Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenue	$ 45,266		$ 41,731		$ 36,579
Income before taxes	8,691		6,959
Assets	67,100		61,547
Depreciation and amortization	3,666	[1]	3,500	[1]	3,274	[1]
Capital Expenditures	3,943		4,694		4,004
Operating Segments
Segment Reporting Information [Line Items]
Revenue	45,266		41,731		36,579
Income before taxes	9,344		8,117
Assets	31,863		31,191
Depreciation and amortization	3,458		3,302
Capital Expenditures	3,943		4,694
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	12,246		11,159		9,740
Income before taxes	3,647		3,069
Assets	8,807		8,558
Depreciation and amortization	1,332		1,311
Capital Expenditures	1,275		1,235
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	17,317		15,892	[2]	13,775
Income before taxes	3,309		2,789	[2]
Assets	11,069		10,989	[2]
Depreciation and amortization	1,088		1,086	[2]
Capital Expenditures	1,291		1,668	[2]
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	15,927		14,802	[2]	13,030
Income before taxes	2,619		2,327	[2]
Assets	10,033		9,579	[2]
Depreciation and amortization	821		724	[2]
Capital Expenditures	1,204		1,439	[2]
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	(224)		(122)	[3]	34
Income before taxes	(231)		(68)	[3]
Assets	1,954		2,065	[3]
Depreciation and amortization	217		181	[3]
Capital Expenditures	173		352	[3]
Goodwill and intangible assets
Segment Reporting Information [Line Items]
Assets	19,415		19,387	[4]
Other Assets
Segment Reporting Information [Line Items]
Assets	3,772		2,702
Corporate
Segment Reporting Information [Line Items]
Income before taxes	(726)	[2]	(696)	[5]
Assets	12,050	[2]	8,021	[5]
Depreciation and amortization	208	[2]	198	[5]
Interest income
Segment Reporting Information [Line Items]
Income before taxes	22	[3]	30
Interest expense
Segment Reporting Information [Line Items]
Income before taxes	(369)	[4]	(331)
Charges & credits
Segment Reporting Information [Line Items]
Income before taxes	420	[5]	(161)
Discontinued Operations
Segment Reporting Information [Line Items]
Assets			$ 246

[1] Includes multiclient seismic data costs.

[2] Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.

[3] Interest income excludes amounts which are included in the segments’ income (2013: $11 million; 2012: $- million; 2011: $3 million).

[4] Interest expense excludes amounts which are included in the segments’ income (2013: $23 million; 2012: $8 million; 2011: $8 million).

[5] See Note 3 – Charges and Credits.