Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2013

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

			Additions
	Beginning Balance		Charged (Credited) To Costs and Expenses			Other		Deductions			Ending Balance
	(Millions)
2013
Allowance for doubtful accounts — accounts and notes receivable (1)	$	—	$	—		$	—	$	—		$	—
Deferred tax asset valuation allowance (1)	144		37			—		—			181
2012
Allowance for doubtful accounts — accounts and notes receivable (1)	1		—			—		1		(3)	—
Deferred tax asset valuation allowance (1)	145		(1		)	—		—			144
2011
Allowance for doubtful accounts — accounts and notes receivable (2)	15		1			—		15		(4)	1
Deferred tax asset valuation allowance (5)	249		(33		)	—		71		(4)	145

_______________________

(1)    Deducted from related assets.

(2)    Deducted from related assets, primarily included in assets of discontinued operations.

(3)    Represents balances written off, reclassifications, and recoveries.

(4)    Includes balance deductions due to the spin-off of our exploration and production business on December 31,

2011.

(5)    Deducted primarily from related assets, with a portion included in assets of discontinued operations.