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Summary of Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Reconciliation of Earnings Per Share from Continuing Operations

The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

 

 

(Stated in millions except per share amounts)

 

 

 

 

 

Schlumberger
Income from
Continuing
Operations

 

  

Weighted
Average
Shares
Outstanding

 

  

Earnings
Per Share
from
Continuing
Operations

 

2014:

 

 

 

  

 

 

 

  

 

 

 

Basic

$

5,643

  

  

 

1,295

  

  

$

4.36

  

Assumed exercise of stock options

 

—  

  

  

 

9

  

  

 

 

 

Unvested restricted stock

 

—  

  

  

 

4

  

  

 

 

 

Diluted

$

5,643

  

  

 

1,308

  

  

$

4.31

  

 

 

 

 

  

 

 

 

  

 

 

 

2013:

 

 

 

  

 

 

 

  

 

 

 

Basic

$

6,801

  

  

 

1,323

  

  

$

5.14

  

Assumed exercise of stock options

 

—  

  

  

 

6

  

  

 

 

 

Unvested restricted stock

 

—  

  

  

 

4

  

  

 

 

 

Diluted

$

6,801

  

  

 

1,333

  

  

$

5.10

  

 

 

 

 

  

 

 

 

  

 

 

 

2012:

 

 

 

  

 

 

 

  

 

 

 

Basic

$

5,230

  

  

 

1,330

  

  

$

3.93

  

Assumed exercise of stock options

 

—  

  

  

 

5

  

  

 

 

 

Unvested restricted stock

 

—  

  

  

 

4

  

  

 

 

 

Diluted

$

5,230

  

  

 

1,339

  

  

$

3.91