Recent Accounting Standards and Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 30, 2019	Dec. 29, 2018	Dec. 30, 2017	Dec. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other long-term liabilities	$ 2,797	$ 2,646
Option to extend	40 years
Lessor, Operating Lease, Renewal Term	40 years
Weighted average remaining lease term	5 years 2 months 12 days
Weighted average discount rate	3.70%
Lease expense	$ 47
Operating Lease Liabilities, Payments Due [Abstract]
Remainder of 2019	138
2020	160
2021	116
2022	91
2023	65
2024 and Thereafter	106
Total	676
Present value of lease payments	$ 615
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Lease expense		231	$ 264
2019		229
2020		181
2021		133
2022		101
2023		70
2024 and Thereafter		121
Total		$ 835
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease term	1 year
Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease term	10 years
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid land use rights				$ 81
Accrued liabilities				180
Other long-term liabilities				445
Other Noncurrent Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Leased assets	$ 696
Other Noncurrent Assets [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Leased assets				$ 706
Accrued Liabilities [Member]
Operating Lease Liabilities, Payments Due [Abstract]
Present value of lease payments	177
Other Long-Term Liabilities [Member]
Operating Lease Liabilities, Payments Due [Abstract]
Present value of lease payments	$ 438