Pension and Other Postretirement Benefit Plans

3 Months Ended

Mar. 31, 2015

Compensation And Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

14.   Pension and Other Postretirement Benefit Plans

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

(Stated in millions)
	First Quarter
	2015						2014
	US			Int’l			US			Int’l
Service cost — benefits earned during period	$	22		$	49		$	19		$	31
Interest cost on projected benefit obligation		41			74			41			72
Expected return on plan assets		(56	)		(128	)		(52	)		(113	)
Amortization of prior service cost		5			30			3			30
Amortization of net loss		31			38			20			20
	$	43		$	63		$	31		$	40

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

(Stated in millions)
	First Quarter
	2015			2014
Service cost — benefits earned during period	$	11		$	11
Interest cost on accumulated postretirement benefit obligation		13			15
Expected return on plan assets		(13	)		(11	)
Amortization of prior service credit		(8	)		(1	)
Amortization of net loss		5			1
	$	8		$	15