Consolidated Statements Of Stockholders' Equity (USD $) In Millions, except Share data	Total USD ($)		Shares of Common stock	Additional paid-in capital USD ($)	Retained earnings USD ($)	Accumulated other comprehensive loss USD ($)	Leidos, Inc. USD ($)	Leidos, Inc. Shares of Common stock	Leidos, Inc. Additional paid-in capital USD ($)	Leidos, Inc. Retained earnings USD ($)	Leidos, Inc. Accumulated other comprehensive loss USD ($)
Balance, value at Jan. 31, 2011	$ 2,491			$ 2,090	$ 408	$ (7)	$ 2,009		$ 233	$ 1,783	$ (7)
Balance, shares at Jan. 31, 2011			90,000,000					5,000
Net income	59				59		56			56
Other comprehensive income (loss), net of tax	(4)					(4)	(4)				(4)
Issuances of stock, value	44			44
Issuances of stock, shares			2,000,000
Repurchases of stock, value	(478)			(175)	(303)
Repurchases of stock, shares			(7,000,000)
Adjustments for income tax benefits from stock-based compensation	(16)			(16)
Stock-based compensation	85			85
Balance, value at Jan. 31, 2012	2,181			2,028	164	(11)	2,061		233	1,839	(11)
Balance, shares at Jan. 31, 2012			85,000,000					5,000
Net income	117	[1]					117
Balance, value at Apr. 30, 2012
Balance, value at Jan. 31, 2012	2,181			2,028	164	(11)	2,061		233	1,839	(11)
Balance, shares at Jan. 31, 2012			85,000,000					5,000
Net income	525				525		526			526
Other comprehensive income (loss), net of tax	9					9	9				9
Issuances of stock, value	24			24
Issuances of stock, shares			1,000,000
Repurchases of stock, value	(22)			(10)	(12)
Cash dividend	(167)				(167)
Adjustments for income tax benefits from stock-based compensation	(16)			(16)
Stock-based compensation	84			84
Balance, value at Jan. 31, 2013	2,618			2,110	510	(2)	2,596			2,365	(2)
Balance, shares at Jan. 31, 2013			86,000,000					5,000
Balance, value at Oct. 31, 2012
Net income	186	[1]					187
Balance, value at Jan. 31, 2013	2,618						2,596
Balance, shares at Jan. 31, 2013								5,000
Net income	81	[1],[2]					81
Balance, value at May. 03, 2013
Balance, value at Jan. 31, 2013	2,618			2,110	510	(2)	2,596		233	2,365	(2)
Balance, shares at Jan. 31, 2013			86,000,000					5,000
Net income	164				164		166			166
Other comprehensive income (loss), net of tax	(4)					(4)	(4)				(4)
Issuances of stock, value	33			33
Repurchases of stock, value	(319)			(165)	(154)
Repurchases of stock, shares			(6,000,000)
Cash dividend	(139)				(139)
Special cash dividend	(356)				(356)
Adjustments for income tax benefits from stock-based compensation	(11)			(11)
Stock-based compensation	76			76
Dividend received, net of contribution paid, from the spin-off of New SAIC	269			269
Spin-off of New SAIC	(736)			(736)			(26)		(26)
Balance, value at Jan. 31, 2014	1,595			1,576	25	(6)	2,732		207	2,531	(6)
Balance, shares at Jan. 31, 2014			80,000,000					5,000
Balance, value at Nov. 01, 2013
Net income	44	[1],[2]					46
Balance, value at Jan. 31, 2014	$ 1,595						$ 2,732
Balance, shares at Jan. 31, 2014								5,000

[1] Income from continuing operations and net income relate to Leidos Holdings, Inc. only, see Leidos, Inc.'s amounts detailed below

[2] Fiscal 2014 quarterly results include increased charges related to intangible asset impairment charges (second quarter charge was $30 million and another charge in the third quarter of $19 million), bad debt expense (third quarter expense was $42 million) and separation transaction and restructuring expenses (approximately $33 million in the first and second quarters combined, $25 million in the third quarter, and $7 million in the fourth quarter). For further information see, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.