Statement Of Comprehensive Income [Abstract]

CGG - Filing #2821675

Concept	2020-01-01 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2020-01-01 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2019-12-31 to 2020-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2019-01-01 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31	2018-12-31 to 2019-12-31
Statement of comprehensive income [abstract]
Profit (loss)	4,381,000,000 USD	USD	USD	USD	USD	4,418,000,000 USD	4,381,000,000 USD	37,000,000 USD	USD	4,418,000,000 USD	USD	USD	USD	USD	USD	USD	615,000,000 USD	615,000,000 USD	76,000,000 USD	USD	691,000,000 USD	691,000,000 USD
Other comprehensive income [abstract]
Other comprehensive income	135,000,000 USD	- USD	176,000,000 USD	- USD	- USD	68,000,000 USD	135,000,000 USD	27,000,000 USD	- USD	108,000,000 USD	- USD	- USD	- USD	2,000,000 USD	- USD	12,000,000 USD	88,000,000 USD	88,000,000 USD	7,000,000 USD	- USD	81,000,000 USD	71,000,000 USD
Comprehensive income	4,246,000,000 USD	- USD	176,000,000 USD	- USD	- USD	4,486,000,000 USD	4,246,000,000 USD	64,000,000 USD	- USD	4,310,000,000 USD	- USD	- USD	- USD	2,000,000 USD	- USD	12,000,000 USD	703,000,000 USD	703,000,000 USD	69,000,000 USD	- USD	772,000,000 USD	762,000,000 USD
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	4,310,000,000 USD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	772,000,000 USD	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	64,000,000 USD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	69,000,000 USD	—	—	—	—	—