Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Schedule of Long-term Commitments

The following is a schedule of future payments under minimum lease payments with non-cancelable lease terms in excess of one year and other net purchase obligations/commitments at December 31, 2019:

	Purchased				Capital		Fuel and Gas		Long-term Service		Operating		Demand Side
(millions)	Power		Transportation		Projects		Supply		Agreements		Leases		Management		Total
Year ended December 31:
2020	$	3	$	200	$	186	$	226	$	7	$	2	$	4	$	628
2021		3		217		84		58		6		3		3		374
2022		0		220		79		3		9		3		3		317
2023		0		197		66		1		12		3		0		279
2024		0		190		0		0		18		3		0		211
Thereafter		0		2,065		0		0		67		51		0		2,183
Total future minimum payments	$	6	$	3,089	$	415	$	288	$	119	$	65	$	10	$	3,992