Provision (Benefit) for Income Taxes (Tables)

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The Provision (benefit) for income taxes includes:

	Three Months Ended   March 31,
	2019			2018
	(Millions)
Current:
Federal	$	(6	)	$	(19	)
State	—			1
	(6		)	(18		)
Deferred:
Federal	61			64
State	14			9
	75			73
Provision (benefit) for income taxes	$	69		$	55