Earnings Per Share

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Earnings Per Share

3. Earnings Per Share

The following is a reconciliation from basic earnings per share of Schlumberger to diluted earnings per share of Schlumberger:

							(Stated in millions, except per share amounts)
	2013						2012
	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations		Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations
Second Quarter
Basic	$	2,219		1,327	$	1.67	$	1,328		1,331	$	1.00
Assumed exercise of stock options		—		5				—		5
Unvested restricted stock		—		4				—		3
Diluted	$	2,219		1,336	$	1.66	$	1,328		1,339	$	0.99
	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations		Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations
Six Months
Basic	$	3,423		1,329	$	2.58	$	2,556		1,333	$	1.92
Assumed exercise of stock options		—		6				—		5
Unvested restricted stock		—		4				—		3
Diluted	$	3,423		1,339	$	2.56	$	2,556		1,341	$	1.91

The number of outstanding options to purchase shares of Schlumberger common stock which were not included in the computation of diluted earnings per share, because to do so would have had an antidilutive effect, was as follows:

	(Stated in millions)
	2013		2012
Second Quarter		13		28
Six Months		13		21