Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Tax Expense (Benefit) [Abstract]

Analysis of the Provision for Income Taxes

	Year Ended December 31
	2011			2010			2009
	(Millions of dollars)
Current income taxes:
United States	$	43		$	368		$	313
State	32			95			(5		)
Other countries	311			337			297
Total	386			800			605
Deferred income taxes:
United States	254			(15		)	99
State	29			(24		)	(5		)
Other countries	(9		)	27			47
Total	274			(12		)	141
Total provision for income taxes	$	660		$	788		$	746

Income before Income Taxes

	Year Ended December 31
	2011		2010		2009
	(Millions of dollars)
United States	$	1,317	$	1,609	$	1,643
Other countries	866		941		933
Total income before income taxes	$	2,183	$	2,550	$	2,576

Deferred Income Tax assets (Liabilities)

	December 31
	2011			2010
	(Millions of dollars)
Net current deferred income tax asset attributable to:
Accrued expenses	$	109		$	103
Pension, postretirement and other employee benefits	87			82
Other	(9		)	2
Net current deferred income tax asset included in other current assets	$	187		$	187
Net current deferred income tax liability included in accrued expenses	$	(26	)	$	(28	)
Net noncurrent deferred income tax asset attributable to:
Tax credits and loss carryforwards	$	414		$	447
Pension and other postretirement benefits	69			153
Other	10			(55		)
Valuation allowances	(195		)	(233		)
Net noncurrent deferred income tax asset included in other assets	$	298		$	312
Net noncurrent deferred income tax liability attributable to:
Property, plant and equipment, net	$	(1,176	)	$	(1,081	)
Pension, postretirement and other employee benefits	514			550
Tax credits and loss carryforwards	343			447
Installment sales	(118		)	(112		)
Other	(46		)	(173		)
Net noncurrent deferred income tax liability included in other liabilities	$	(483	)	$	(369	)

Reconciliation of Income Tax Provision

	Year Ended December 31
	2011		2010		2009
Tax at U.S. statutory rate applied to income before income taxes	35.0	%	35.0	%	35.0	%
State income taxes, net of federal tax benefit	1.8		1.8		(0.3	)
Statutory rates other than U.S. statutory rate	(2.3	)	(3.0	)	(2.4	)
Other - net(a)	(4.3	)	(2.9	)	(3.3	)
Effective income tax rate	30.2	%	30.9	%	29.0	%

Unrecognized Income Tax Benefits

	2011			2010			2009
	(Millions of dollars)
Balance at January 1	$	568		$	570		$	438
Gross increases for tax positions of prior years	17			67			139
Gross decreases for tax positions of prior years	(60		)	(89		)	(77		)
Gross increases for tax positions of the current year	55			54			113
Settlements	(15		)	(36		)	(39		)
Lapse of statute of limitations	(4		)	—			(10		)
Currency	(3		)	2			6
Balance at December 31	$	558		$	568		$	570

Summary of Income Tax Examinations [Table Text Block]

Jurisdiction	Years
United States	2008 to 2011
United Kingdom	2009 to 2011
Canada	2007 to 2011
South Korea	2006 to 2011
Australia	2008 to 2011