Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2013

Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan

Net pension cost for the Schlumberger pension plans included the following components:

	(Stated in millions)
	Third Quarter																Nine Months
	2013								2012								2013									2012
	US				Int’l				US				Int’l					US				Int’l					US				Int’l
Service cost — benefits earned during period	$	19		$		28		$		17		$		21		$			60		$		95		$			51		$		63
Interest cost on projected benefit obligation		38				65				38				62					113				189					114				178
Expected return on plan assets		(47	)			(88	)			(46	)			(82	)				(150	)			(288	)				(139	)			(242	)
Amortization of prior service cost		3				29				3				30					9				88					9				90
Amortization of net loss		28				42				26				22					91				116					72				52
	$	41		$		76		$		38		$		53		$			123		$		200		$			107		$		141

The net periodic benefit cost for the Schlumberger US postretirement medical plan included the following components:

	(Stated in millions)
	ThirdQuarter							Nine Months
	2013			2012			2013				2012
Service cost — benefits earned during period	$	12		$	7		$		36		$	21
Interest cost on accumulated postretirement benefit obligation		14			14				42			44
Expected return on plan assets		(9	)		(8	)			(28	)		(22	)
Amortization of prior service cost		(1	)		(2	)			(3	)		(6	)
Amortization of net loss		2			3				17			13
	$	18		$	14		$		64		$	50