Retirement Plans Funded Status of the Defined Benefit Plans (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 28, 2019 |
Dec. 29, 2018 |
Dec. 30, 2017 |
| Change in benefit obligation: |
|
|
|
| Actuarial loss (gain) |
$ 100
|
$ (97)
|
$ 76
|
| Change in plan assets: |
|
|
|
| Fair value of plan assets as of beginning of year |
836
|
|
|
| Employer contribution |
|
71
|
|
| Fair value of plan assets as of end of year |
923
|
836
|
|
| Amounts recognized in the consolidated balance sheets consist of the following: |
|
|
|
| Accrued benefit obligation—noncurrent |
(7)
|
(40)
|
|
| Pension Benefits |
|
|
|
| Change in benefit obligation: |
|
|
|
| Benefit obligation as of beginning of year |
871
|
976
|
966
|
| Service cost |
2
|
2
|
2
|
| Interest cost |
37
|
36
|
40
|
| Actuarial loss (gain) |
100
|
(97)
|
76
|
| Settlements |
(84)
|
0
|
(87)
|
| Benefit disbursements |
(23)
|
(46)
|
(21)
|
| Benefit obligation as of end of year |
903
|
871
|
976
|
| Change in plan assets: |
|
|
|
| Fair value of plan assets as of beginning of year |
836
|
851
|
799
|
| Return on plan assets |
193
|
(40)
|
124
|
| Employer contribution |
1
|
71
|
36
|
| Settlements |
(84)
|
0
|
(87)
|
| Benefit disbursements |
(23)
|
(46)
|
(21)
|
| Fair value of plan assets as of end of year |
923
|
836
|
851
|
| Net funded status |
20
|
(35)
|
(125)
|
| Amounts recognized in the consolidated balance sheets consist of the following: |
|
|
|
| Assets for Plan Benefits, Defined Benefit Plan |
22
|
0
|
0
|
| Accrued benefit obligation—current |
0
|
0
|
(1)
|
| Accrued benefit obligation—noncurrent |
(2)
|
(35)
|
(124)
|
| Net amount recognized in the consolidated balance sheets |
20
|
(35)
|
(125)
|
| Amounts recognized in accumulated other comprehensive loss consist of the following: |
|
|
|
| Net loss |
129
|
190
|
199
|
| Net loss recognized in accumulated other comprehensive loss |
129
|
190
|
199
|
| Accumulated benefit obligation |
899
|
869
|
974
|
| Other Postretirement Plans |
|
|
|
| Change in benefit obligation: |
|
|
|
| Benefit obligation as of beginning of year |
6
|
7
|
7
|
| Benefit disbursements |
(1)
|
(1)
|
(1)
|
| Other |
1
|
0
|
1
|
| Benefit obligation as of end of year |
6
|
6
|
7
|
| Change in plan assets: |
|
|
|
| Fair value of plan assets as of beginning of year |
0
|
0
|
0
|
| Employer contribution |
1
|
1
|
1
|
| Benefit disbursements |
(1)
|
(1)
|
(1)
|
| Fair value of plan assets as of end of year |
0
|
0
|
0
|
| Net funded status |
(6)
|
(6)
|
(7)
|
| Amounts recognized in the consolidated balance sheets consist of the following: |
|
|
|
| Accrued benefit obligation—current |
(1)
|
(1)
|
(1)
|
| Accrued benefit obligation—noncurrent |
(5)
|
(5)
|
(6)
|
| Net amount recognized in the consolidated balance sheets |
(6)
|
(6)
|
(7)
|
| 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
|