Intangible Assets (Including Goodwill) (Tables)

12 Months Ended

Dec. 31, 2017


(in millions of Euros)	Goodwill			Technology			Computer Software			Customer relationships			Work in Progress			Other			Total intangible assets (excluding goodwill)
Net balance at January 1, 2017		457			28			21			18			9			3			79
Additions		—			—			—			—			6			—			6
Amortization expense		—			(1	)		(9	)		(1	)		—			(1	)		(12	)
Transfer during the period		—			1			7			—			(6	)		—			2
Effects of changes in foreign exchange rates		(54	)		(4	)		(1	)		(2	)		—			—			(7	)

Net balance at December 31, 2017		403			24			18			15			9			2			68

Cost		403			81			55			38			9			3			186
Less accumulated amortization and impairment		—			(57	)		(37	)		(23	)		—			(1	)		(118	)

Net balance at December 31, 2017		403			24			18			15			9			2			68


(in millions of Euros)	Goodwill		Technology			Computer Software			Customer relationships			Work in Progress			Other		Total intangible assets (excluding goodwill)
Net balance at January 1, 2016		443		28			23			18			7			2		78
Additions		—		—			1			—			4			—		5
Amortization expense		—		(1	)		(9	)		(1	)		—			—		(11	)
Transfer during the period		—		—			2			—			(2	)		—		—
Effects of changes in foreign exchange rates		14		1			4			1			—			1		7

Net balance at December 31, 2016		457		28			21			18			9			3		79

Cost		457		91			52			43			9			3		198
Less accumulated amortization and impairment		—		(63	)		(31	)		(25	)		—			—		(119	)

Net balance at December 31, 2016		457		28			21			18			9			3		79