Multiclient Seismic Data (Tables)

3 Months Ended

Mar. 31, 2012

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data Table

	(Stated in millions)
Balance at December 31, 2011	$	425
Capitalized in period		101
Charged to expense		(72	)
Balance at March 31, 2012	$	454