Multiclient Seismic Data (Tables)

12 Months Ended

Dec. 31, 2020

Multiclient Seismic Data [Abstract]

Change in Carrying Amount of Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data is as follows:

(Stated in millions)
	2020			2019
Balance at beginning of year	$	568		$	601
Capitalized in period		101			231
Charged to expense		(174	)		(264	)
Impairment charge (see Note 3)		(156	)		-
Other		(22	)		-
	$	317		$	568