Retirement Plans Funded Status of the Defined Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Change in benefit obligation:
Actuarial (gain) loss		$ 58	$ 274
Settlement	$ (671)	0	0
Change in plan assets:
Fair value of plan assets as of beginning of year	760
Settlement	(671)	0	0
Fair value of plan assets as of end of year	89	760
Amounts recognized in the consolidated balance sheets consist of the following:
Accrued benefit obligation—noncurrent	(4)	(5)
Pension Benefits
Change in benefit obligation:
Benefit obligation as of beginning of year	777	720	1,016
Service cost	2	2	3
Interest cost	17	38	30
Actuarial (gain) loss	(74)	58	(274)
Benefit disbursements	(28)	(41)	(55)
Projected benefit obligation as of end of year	23	777	720
Change in plan assets:
Fair value of plan assets as of beginning of year	760	753	1,103
(Loss) return on plan assets	25	48	(295)
Benefit disbursements	(28)	(41)	(55)
Fair value of plan assets as of end of year	86	760	753
Net funded status	63	(17)	33
Amounts recognized in the consolidated balance sheets consist of the following:
Prepaid benefit obligation—noncurrent	63	0	34
Accrued benefit obligation—current	0	(16)	0
Accrued benefit obligation—noncurrent	0	(1)	(1)
Net amount recognized in the consolidated balance sheets	63	(17)	33
Amounts recognized in accumulated other comprehensive loss consist of the following:
Net loss	3	213	159
Net loss recognized in accumulated other comprehensive loss	3	213	159
Accumulated benefit obligation	21	775	717
Other Postretirement Plans
Change in benefit obligation:
Benefit obligation as of beginning of year	5	5	6
Benefit disbursements	(1)	(1)	(1)
Other	1	1	0
Projected benefit obligation as of end of year	5	5	5
Change in plan assets:
Fair value of plan assets as of beginning of year	0	0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer	1	1	1
Benefit disbursements	(1)	(1)	(1)
Fair value of plan assets as of end of year	0	0	0
Net funded status	(5)	(5)	(5)
Amounts recognized in the consolidated balance sheets consist of the following:
Accrued benefit obligation—current	(1)	(1)	(1)
Accrued benefit obligation—noncurrent	(4)	(4)	(4)
Net amount recognized in the consolidated balance sheets	(5)	(5)	(5)
Amounts recognized in accumulated other comprehensive loss consist of the following:
Net loss	1	1	1
Net loss recognized in accumulated other comprehensive loss	1	1	1
Accumulated benefit obligation	$ 5	$ 5	$ 5