Leases (Tables)

9 Months Ended

Sep. 30, 2020

Leases [Abstract]

Schedule of Leasing Assets and Liabilities [Table Text Block]

	Location in Condensed Consolidated Balance Sheet	As of
		September 30, 2020		December 31, 2019
		(millions)
Assets
Operating lease assets	Operating lease assets	$	83	$	107
Finance lease assets	Property, plant and equipment	25		25
Total right of use assets		108		132
Liabilities
Current liabilities
Operating lease liabilities	Other current liabilities	$	24	$	24
Finance lease liabilities	Current debt	4		3
Noncurrent liabilities
Operating lease liabilities	Operating lease liabilities	$	76	$	88
Finance lease liabilities	Long-term debt	23		22
Total lease liabilities		$	127	$	137

Lease, Cost [Table Text Block]

	Location in Condensed Consolidated Statement of Operations	Three Months Ended September 30,				Nine Months Ended September 30,
		2020		2019		2020		2019
		(millions)
Operating lease cost	Operating and maintenance expense	$	7	$	6	$	21	$	17
Finance lease cost
Amortization of right of use assets	Depreciation and amortization expense	1		—		2		—
Interest on lease liabilities	Interest expense	1		—		1		—
Variable lease cost	Operating and maintenance expense	2		2		5		5
Short term lease cost	Operating and maintenance expense	1		2		3		4
Total lease cost		$	12	$	10	$	32	$	26

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

	Future Minimum Lease Payments as of September 30, 2020
	Operating Leases		Finance Leases
	(millions)
2020 - remainder	$	7	$	1
2021	26		5
2022	22		5
2023	18		5
2024	11		6
Thereafter	30		11
Total lease payments	$	114	$	33
Less imputed interest	(14)		(6)
Total lease liabilities	$	100	$	27

Leases - Other Information

	Nine Months Ended September 30,
	2020			2019
	(millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	20		$	18
Operating cash flows from finance leases	3			—
Financing cash flows from finance leases	1			—
Right-of-use assets obtained in exchange for operating lease obligations:	$	6		$	33
Right-of-use assets obtained in exchange for finance lease obligations:	$	5		$	5
Other information related to operating leases as follows:
Weighted average remaining lease term	6 years			5 years
Weighted average discount rate	4.00		%	4.00		%
Other information related to finance leases as follows:
Weighted average remaining lease term	5 years			5 years
Weighted average discount rate	3.00		%	4.00		%