INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Expense (Benefit), Continuing Operations [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

Domestic and Foreign Components of Income (Loss) Before Income Taxes
In millions	2013			2012			2011
Domestic (1)	$	1,077		$	(95	)	$	303
Foreign	(10		)	(2		)	(1		)
Total	$	1,067		$	(97	)	$	302

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

Provision for Income Taxes
			2013									2012									2011
In millions	Current		Deferred			Total			Current			Deferred			Total			Current			Deferred			Total
Federal	$	337	$	18		$	355		$	10		$	15		$	25		$	126		$	(41	)	$	85
State and local	5		(47		)	(42		)	(5		)	(3		)	(8		)	(2		)	(2		)	(4		)
Foreign	6		—			6			—			—			—			6			—			6
Total	$	348	$	(29	)	$	319		$	5		$	12		$	17		$	130		$	(43	)	$	87

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Reconciliation to U.S. Statutory Rate
In millions	2013			2012			2011
Taxes at U.S. statutory rate	$	374		$	(34	)	$	106
Equity earnings effect (1)	(1		)	2			—
U.S. business credits	—			—			(6		)
Benefit of dividend income from investments in related companies	(6		)	(9		)	(2		)
Audit settlement and court case impact	20			—			—
Unrecognized tax benefits	(30		)	9			(1		)
Impairment of investment in related company	1			46			—
Federal tax accrual adjustments (1)	(5		)	(8		)	—
State and local tax impact	(38		)	12			(7		)
Other - net	4			(1		)	(3		)
Total tax provision	$	319		$	17		$	87
Effective tax rate	29.9		%	(17.5		)%	28.8		%

(1) The amount for the noted reconciliation item is immaterial for 2011 and has been included in the “Other - net” category.

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Deferred Tax Balances at December 31 In millions	2013					2012
	Deferred Tax Assets			Deferred Tax Liabilities		Deferred Tax Assets			Deferred Tax Liabilities
Property	$	—		$	235	$	—		$	202
Tax loss and credit carryforwards	95			—		103			—
Postretirement benefit obligations	706			440		887			403
Other accruals and reserves	656			4		595			4
Inventory	30			—		10			1
Long-term debt	—			1		—			1
Investments	7			—		—			1
Other - net	2			1		28			46
Subtotal	$	1,496		$	681	$	1,623		$	658
Valuation allowances	(50		)	—		(124		)	—
Total	$	1,446		$	681	$	1,499		$	658

Schedule of Total Gross Unrecognized Tax Benefits [Table Text Block]

Total Gross Unrecognized Tax Benefits
In millions	2013			2012			2011
Balance at January 1	$	166		$	161		$	163
Increases related to positions taken on items from prior years	1			—			—
Decreases related to positions taken on items from prior years	(7		)	—			(1		)
Increases related to positions taken in current year	—			8			1
Settlement of uncertain tax positions with tax authorities	(154		)	—			—
Decreases due to expiration of statutes of limitations	(2		)	(3		)	(2		)
Balance at December 31	$	4		$	166		$	161

Schedule of Tax Years Subject to Examination by Major Tax Jurisdiction

Tax Years Subject to Examination by Major Tax Jurisdiction at December 31
Jurisdiction	Earliest Open Year
	2013	2012
United States:
Federal income tax	2004	2004
State and local income tax	2004	2004