Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2020

Commitments And Contingencies Disclosure [Abstract]

Schedule of Long-term Commitments

The following is a schedule of future payments under PPAs, minimum lease payments with non-cancelable lease terms in excess of one year, and other net purchase obligations/commitments at September 30, 2020:

									Long-term				Demand
	Purchased				Capital		Fuel and		Service		Operating		Side
(millions)	Power		Transportation		Projects		Gas Supply		Agreements		Leases		Management		Total
2020	$	15	$	56	$	119	$	66	$	3	$	1	$	1	$	261
2021		3		234		101		58		11		3		4		414
2022		0		236		76		3		12		3		3		333
2023		0		211		68		1		16		3		0		299
2024		0		206		0		0		16		3		0		225
Thereafter		0		2,127		0		0		62		50		0		2,239
Total future minimum payments	$	18	$	3,070	$	364	$	128	$	120	$	63	$	8	$	3,771