Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2021

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 March 31, 2021:

									Long-term				Demand
	Purchased				Capital		Fuel and		Service		Operating		Side
(millions)	Power		Transportation		Projects		Gas Supply		Agreements		Leases		Management		Total
2021	$	35	$	175	$	300	$	197	$	10	$	2	$	3	$	722
2022		0		233		75		42		12		3		3		368
2023		0		212		57		1		15		3		0		288
2024		0		207		0		0		15		3		0		225
2025		0		188		0		0		16		2		0		206
Thereafter		0		1,998		0		0		54		48		0		2,100
Total future minimum payments	$	35	$	3,013	$	432	$	240	$	122	$	61	$	6	$	3,909