CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Leidos stockholders' equity	Shares of common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Non-controlling interest
Beginning balance (in shares) at Dec. 31, 2021			140,000,000
Beginning balance at Dec. 31, 2021	$ 4,344	$ 4,291		$ 2,423	$ 1,880	$ (12)	$ 53
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	177	175			175		2
Other comprehensive income, net of taxes	32	32				32
Issuances of stock (in shares)			1,000,000
Issuances of stock	15	15		15
Repurchases of stock and other (in shares)			(4,000,000)
Repurchases of stock and other	(526)	(526)		(526)
Dividends	(48)	(48)			(48)
Stock-based compensation	16	16		16
Net capital distributions to non-controlling interest	(2)						(2)
Ending balance (in shares) at Apr. 01, 2022			137,000,000
Ending balance at Apr. 01, 2022	$ 4,008	3,955		1,928	2,007	20	53
Beginning balance (in shares) at Dec. 30, 2022	137,000,000		137,000,000
Beginning balance at Dec. 30, 2022	$ 4,353	4,299		2,005	2,367	(73)	54
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	164	162			162		2
Other comprehensive income, net of taxes	9	9				9
Issuances of stock	14	14		14
Repurchases of stock and other	(43)	(43)		(43)
Dividends	(50)	(50)			(50)
Stock-based compensation	18	18		18
Net capital distributions to non-controlling interest	$ (1)						(1)
Ending balance (in shares) at Mar. 31, 2023	137,000,000		137,000,000
Ending balance at Mar. 31, 2023	$ 4,464	$ 4,409		$ 1,994	$ 2,479	$ (64)	$ 55