COMMITMENTS AND CONTINGENCIES (Commitments) (Tables)

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Long-term Commitments

In addition to those reported in its 2017 Annual Report on Form 10-K/A, TEP entered into the following long-term commitments through September 30, 2018:

(in millions)	2018		2019		2020		2021		2022		Thereafter		Total
Fuel, Including Transportation	$	4	$	5	$	5	$	5	$	5	$	1	$	25