Appendix 2.2 Additional Information No. 715 of February 3, 2012 - Summary of Estimated Sales and Purchases of Energy and Capacity - Income Statement (Detail) - Estimated Sales and Purchases of Energy and Capacity [Member] - CLP ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Energy And Power [Member]
Disclosure Of Estimated Sales And Purchases Of Energy And Capacity [Line Items]
Energy Sales	$ 466,620,691	$ 434,442,879
Energy Purchases	151,312,313	147,662,168
Energy and Tolls [Member]
Disclosure Of Estimated Sales And Purchases Of Energy And Capacity [Line Items]
Energy Sales	11,112,332	33,270,962
Energy Purchases	$ 5,855,074	$ 11,928,862