 
117

 
(40
)
Taxes other than income taxes payable
172

 
82

 
(74
)
Income taxes payable
489

 
(66
)
 
(328
)
Changes in current assets and current liabilities
$
1,289

 
$
976

 
$
(1,306
)


Cash flows related to interest and income taxes were as follows (in millions):
 
Year Ended December 31,
 
2017
 
2016
 
2015
Interest paid in excess of amount capitalized
$
457

 
$
427

 
$
416

Income taxes paid, net
410

 
444

 
2,093



Cash flows reflected as “other financing activities, net” for the year ended December 31, 2016 included the payment of a long-term liability of $137 million owed to a joint venture partner associated with an owner-method joint venture investment.

Noncash investing and financing activities for the year ended December 31, 2017 included the recognition of (i) a capital lease asset and related obligation associated with an agreement for storage tanks near three of our refineries as described in Note 8 and (ii) terminal assets and related obligation recorded under owner accounting as described in Note 9.

There were no significant noncash investing and financing activities for the year ended December 31, 2016.

Noncash investing and financing activities for the year ended December 31, 2015 included the recognition of a capital lease asset and related obligation associated with an agreement for storage tanks near one of our refineries.