XML 59 R26.htm IDEA: XBRL DOCUMENT v2.4.0.8
Income Taxes (Tables)
3 Months Ended
Mar. 31, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The following table summarizes the difference between income tax expense (benefit) at the United States statutory rate of 35% and the income tax expense at effective worldwide tax rates for the respective periods:


Three Months Ended March 31,
Millions of dollars

2014

2013
Earnings before income taxes

$
214


$
190

Income tax expense computed at United States statutory tax rate

$
75


$
67

U.S. government tax incentives, including Energy Tax Credits



(94
)
U.S. foreign income items, net of credits
 
(12
)
 
(22
)
Foreign government tax incentive, including BEFIEX

(5
)

(11
)
Other

(8
)

(7
)
Income tax (benefit) expense computed at effective worldwide tax rates

$
50


$
(67
)