Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Oct. 31, 2014	Jan. 31, 2014
Property, plant and equipment, accumulated depreciation and amortization	$ 311	$ 341
Preferred Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common stock, par value per share	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	74,000,000	80,000,000
Common stock, shares outstanding	74,000,000	80,000,000
Leidos, Inc.
Property, plant and equipment, accumulated depreciation and amortization	$ 311	$ 341
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	10,000	10,000
Common stock, shares issued	5,000	5,000
Common stock, shares outstanding	5,000	5,000