Provision (Benefit) for Income Taxes (Tables)

6 Months Ended

Jun. 30, 2013

Provision (Benefit) for Income Taxes [Abstract]

Provision (benefit) for income taxes from continuing operations

		Three months ended				Six months ended
		June 30,				June 30,
			2013		2012		2013		2012
			(Millions)				(Millions)
Current:
	Federal	$	(61)	$	33	$	(72)	$	54
	State		1		4		3		8
	Foreign		(1)		3		1		24
			(61)		40		(68)		86
Deferred:
	Federal		130		30		212		117
	State		19		(3)		32		(6)
	Foreign		14		4		22		7
			163		31		266		118
Total provision (benefit)		$	102	$	71	$	198	$	204