Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Earnings (Deficit)	Accumulated Other Comprehensive Loss
Balance at beginning of year (in shares) at Dec. 31, 2016		221,000,000
Balance at beginning of year at Dec. 31, 2016	$ 2,538	$ 2	$ 2,791	$ (136)	$ (119)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	19		19
Proceeds from employee share purchase plan (in shares)		1,000,000
Proceeds from employee stock purchase plan	16		16
Exercise of stock options (in shares)		2,000,000
Exercise of stock options	18		18
Net share-settled stock options (in shares)		1,000,000
Net share-settled stock options	0		0
Tax withholding payments for net share-settled equity awards	(28)		(28)
Common stock repurchased (in shares)		10,000,000
Common stock repurchased	(280)		(96)	(184)
Changes in retirement benefit obligations, net of income tax	16				16
Unrecognized (loss) gain on interest rate swaps	8				8
Net income	444			444
Balance at end of year at Dec. 30, 2017	2,751	$ 2	2,720	124	(95)
Balance at end of year (in shares) at Dec. 30, 2017		215,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	28		28
Proceeds from employee share purchase plan (in shares)		1,000,000
Proceeds from employee stock purchase plan	19		19
Exercise of stock options (in shares)		1,000,000
Exercise of stock options	19		19
Tax withholding payments for net share-settled equity awards	(6)		(6)
Changes in retirement benefit obligations, net of income tax	6				6
Unrecognized (loss) gain on interest rate swaps	5				5
Net income	407			407
Balance at end of year at Dec. 29, 2018	3,229	$ 2	2,780	531	(84)
Balance at end of year (in shares) at Dec. 29, 2018		217,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	32		32
Proceeds from employee share purchase plan (in shares)		1,000,000
Proceeds from employee stock purchase plan	$ 19		19
Exercise of stock options (in shares)	1,132,839	2,000,000
Exercise of stock options	$ 19		19
Tax withholding payments for net share-settled equity awards	(5)		(5)
Changes in retirement benefit obligations, net of income tax	45				45
Unrecognized (loss) gain on interest rate swaps	(15)				(15)
Net income	385			385
Balance at end of year at Dec. 28, 2019	$ 3,709	$ 2	$ 2,845	$ 916	$ (54)
Balance at end of year (in shares) at Dec. 28, 2019		220,000,000