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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

The following summarizes cash paid (received) for interest and income taxes, as well as non-cash investing and financing activities for the years ended December 31:
millions
2014
 
2013
 
2012
Cash paid (received)
 
 
 
 
 
Interest, net of amounts capitalized
$
689

 
$
627

 
$
684

Income taxes, net of refunds
956

 
169

 
(300
)
Non-cash investing activities
 
 
 
 
 
Fair value of properties and equipment from non-cash transactions
$
18

 
$
62

 
$
65

Asset retirement cost additions
348

 
297

 
142

Accruals of property, plant, and equipment
1,156

 
1,446

 
1,205

Net liabilities assumed or divested in acquisitions and divestitures
(92
)
 
(80
)
 
(34
)
Non-cash investing and financing activities
 
 
 
 
 
Capital lease obligation
$
13

 
$
8

 
$
—

Floating production, storage, and offloading vessel construction
  period obligation
149

 
17

 
—