Income Taxes (Tables)

3 Months Ended

Mar. 31, 2017

Income Tax Disclosure [Abstract]

Income Tax Provision (Benefit)

The income tax provision (benefit) consists of the following:

	Three Months Ended March 31,
(millions)	2017			2016
Current	$	12		$	20
Deferred	—			(186		)
Total Income Tax Provision (Benefit)	$	12		$	(166	)
Effective Tax Rate	20.3		%	36.6		%