Discontinued Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Jun. 30, 2012 Wilson Distribution Segment [Member]	Sep. 30, 2012 CE Franklin Ltd. [Member]
Subsequent Event [Line Items]
Proceed from sale of business		$ 906	$ 122
Percentage of Schlumberger completed the sale of interest in CE Franklin Ltd. to NOV	56.00%