XML 82 R7.htm IDEA: XBRL DOCUMENT v2.4.1.9
Consolidated Statements Of Stockholders' Equity (Parenthetical) (USD $)
In Millions, except Per Share data, unless otherwise specified
 12 Months Ended
Jan. 30, 2015
Jan. 31, 2014
Jan. 31, 2013
Cash dividend per share $ 1.28us-gaap_CommonStockDividendsPerShareDeclared $ 1.60us-gaap_CommonStockDividendsPerShareDeclared $ 1.92us-gaap_CommonStockDividendsPerShareDeclared
Special cash dividend $ 4ldos_SpecialDividend    
SAIC      
Stock based compensation from discontinued operations   $ 21us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= ldos_SAICMember		  
Disposals of FY 2013      
Stock based compensation from discontinued operations     $ 31us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= ldos_DisposalsofTwentyThirteenMember