Quarterly Financial Data (unaudited) (Notes)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

QUARTERLY FINANCIAL DATA (UNAUDITED) [Text Block]

QUARTERLY FINANCIAL DATA (UNAUDITED)

	Quarters										Total Year
	First			Second		Third		Fourth
	(In millions except per share amounts)
2011
Revenues	$	6,526		$	7,963	$	8,101	$	7,713		$	30,303
Cost of sales	5,735			6,985		6,980		7,307			27,007
Operating expenses	371			372		374		378			1,495
Operating income (loss) (a)	219			419		597		(155		)	1,080
Net earnings (loss) (b)	107			222		352		(118		)	563
Net earnings (loss) attributable to Tesoro Corporation	107			218		345		(124		)	546
Net earnings (loss) per share (c):
Basic	$	0.76		$	1.54	$	2.42	$	(0.89	)	$	3.86
Diluted	$	0.74		$	1.52	$	2.39	$	(0.89	)	$	3.81
2010
Revenues	$	4,607		$	5,143	$	5,320	$	5,513		$	20,583
Cost of sales	4,247			4,492		4,647		4,865			18,251
Operating expenses	373			348		375		378			1,474
Operating income (loss) (a)	(202		)	143		129		70			140
Net earnings (loss) (b)	(155		)	67		56		3			(29		)
Net earnings (loss) per share (c):
Basic	$	(1.11	)	$	0.48	$	0.40	$	0.02		$	(0.21	)
Diluted	$	(1.11	)	$	0.47	$	0.39	$	0.02		$	(0.21	)

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(a) Includes impairment charges related to the change in scope of a capital project at our Los Angeles refinery of $48 million and $20 million, for the three months ended June 30, 2011 and March 31, 2010, respectively. Also includes a $48 million gain for the three months ended June 30, 2010, from the elimination of postretirement life insurance benefits for current and future retirees.

(b) Includes $37 million and $67 million in insurance recoveries related to the April 2, 2010 incident at our Washington refinery for the three months ended June 30, 2011 and December 31, 2010, respectively.

(c) The sum of four quarters may not equal annual results due to rounding or quarterly number of shares outstanding.