Leases (Tables)

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Schedule of Leasing Assets and Liabilities [Table Text Block]

	Location in Condensed Consolidated Balance Sheet	As of
		March 31, 2020		December 31, 2019
		(millions)
Assets
Operating lease assets	Operating lease assets	$	98	$	107
Finance lease assets	Property, plant and equipment	21		25
Total right of use assets		119		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	$	83	$	88
Finance lease liabilities	Long-term debt	21		22
Total lease liabilities		$	130	$	137

Lease, Cost [Table Text Block]

	Location in Condensed Consolidated Statement of Operations	Three Months Ended March 31,
		2020		2019
		(millions)
Operating lease cost	Operating and maintenance expense	$	8	$	6
Variable lease cost	Operating and maintenance expense	2		2
Short term lease cost	Operating and maintenance expense	1		1
Total lease cost		$	11	$	9

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

	Future Minimum Lease Payments as of March 31, 2020
	Operating Leases		Finance Leases
	(millions)
2020 - remainder	$	20	$	4
2021	25		4
2022	22		4
2023	17		4
2024	9		3
Thereafter	29		8
Total lease payments	$	122	$	27
Less imputed interest	(16)		(3)
Total lease liabilities	$	106	$	24

Leases - Other Information

	Three Months Ended March 31,
	2020			2019
	(millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	7		$	6
Operating cash flows from finance leases	1			—
Right-of-use assets obtained in exchange for operating lease obligations:	$	—		$	6
Other information related to operating leases as follows:
Weighted average remaining lease term	6 years			6 years
Weighted average discount rate	4.00		%	4.00		%
Other information related to finance leases as follows:
Weighted average remaining lease term	6 years			—
Weighted average discount rate	3.00		%	—		%