Consolidated Statements Of Cash Flows - USD ($) $ in Millions	11 Months Ended		12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 30, 2015	Jan. 31, 2014
Cash flows from operating activities of continuing operations:
Net income (loss)	$ 242	$ (334)	$ (323)	$ 164
Loss (income) from discontinued operations	1	11	(7)	(80)
Adjustments to reconcile net income (loss) to net cash provided by continuing operations:
Depreciation and amortization	41	58	62	80
Stock-based compensation	30	40	42	55
Goodwill impairment charges	0	486	486	0
Asset impairment charges	33	41	81	51
Restructuring charges	3	1	3	17
(Gain) loss on a real estate sale	(82)	0	0	2
Bad debt expense	3	3	5	44
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Receivables	(19)	68	162	(69)
Inventory, prepaid expenses and other current assets	3	6	(12)	44
Income taxes receivable/payable	55	4	(87)	54
Deferred income taxes	26	33	56	(38)
Other assets	(46)	0	2	18
Accounts payable and accrued liabilities	102	(41)	(43)	(87)
Accrued payroll and employee benefits	5	10	(21)	(66)
Other long-term liabilities	2	(1)	(10)	2
Total cash flows provided by operating activities of continuing operations	399	385	396	191
Cash flows from investing activities of continuing operations:
Expenditures for property, plant and equipment	(27)	(29)	(29)	(53)
Acquisitions of businesses, net of cash acquired	(2)	0	0	(3)
Payments on accrued purchase price related to prior acquisition	(13)	0	0	0
Net proceeds from sale of assets	79	0	0	65
Proceeds from disposition of business, net of cash sold of $2 million	27	0	0	0
Proceeds from U.S. Treasury cash grant	0	80	80	0
Net proceeds of cost method investments	0	0	0	12
Dividend received from the separation of New SAIC	0	0	0	295
Contribution paid related to the separation of New SAIC	0	0	0	(26)
Other	0	0	0	7
Total cash flows provided by investing activities of continuing operations	64	51	51	297
Cash flows from financing activities of continuing operations:
Payments on notes payable and long-term debt	(39)	(154)	(177)	(152)
Payments for deferred financing costs	0	0	0	(5)
Payment from New SAIC for deferred financing costs	0	0	0	5
Proceeds from real estate financing transaction	0	0	0	38
Payments on real estate financing transaction	(8)	0	0	0
Proceeds from debt issuance	0	0	0	500
Distribution of debt to New SAIC	0	0	0	(500)
Sales of stock and exercises of stock options	6	7	7	13
Repurchases of stock and stock received for tax withholdings	(118)	(213)	(215)	(319)
Dividend payments	(93)	(72)	(95)	(477)
Other	3	1	2	3
Total cash flows used in financing activities of continuing operations	(249)	(431)	(478)	(894)
Increase (decrease) in cash and cash equivalents from continuing operations	214	5	(31)	(406)
Cash flows from discontinued operations:
(Decrease) increase in cash and cash equivalents from discontinued operations	(7)	(5)	15	118
Cash (used in) provided by operating activities of discontinued operations	6	29	29	(17)
(Decrease) increase in cash and cash equivalents from discontinued operations	(1)	24	44	101
Total increase (decrease) in cash and cash equivalents	213	29	13	(305)
Cash and cash equivalents at beginning of year	443	430	430	735
Cash and cash equivalents at end of year	656	459	443	430
Leidos, Inc.
Cash flows from operating activities of continuing operations:
Net income (loss)	248	(328)	(317)	166
Loss (income) from discontinued operations	1	11	(7)	(80)
Adjustments to reconcile net income (loss) to net cash provided by continuing operations:
Depreciation and amortization	41	58	62	80
Stock-based compensation	30	40	42	55
Goodwill impairment charges	0	486	486	0
Asset impairment charges	33	41	81	51
Restructuring charges	3	1	3	17
(Gain) loss on a real estate sale	(82)	0	0	2
Bad debt expense	(3)	(3)	(1)	42
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Receivables	(19)	68	162	(69)
Inventory, prepaid expenses and other current assets	3	6	(12)	44
Income taxes receivable/payable	55	4	(87)	54
Deferred income taxes	26	33	56	(38)
Other assets	(46)	0	2	18
Accounts payable and accrued liabilities	102	(41)	(43)	(87)
Accrued payroll and employee benefits	5	10	(21)	(66)
Other long-term liabilities	2	(1)	(10)	2
Total cash flows provided by operating activities of continuing operations	399	385	396	191
Cash flows from investing activities of continuing operations:
Proceeds on obligations of Leidos Holdings, Inc.	9	142	156	13
Payments on obligations of Leidos Holdings, Inc.	(211)	(419)	(457)	(501)
Expenditures for property, plant and equipment	(27)	(29)	(29)	(53)
Acquisitions of businesses, net of cash acquired	(2)	0	0	(3)
Payments on accrued purchase price related to prior acquisition	(13)	0	0	0
Net proceeds from sale of assets	79	0	0	65
Proceeds from disposition of business, net of cash sold of $2 million	27	0	0	0
Proceeds from U.S. Treasury cash grant	0	80	80	0
Net proceeds of cost method investments	0	0	0	12
Contribution paid related to the separation of New SAIC	0	0	0	(26)
Other	0	0	0	7
Total cash flows provided by investing activities of continuing operations	(138)	(226)	(250)	(486)
Cash flows from financing activities of continuing operations:
Payments on notes payable and long-term debt	(39)	(154)	(177)	(152)
Payments for deferred financing costs	0	0	0	(5)
Payment from New SAIC for deferred financing costs	0	0	0	5
Proceeds from real estate financing transaction	0	0	0	38
Payments on real estate financing transaction	(8)	0	0	0
Other	0	0	0	3
Total cash flows used in financing activities of continuing operations	(47)	(154)	(177)	(111)
Increase (decrease) in cash and cash equivalents from continuing operations	214	5	(31)	(406)
Cash flows from discontinued operations:
(Decrease) increase in cash and cash equivalents from discontinued operations	(7)	(5)	15	118
Cash (used in) provided by operating activities of discontinued operations	6	29	29	(17)
(Decrease) increase in cash and cash equivalents from discontinued operations	(1)	24	44	101
Total increase (decrease) in cash and cash equivalents	213	29	13	(305)
Cash and cash equivalents at beginning of year	443	430	430	735
Cash and cash equivalents at end of year	$ 656	$ 459	$ 443	$ 430