Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at beginning of year (in shares) at Dec. 30, 2017		215,000,000
Balance at beginning of year at Dec. 30, 2017	$ 2,751	$ 2	$ 2,720	$ 124	$ (95)
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 (loss) income	407			407
Balance at end of year at Dec. 29, 2018	3,229	$ 2	2,780	531	(84)
Shares, Outstanding, Ending Balance 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)		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 (loss) income	385			385
Balance at end of year at Dec. 28, 2019	3,709	$ 2	2,845	916	(54)
Shares, Outstanding, Ending Balance at Dec. 28, 2019		220,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	40		40
Proceeds from employee share purchase plan (in shares)		1,000,000
Proceeds from employee stock purchase plan	$ 18		18
Exercise of stock options (in shares)	192,878	0
Exercise of stock options	$ 3		3
Tax withholding payments for net share-settled equity awards	(5)		(5)
Series A convertible preferred stock dividends	(28)			(28)
Changes in retirement benefit obligations, net of income tax	23				23
Unrecognized (loss) gain on interest rate swaps	(3)				(3)
Adoption of ASU 2016-13 (Note 3 and Note 7)	(1)			(1)
Net (loss) income	(226)			(226)
Balance at end of year at Jan. 02, 2021	$ 3,530	$ 2	$ 2,901	$ 661	$ (34)
Shares, Outstanding, Ending Balance at Jan. 02, 2021		221,000,000