Leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Schedule of Leasing Assets and Liabilities [Table Text Block]

	Location in Condensed Consolidated Balance Sheet	As of
		June 30, 2020		December 31, 2019
		(millions)
Assets
Operating lease assets	Operating lease assets	$	91	$	107
Finance lease assets	Property, plant and equipment	22		25
Total right of use assets		113		132
Liabilities
Current liabilities
Operating lease liabilities	Other current liabilities	$	23	$	24
Finance lease liabilities	Current debt	3		3
Noncurrent liabilities
Operating lease liabilities	Operating lease liabilities	$	76	$	88
Finance lease liabilities	Long-term debt	21		22
Total lease liabilities		$	123	$	137

Lease, Cost [Table Text Block]

	Location in Condensed Consolidated Statement of Operations	Three Months Ended June 30,				Six Months Ended June 30,
		2020		2019		2020		2019
		(millions)
Operating lease cost	Operating and maintenance expense	$	6	$	5	$	14	$	11
Finance lease cost
Amortization of right of use assets	Depreciation and amortization expense	1		—		1		—
Variable lease cost	Operating and maintenance expense	1		1		3		3
Short term lease cost	Operating and maintenance expense	1		1		2		2
Total lease cost		$	9	$	7	$	20	$	16

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

	Future Minimum Lease Payments as of June 30, 2020
	Operating Leases		Finance Leases
	(millions)
2020 - remainder	$	13	$	2
2021	25		4
2022	21		4
2023	17		4
2024	9		4
Thereafter	29		9
Total lease payments	$	114	$	27
Less imputed interest	(15)		(3)
Total lease liabilities	$	99	$	24

Leases - Other Information

	Six Months Ended June 30,
	2020			2019
	(millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	14		$	12
Operating cash flows from finance leases	2			—
Right-of-use assets obtained in exchange for operating lease obligations:	$	—		$	6
Right-of-use assets obtained in exchange for finance lease obligations:	$	1		$	—
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			—
Weighted average discount rate	3.00		%	—		%