Income Taxes (Tables)

3 Months Ended

Mar. 31, 2016

Income Taxes [Abstract]

Net Operating Loss Carryforwards and Tax Credit Carryforwards

Table 92: Net Operating Loss Carryforwards and Tax Credit Carryforwards
		March 31			December 31
In millions		2016			2015
Net Operating Loss Carryforwards:
	Federal		$	858	$	878
	State		$	2,249	$	2,272
Tax Credit Carryforwards:
	Federal		$	59	$	64
	State		$	3	$	3