Pension and Other Postretirement Benefit Plans

9 Months Ended

Sep. 30, 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)
	Third Quarter												Nine Months
	2015						2014						2015						2014
	US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost	$	22		$	30		$	19		$	38		$	65		$	128		$	54		$	98
Interest cost		42			75			47			90			127			224			123			218
Expected return on plan assets		(57	)		(125	)		(60	)		(143	)		(172	)		(381	)		(156	)		(343	)
Amortization of prior service cost		3			30			3			38			9			91			9			90
Amortization of net loss		30			54			17			18			92			128			61			70
	$	40		$	64		$	26		$	41		$	121		$	190		$	91		$	133

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

(Stated in millions)
	Third Quarter						Nine Months
	2015			2014			2015			2014
Service cost	$	11		$	10		$	32		$	32
Interest cost		12			15			36			45
Expected return on plan assets		(13	)		(12	)		(39	)		(33	)
Amortization of prior service credit		(8	)		(1	)		(24	)		(3	)
Amortization of net loss (gain)		3			(3	)		10			1
	$	5		$	9		$	15		$	42