Commitments

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

The Company enters into long-term contracts for construction projects, maintenance and service, transmission of electricity, operations services and purchases of electricity and fuel. In general, these contracts are subject to variable quantities or prices and are terminable only in limited circumstances. The following table shows the future minimum commitments for continuing operations under these contracts as of December 31, 2019 for 2020 through 2024 and thereafter as well as actual purchases under these contracts for the years ended December 31, 2019, 2018, and 2017 (in millions):



Actual purchases during the year ended December 31,	Electricity Purchase Contracts		Fuel Purchase Contracts		Other Purchase Contracts
2017	$	747	$	1,619	$	1,945
2018	827		1,838		1,671
2019	1,597		1,824		1,684
Future commitments for the year ending December 31,
2020	$	699	$	1,385	$	1,551
2021	509		1,086		723
2022	406		756		538
2023	439		643		538
2024	459		568		529
Thereafter	5,110		2,601		1,745
Total	$	7,622	$	7,039	$	5,624