Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

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Income tax rate reconciliation from statutory to effective tax rate

	Three Months Ended June 30,				Six Months Ended June 30,
In millions	2018		2017		2018		2017
Income (loss) before income taxes	$	(146)	$	(210)	$	(242)	$	(330)
Provision (benefit) for income taxes	$	-	$	1,019	$	2	$	971
Effective tax rate		0.0%		-485.2%		-0.8%		-294.2%