Charges and Credits (Tables)

9 Months Ended

Sep. 30, 2011

Charges and Credits [Abstract]

Summary of Charges

			(Stated in millions)
							Consolidated Statement
	Pretax		Tax		Net		of Income Classification
Merger and integration-related costs	$	93	$	17	$	76	Merger & integration
Donation to the Schlumberger Foundation		50		10		40	General & administrative
	$	143	$	27	$	116

Schedule Of Merger Related Charges

				(Stated in millions)
										Consolidated Statement
	Pretax			Tax			Net			of Income Classification
Restructuring and Merger-related Charges:
Severance and other	$	90		$	13		$	77		Restructuring & other
Impairment relating to WesternGeco’s first generation Q-Land acquisition system		78			7			71		Restructuring & other
Other WesternGeco-related charges		63			—			63		Restructuring & other
Professional fees and other		56			1			55		Merger & integration
Merger-related employee benefits		41			6			35		Merger & integration
Inventory fair value adjustments		38			14			24		Cost of revenue
Mexico restructuring		40			4			36		Restructuring & other
Repurchase of bonds		28			10			18		Restructuring & other
Total restructuring and merger-related charges		434			55			379
Gain on investment in M-I SWACO		(1,270	)		(32	)		(1,238	)	Gain on Investment in M-I SWACO
	$	(836	)	$	23		$	(859	)

				(Stated in millions)
										Consolidated Statement
	Pretax			Tax			Net			of Income Classification
Restructuring and Merger-related Charges:
Severance and other	$	90		$	13		$	77		Restructuring & other
Impairment relating to WesternGeco’s first generation Q-Land acquisition system		78			7			71		Restructuring & other
Other WesternGeco-related charges		63			—			63		Restructuring & other
Professional fees and other		56			1			55		Merger & integration
Merger-related employee benefits		76			6			70		Merger & integration
Inventory fair value adjustments		38			14			24		Cost of revenue
Mexico restructuring		40			4			36		Restructuring & other
Repurchase of bonds		28			10			18		Restructuring & other
Total restructuring and merger-related charges		469			55			414
Impact of elimination of tax deduction related to Medicare Part D subsidy		—			(40	)		40		Taxes on income
Gain on investment in M-I SWACO		(1,270	)		(32	)		(1,238	)	Gain on Investment in M-I SWACO
	$	(801	)	$	(17	)	$	(784	)