Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Net income	$ 164	$ 525	$ 59
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	0	(1)	8
Deferred taxes	0	1	(4)
Foreign currency translation adjustments, net of tax	0	0	4
Reclassification of realized loss on settled derivative instruments to net income	0	0	1
Deferred taxes	0	0	(1)
Reclassification of realized loss on settled derivative instruments to net income, net of tax	0	0	0
Pension liability adjustments	(6)	14	(13)
Deferred taxes	2	(5)	5
Pension liability adjustments, net of tax	(4)	9	(8)
Total other comprehensive (loss) income, net of tax	(4)	9	(4)
Comprehensive income	160	534	55
Leidos, Inc.
Net income	166	526	56
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	0	(1)	8
Deferred taxes	0	1	(4)
Foreign currency translation adjustments, net of tax	0	0	4
Reclassification of realized loss on settled derivative instruments to net income	0	0	1
Deferred taxes	0	0	(1)
Reclassification of realized loss on settled derivative instruments to net income, net of tax	0	0	0
Pension liability adjustments	(6)	14	(13)
Deferred taxes	2	(5)	5
Pension liability adjustments, net of tax	(4)	9	(8)
Total other comprehensive (loss) income, net of tax	(4)	9	(4)
Comprehensive income	$ 162	$ 535	$ 52