CONSOLIDATED STATEMENTS OF EQUITY (DEFICIT) AND REDEEMABLE NONCONTROLLING INTERESTS - USD ($) $ in Millions	Total	Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests Activity in Connection with Reorganization Transactions and IPO	Redeemable Noncontrolling Interests Activity subsequent to Reorganization Transactions and IPO	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Activity subsequent to Reorganization Transactions and IPO	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Activity subsequent to Reorganization Transactions and IPO	Common Stock	Common Stock Class A Common Stock	Common Stock Class A Common Stock Activity subsequent to Reorganization Transactions and IPO	Common Stock Class B Common Stock	Common Stock Class B Common Stock Activity subsequent to Reorganization Transactions and IPO	Common Stock Redeemable Noncontrolling Interests	Additional Paid-in Capital	Additional Paid-in Capital Activity subsequent to Reorganization Transactions and IPO	Total Parent Entity Deficit	Total Parent Entity Deficit Activity subsequent to Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Accumulated Other Comprehensive Income (Loss)	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Accumulated Other Comprehensive Income (Loss) Activity Prior To Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Accumulated Other Comprehensive Income (Loss) Activity in Connection with Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Members' Equity (Deficit)	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Members' Equity (Deficit) Activity Prior To Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Members' Equity (Deficit) Activity in Connection with Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Retained Earnings (Accumulated Deficit)	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Retained Earnings (Accumulated Deficit) Activity Prior To Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Retained Earnings (Accumulated Deficit) Activity in Connection with Reorganization Transactions and IPO	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Foundation Technology Worldwide L L C Prior To Reorganization Transactions Total Parent Entity Deficit Activity in Connection with Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity	McAfee Corp. Stockholders' Equity Activity Prior To Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Activity in Connection with Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Activity subsequent to Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Cumulative Effect, Period of Adoption, Adjustment	McAfee Corp. Stockholders' Equity Accumulated Other Comprehensive Income (Loss)	McAfee Corp. Stockholders' Equity Accumulated Other Comprehensive Income (Loss) Activity in Connection with Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Retained Earnings (Accumulated Deficit)	McAfee Corp. Stockholders' Equity Common Stock Class A Common Stock	McAfee Corp. Stockholders' Equity Common Stock Class A Common Stock Activity in Connection with Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Common Stock Class B Common Stock	McAfee Corp. Stockholders' Equity Common Stock Class B Common Stock Activity in Connection with Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Additional Paid-in Capital	McAfee Corp. Stockholders' Equity Additional Paid-in Capital Activity in Connection with Reorganization Transactions and IPO	McAfee Corp. Stockholders' Equity Total Parent Entity Deficit	McAfee Corp. Stockholders' Equity Total Parent Entity Deficit Activity in Connection with Reorganization Transactions and IPO
Beginning Balance at Dec. 29, 2018																																								$ 0
Balance at Dec. 29, 2018																			$ 2			$ 675			$ (1,148)			$ (1)		$ (471)				$ (1)	$ 0		$ 0	$ 0				$ 0		$ 0
Balance, Shares at Dec. 29, 2018																																						0		0
Accounting Standards Update [Extensible List]	ASC Topic 606
Distributions to Members																						(1,338)								(1,338)
Other comprehensive loss, net of tax																			(64)											(64)
Equity-based awards expense, net of equity withheld to cover taxes																						17								17
Dividend declared	$ (1,338)
Unit issuances																						1								1
Unit repurchases																						(2)								(2)
Net income (loss)	(236)																								(236)					(236)
Balance at Dec. 28, 2019														$ 0					(62)			(647)			(1,385)					(2,094)					$ 0		$ 0	$ 0		$ 0		$ 0		$ 0
Balance, Shares at Dec. 28, 2019																																						0		0
Distributions to Members																							$ (276)								$ (276)
Distributions to RNCI				$ (24)																													$ (24)
Other comprehensive loss, net of tax				8		$ 4												$ 4		$ (71)											(71)		12
Equity-based awards expense, net of equity withheld to cover taxes																							24								24
Dividend declared	(314)															$ (14)		(14)															(14)
Stock compensation expense, net of withholding to cover taxes																261		261															261
Stock compensation expense, net of withholding to cover taxes, Shares											3,970,830
Unit issuances																							2								2
Unit repurchases																							(10)								10
Reclassification of redeemable units (Note 7)																							(41)								(41)
Reclassification of redeemable units (Note 7)																							41								41
Net income (loss)	(289)			(197)				$ (118)										(118)								$ 26					26		(315)
Other																(13)		(13)					$ 2								$ 2		(13)
Impact of reorganization transactions																					$ 133			$ 905			$ 1,359		$ (2,397)							$ (133)							$ (2,264)
Issuance of Class A common stock, net of costs, Shares																																							126,314,024
Issuance of Class B common stock, Shares																																									268,779,392
Initial effect of the Reorganization Transactions and IPO on redeemable noncontrolling interests			$ (1,052)																																	$ 84							968		$ 1,052
Proceeds from IPO on sale of Class A shares																																$ 586											586		586
Proceeds from IPO on sale of Class A shares, Shares																																							30,982,558
Purchase of FTW LLC units																																(33)											(33)		(33)
Purchase of FTW LLC Units, Shares																																									(1,714,265)
IPO costs capitalized																																(11)											(11)		(11)
Deferred tax adjustment																																$ 148											$ 148		$ 148
Fair value adjustment for RNCI				5,931												(5,931)		(5,931)
Impact of change in ownership in RNCI				174												(174)		(174)
Balance subsequent to Reorganization Transactions and IPO at Dec. 26, 2020						$ (49)										$ (606)		$ (655)															$ (1,707)
Balance subsequent to Reorganization Transactions and IPO, Shares at Dec. 26, 2020											157,296,582		267,065,127
Temporary equity, Balance subsequent to Reorganization Transactions and IPO at Dec. 26, 2020				$ (1,052)
Balance at Dec. 26, 2020	(6,640)				$ (45)		$ (118)			$ 0					$ (6,477)		$ (6,640)		0			0			0					(1,800)
Balance, Shares at Dec. 26, 2020										161,267,412		267,065,127
Temporary equity, Balance at Dec. 26, 2020	4,840	$ 4,840
Distributions to RNCI		(1,878)																												(1,878)
Other comprehensive loss, net of tax		46			29												29													75
Dividend declared	(3,041)						(690)								(129)		(819)													(819)
Stock compensation expense, net of withholding to cover taxes		3													2		2													5
Stock compensation expense, net of withholding to cover taxes, Shares									6,541,265
RNCI units conversion into Class A shares										17,477,113		(13,879,504)
Net income (loss)	2,688	1,839					849										849													2,688
Other															(7)		(7)													(7)
Stock issuances															15		15													15
Stock issuances, Shares									850,957
Deferred tax adjustments															223		223													223
TRA adjustments															(121)		(121)													(121)
Fair value adjustment for RNCI		1,668													(1,668)		(1,668)
Impact of change in ownership in RNCI		$ 102			(3)										(99)		(102)
Balance at Dec. 25, 2021	(8,239)				$ (19)		$ 41			$ 0		$ 0		$ 6,620	$ (8,261)		$ (8,239)		$ 0			$ 0			$ 0					$ (1,619)
Balance, Shares at Dec. 25, 2021										186,136,747		253,185,623
Temporary equity, Balance at Dec. 25, 2021	$ 6,620