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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
19.
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,
 
2014
 
2013
 
2012
Decrease (increase) in current assets:
 
 
 
 
 
Receivables, net
$
2,753

 
$
(753
)
 
$
437

Inventories
(1,014
)
 
(13
)
 
(282
)
Income taxes receivable
(23
)
 
10

 
51

Prepaid expenses and other
(32
)
 
2

 
(28
)
Increase (decrease) in current liabilities:
 
 
 
 
 
Accounts payable
(3,149
)
 
977

 
(113
)
Accrued expenses
38

 
53

 
13

Taxes other than income taxes
(64
)
 
337

 
(260
)
Income taxes payable
(319
)
 
309

 
(120
)
Changes in current assets and current liabilities
$
(1,810
)
 
$
922

 
$
(302
)


The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable balance sheets for the respective periods for the following reasons:
•
the amounts shown above exclude changes in cash and temporary cash investments, deferred income taxes, and current portion of debt and capital lease obligations, as well as the effect of certain noncash investing and financing activities discussed below;
•
the amounts shown above for the year ended December 31, 2013 exclude the change in current assets and current liabilities resulting from the separation of our retail business as described in Note 3;
•
amounts accrued for capital expenditures and deferred turnaround and catalyst costs are reflected in investing activities when such amounts are paid;
•
amounts accrued for common stock purchases in the open market that are not settled as of the balance sheet date are reflected in financing activities when the purchases are settled and paid; and
•
certain differences between balance sheet changes and the changes reflected above result from translating foreign currency denominated balances at the applicable exchange rates as of each balance sheet date.

There were no significant noncash investing activities for the years ended December 31, 2014, 2013 and 2012.

Noncash financing activities for the year ended December 31, 2013 included the exchange of CST’s senior unsecured bonds and the exchange of all of our remaining shares of CST common stock with third-party financial institutions in satisfaction of our short-term debt agreements as described in Note 11. There were no significant noncash financing activities for the years ended December 31, 2014 and 2012.
Cash flows related to interest and income taxes paid were as follows (in millions):
 
Year Ended December 31,
 
2014
 
2013
 
2012
Interest paid in excess of amount capitalized
$
392

 
$
361

 
$
302

Income taxes paid, net
1,624

 
387

 
705



Cash flows related to the discontinued operations of the Aruba Refinery were immaterial for the years ended December 31, 2014, 2013, and 2012.