Statements of Consolidated Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
COMPREHENSIVE INCOME
Net Earnings	$ 888us-gaap_ProfitLoss	$ 454us-gaap_ProfitLoss	$ 770us-gaap_ProfitLoss
Pension and other postretirement benefit liability adjustments, net of tax benefit (expense)	(97)	85	(62)
Total comprehensive income	791	539	708
Less: Noncontrolling interest in comprehensive income	45	42	27
COMPREHENSIVE INCOME ATTRIBUTABLE TO TESORO CORPORATION	$ 746us-gaap_ComprehensiveIncomeNetOfTax	$ 497us-gaap_ComprehensiveIncomeNetOfTax	$ 681us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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