Other Financial Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Total financing interest and debt costs	$ 284		$ 242		$ 288
Less: Capitalized interest	284		242		288
Interest and debt expense	0		0		0
Research and development expenses	750		648		627
Foreign currency effects	474	[1]	(454)	[1]	121	[1]
Gains on sale of nonstrategic properties	500		2,800
Company share of equity affiliates foreign currency effects	244		(202)		(27)
Excess of replacement cost over carrying value of LIFO inventories	9,150		9,292
LIFO (charges) profits	14		121		193
Goodwill	4,639		4,640
Downstream [Member]
Segment Reporting Information [Line Items]
Gains on sale of nonstrategic properties	300		600
Upstream [Member]
Segment Reporting Information [Line Items]
Gains on sale of nonstrategic properties	$ 200		$ 2,200

[1] Includes $244, $(202) and $(27) in 2013, 2012 and 2011, respectively, for the company’s share of equity affiliates’ foreign currency effects.