Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2016

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow Information [Text Block]

Supplemental Cash Flow Information

	Three Months Ended March 31,
(In millions)	2016			2015
Net cash (used in) operating activities:
Interest paid (net of amounts capitalized)	$	(87	)	$	(55	)
Income taxes paid to taxing authorities	(15		)	(47		)
Noncash investing activities:
Asset retirement cost increase	$	2		$	21
Asset retirement obligations assumed by buyer	54			—