Pension and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan

Net pension cost (credit) for the Schlumberger pension plans included the following components:

(Stated in millions)
	Second Quarter												Six Months
	2019						2018						2019						2018
	US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost	$	13		$	32		$	14		$	38		$	27		$	64		$	30		$	70
Interest cost		46			83			41			76			91			166			84			152
Expected return on plan assets		(57	)		(148	)		(61	)		(149	)		(115	)		(298	)		(125	)		(293	)
Amortization of prior service cost		2			2			3			3			4			4			6			5
Amortization of net loss		8			15			10			27			16			31			24			70
	$	12		$	(16	)	$	7		$	(5	)	$	23		$	(33	)	$	19		$	4

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

(Stated in millions)
	Second Quarter						Six Months
	2019			2018			2019			2018
Service cost	$	7		$	8		$	15		$	16
Interest cost		12			10			24			22
Expected return on plan assets		(17	)		(16	)		(33	)		(32	)
Amortization of prior service credit		(7	)		(7	)		(14	)		(14	)
	$	(5	)	$	(5	)	$	(8	)	$	(8	)