Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

The following table shows the future lease payments under operating and finance leases for continuing operations together with the present value of the net lease payments as of December 31, 2020 for 2021 through 2025 and thereafter (in millions):

	Maturity of Lease Liabilities
	Finance Leases		Operating Leases
2021	$	5	$	29
2022	5		29
2023	5		28
2024	4		27
2025	4		25
Thereafter	134		507
Total	157		645
Less: Imputed interest	(76)		(335)
Present value of lease payments	$	81	$	310

Schedule of Lease Assets and Liabilities - Lessee [Table Text Block]

The following table summarizes the amounts recognized on the Consolidated Balance Sheets related to lease asset and liability balances as of the periods indicated (in millions):

	Consolidated Balance Sheet Classification	December 31, 2020		December 31, 2019
Assets
Right-of-use assets — finance leases	Electric generation, distribution assets and other	$	74	$	67
Right-of-use assets — operating leases	Other noncurrent assets	275		248
Total right-of-use assets		$	349	$	315
Liabilities
Finance lease liabilities (current)	Non-recourse debt (current liabilities)	$	4	$	3
Finance lease liabilities (noncurrent)	Non-recourse debt (noncurrent liabilities)	77		67
Total finance lease liabilities		81		70
Operating lease liabilities (current)	Accrued and other liabilities	17		16
Operating lease liabilities (noncurrent)	Other noncurrent liabilities	293		261
Total operating lease liabilities		310		277
Total lease liabilities		$	391	$	347

Weighted-Average Lease Term and Discount Rate [Table Text Block]

The following table summarizes supplemental balance sheet information related to leases as of the periods indicated:

Lease Term and Discount Rate	December 31, 2020		December 31, 2019
Weighted-average remaining lease term — finance leases	31 years		32 years
Weighted-average remaining lease term — operating leases	23 years		23 years
Weighted-average discount rate — finance leases	4.11	%	4.99	%
Weighted-average discount rate — operating leases	6.81	%	6.99	%

Lease, Cost [Table Text Block]

The following table summarizes the components of lease expense recognized in Cost of Sales on the Consolidated Statements of Operations for the years ended (in millions):

	Twelve Months Ended December 31,
Components of Lease Cost	2020		2019
Operating lease cost	$	36	$	46
Finance lease cost:
Amortization of right-of-use assets	3		2
Interest on lease liabilities	4		2
Short-term lease costs	13		38
Variable lease cost	—		1
Total lease cost	$	56	$	89

Sales-type Lease, Lease Income [Table Text Block]

The following table shows the future lease receipts as of December 31, 2020 for 2021 through 2025 and thereafter (in millions):

	Future Cash Receipts for
	Sales-Type Leases		Operating Leases
2021	$	2	$	489
2022	2		475
2023	3		411
2024	3		412
2025	3		412
Thereafter	39		1,034
Total	52		$	3,233
Less: Imputed interest	(24)
Present value of total lease receipts	$	28