Pension and Other Retirement Plans - Plan Assets (Details) - USD ($) $ in Millions	Dec. 29, 2024	Dec. 31, 2023	Jan. 01, 2023
Defined Benefit Plan, Plan Assets, Category [Line Items]
Total plan assets	$ 1,498	$ 1,551	$ 1,518
Nonqualified Plan
Defined Benefit Plan, Plan Assets, Category [Line Items]
Total plan assets	141	128
Cash and cash equivalents, net of unsettled transactions
Defined Benefit Plan, Plan Assets, Category [Line Items]
Total plan assets	$ 198	159
Cash and cash equivalents, net of unsettled transactions \| Minimum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	0.00%
Cash and cash equivalents, net of unsettled transactions \| Maximum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	15.00%
Equity securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Total plan assets	$ 511	508
Equity securities \| Minimum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	30.00%
Equity securities \| Maximum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	50.00%
Debt securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Total plan assets	$ 493	582
Debt securities \| Minimum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	30.00%
Debt securities \| Maximum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	50.00%
Alternative assets
Defined Benefit Plan, Plan Assets, Category [Line Items]
Total plan assets	$ 296	$ 302
Alternative assets \| Minimum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	2.00%
Alternative assets \| Maximum
Defined Benefit Plan, Plan Assets, Category [Line Items]
Target Range (as a percent)	25.00%