LEASES (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease, Cost

The components of lease expense were as follows (in millions):

	Year Ended December 31,
	2020		2019
Finance leases:
Amortization of assets, included in Depreciation and amortization expense	$	8	$	7
Interest on lease liabilities, included in Interest expense	4		4
Operating leases:
Amortization of assets, included in Total operating expense	7		8
Interest on lease liabilities, included in Total operating expense	2		2
Total net lease cost	$	21	$	21

Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate):

	December 31, 2020		December 31, 2019
Operating leases:
Operating lease ROU assets, included in Other assets	$	43	$	46
Current operating lease liabilities, included in Accrued expenses and other current liabilities	$	6	$	6
Noncurrent operating lease liabilities, included in Other liabilities	43		46
Total operating lease liabilities	$	49	$	52
Finance leases:
Property and equipment, at cost	$	170	$	168
Accumulated amortization	(33)		(25)
Property and equipment, net	$	137	$	143
Current obligations of finance leases, included in Current portion of project debt	$	6	$	6
Finance leases, net of current obligations, included in Project debt	72		78
Current obligations of finance leases, included in Current portion of long-term debt	1		—
Finance leases, net of current obligations, included in Long-term debt	6		6
Total finance lease liabilities	$	85	$	90

Supplemental cash flow and other information related to leases was as follows (in millions):

	Year Ended December 31,
	2020			2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows related to operating leases	$	9		$	10
Financing cash flows related to finance leases	$	7		$	6
Weighted average remaining lease term (in years):
Operating leases	11.4			11.9
Finance leases	31.1			32.3
Weighted average discount rate:
Operating leases	4.58		%	4.64		%
Finance leases	5.06		%	5.05		%

Finance Lease, Liability, Maturity

Maturities of lease liabilities were as follows (in millions):

	December 31, 2020
	Operating Leases		Finance Leases
2021	$	9	$	12
2022	8		12
2023	7		12
2024	7		11
2025	6		13
2026 and thereafter	27		92
Total lease payments	64		152
Less: Amounts representing interest	(15)		(67)
Total lease obligations	$	49	$	85

Operating Lease, Liability, Maturity

Maturities of lease liabilities were as follows (in millions):

	December 31, 2020
	Operating Leases		Finance Leases
2021	$	9	$	12
2022	8		12
2023	7		12
2024	7		11
2025	6		13
2026 and thereafter	27		92
Total lease payments	64		152
Less: Amounts representing interest	(15)		(67)
Total lease obligations	$	49	$	85