Retirement Plans Additional Information (Details) - USD ($)
|
1 Months Ended |
3 Months Ended |
9 Months Ended |
12 Months Ended |
May 31, 2018 |
Dec. 28, 2019 |
Sep. 28, 2019 |
Dec. 28, 2019 |
Dec. 29, 2018 |
Dec. 30, 2017 |
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
|
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| Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year |
|
$ 1,000,000
|
|
$ 1,000,000
|
|
|
| Employer contribution |
|
|
|
|
$ 71,000,000
|
|
| Defined benefit plans, incremental contributions by employer |
|
|
|
|
35,000,000
|
|
| Reduction in benefit obligation |
$ 33,000,000
|
|
|
|
|
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| Settlement payments |
|
|
|
66,000,000
|
|
|
| Settlements |
|
(9,000,000)
|
$ (3,000,000)
|
(12,000,000)
|
0
|
$ (18,000,000)
|
| Actuarial (loss) gain |
|
|
|
100,000,000
|
(97,000,000)
|
76,000,000
|
| Pension Benefits |
|
|
|
|
|
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
|
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| Assets for Plan Benefits, Defined Benefit Plan |
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$ 22,000,000
|
|
22,000,000
|
0
|
0
|
| Employer contribution |
|
|
|
1,000,000
|
71,000,000
|
36,000,000
|
| Actuarial (loss) gain |
|
|
|
100,000,000
|
(97,000,000)
|
76,000,000
|
| Defined Contribution Plan 401K |
|
|
|
|
|
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
|
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| Company's contributions to plan |
|
|
|
$ 51,000,000
|
$ 47,000,000
|
$ 46,000,000
|
| Equity Securities |
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|
|
|
|
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| Defined Benefit Plan Disclosure [Line Items] |
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|
|
|
|
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| Defined benefit plan target asset allocations |
|
35.00%
|
|
35.00%
|
|
|
| Defined benefit actual plan asset allocations |
|
34.00%
|
|
34.00%
|
|
|
| Debt Securities |
|
|
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
|
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| Defined benefit plan target asset allocations |
|
65.00%
|
|
65.00%
|
|
|
| Defined benefit actual plan asset allocations |
|
66.00%
|
|
66.00%
|
|
|
| Maximum |
|
|
|
|
|
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
|
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| Change in health care cost |
|
|
|
$ 1,000,000
|
|
|