Multiclient Seismic Data (Tables)

3 Months Ended

Jun. 30, 2011

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data Table

	(Stated in millions)
Balance at December 31, 2010	$	394
Capitalized in period		131
Charged to expense		(100	)
Balance at June 30, 2011	$	425