UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Income Statement [Abstract]
Net revenue	$ 467	$ 383	$ 909	$ 737
Cost of sales	116	110	232	209
Gross profit	351	273	677	528
Operating expenses:
Sales and marketing	89	80	174	140
Research and development	48	37	92	75
General and administrative	45	42	93	100
Amortization of intangibles	13	36	49	72
Restructuring charges (Note 9)	0	0	8	1
Total operating expenses	195	195	416	388
Operating income	156	78	261	140
Interest expense and other, net	58	74	118	149
Foreign exchange gain (loss), net	(20)	(17)	15	6
Income (loss) from continuing operations before income taxes	78	(13)	158	(15)
Provision for income tax expense (benefit)	10	5	7	(5)
Income (loss) from continuing operations	68	(18)	151	(10)
Income from discontinued operations, net of taxes	40	40	51	41
Net income	108	$ 22	202	$ 31
Less: Net income attributable to redeemable noncontrolling interests	72		136
Net income attributable to McAfee Corp.	36		66
Net income attributable to McAfee Corp.:
Income from continuing operations attributable to McAfee Corp.	23		50
Income from discontinued operations attributable to McAfee Corp.	13		16
Net income attributable to McAfee Corp.	$ 36		$ 66
Earnings per share attributable to McAfee Corp., basic:
Continuing operations	$ 0.14		$ 0.31
Discontinued operations	0.08		0.10
Earnings per share, basic	0.22		0.40
Earnings per share attributable to McAfee Corp., diluted:
Continuing operations	0.14		0.30
Discontinued operations	0.07		0.09
Earnings per share, diluted	$ 0.21		$ 0.39
Weighted-average shares outstanding, basic	165.0		163.7
Weighted-average shares outstanding, diluted	182.8		179.5