Depreciation, Amortization and Impairment Losses

12 Months Ended

Dec. 31, 2017

Disclosure Of Depreciation Amortization And Impairment [Abstract]

Depreciation, Amortization and Impairment Losses

28. DEPRECIATION, AMORTIZATION AND IMPAIRMENT LOSSES.

The detail of depreciation, amortization and impairment losses for the years ended December 31, 2017, 2016 and 2015, are as follows:

	For the years ended December 31,
	2017			2016			2015
	ThCh$			ThCh$			ThCh$
Depreciation		(145,873,065	)		(155,826,620	)		(148,421,514	)
Amortization		(6,811,041	)		(5,833,990	)		(4,780,148	)
Subtotal		(152,684,106	)		(161,660,610	)		(153,201,662	)
Impairment (Losses) Reversals (*)		(7,937,817	)		(35,926,710	)		3,054,903
Total		(160,621,923	)		(197,587,320	)		(150,146,759	)

	Balance as of
(*) Impairment Losses	Generation								Distribution									Total
	2017		2016			2015			2017			2016			2015			2017			2016			2015
	ThCh$		ThCh$			ThCh$			ThCh$			ThCh$			ThCh$			ThCh$			ThCh$			ThCh$
Impairment losses of financial assets (See Note 8.d)		55,494		—			(371,558	)		(7,993,311	)		(5,141,179	)		(6,738,750	)		(7,937,817	)		(5,141,179	)		(7,110,308	)
Impairment losses of property, plant and equipment    (See Note 15)		—		(30,785,531	)		10,165,211			—			—			—			—			(30,785,531	)		10,165,211
Total		55,494		(30,785,531	)		9,793,653			(7,993,311	)		(5,141,179	)		(6,738,750	)		(7,937,817	)		(35,926,710	)		3,054,903