Condensed Statements of Consolidated Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net earnings	$ 455	$ 329
Adjustments to reconcile net earnings to net cash from (used in) operating activities:
Depreciation and amortization expense	212	209
Amortization of debt issuance costs and discounts	6	10
Loss on asset disposals and impairments	12	57
Stock-based compensation expense	21	35
Write-off of unamortized debt issue costs and discounts	0	13
Deferred income taxes	146	156
Excess tax benefits from stock-based compensation arrangements	(4)	(7)
Other changes in noncurrent assets and liabilities	(205)	(50)
Changes in current assets and current liabilities:
Receivables	110	(469)
Inventories	(13)	(597)
Prepayments and other	55	(75)
Accounts payable and accrued liabilities	(71)	478
Net cash from operating activities	724	89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	(243)	(112)
Proceeds from asset sales	3	1
Acquisitions	(38)	0
Net cash used in investing activities	(278)	(111)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	185	115
Repayments on revolving credit agreements	(184)	(160)
Repayments of debt	(1)	(244)
Proceeds from stock options exercised	14	7
Proceeds from issuance of common units -Tesoro Logistics LP	0	288
Distributions to noncontrolling interest	(11)	0
Purchases of common stock	(31)	(7)
Excess tax benefits from stock-based compensation arrangements	4	7
Financing costs and other	0	(25)
Net cash used in financing activities	(24)	(19)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	422	(41)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	900	648
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,322	607
SUPPLEMENTAL CASH FLOW DISCLOSURES
Interest paid, net of capitalized interest	50	62
Income taxes paid, net	1	61
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES
Capital expenditures included in accounts payable and accrued liabilities at end of period	$ 52	$ 16