Goodwill (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Goodwill [Abstract]

Summary of Goodwill by the Cash-Generating Unit or Group of Cash-Generating Units

The following table shows goodwill by the Cash-Generating Unit or group of Cash-Generating Units to which it belongs and changes as of December 31, 2017 and 2016:

		Opening Balance 01-01-2016		Increase/ (Decrease)			ClosingBalance 12/31/2016		Increase/ (Decrease)		Closing Balance 12/31/2017
Company	Cash Generating Unit	ThCh$		ThCh$			ThCh$		ThCh$		ThCh$
Empresa Eléctrica de Colina Ltda.	EmpresaEléctrica de Colina Ltda.		2,240,478		—			2,240,478		—		2,240,478
Compañía Eléctrica Tarapacá S.A. (1)	Enel Generación Chile		4,656,105		(4,656,105	)		—		—		—
Enel Distribución Chile S.A.	Enel Distribución Chile		128,374,362		—			128,374,362		—		128,374,362
Enel Generación Chile S.A.	Enel Generación Chile		731,782,459		—			731,782,459		—		731,782,459
GasAtacama Chile (1)	Enel Generación Chile		20,204,251		4,656,105			24,860,356		—		24,860,356
	Total		887,257,655		—			887,257,655		—		887,257,655

(1) On November 1, 2016, Compañía Eléctrica Tarapacá S.A. was merged with GasAtacama S.A., the latter being the surviving company.