Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 48
Variable Lease, Cost	9
Operating Lease, Payments	48
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 13
Operating Lease, Weighted Average Remaining Lease Term	6 years 2 months
Operating Lease, Weighted Average Discount Rate, Percent	4.00%
Operating Lease, Right-of-Use Asset	$ 600
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Operating Lease, Liability, Current	$ 156
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent
Operating Lease, Liability, Noncurrent	$ 487
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent
Operating Lease Liabilities, Payments Due [Abstract]
Remainder of 2019	$ 140
2020	158
2021	116
2022	84
2023	57
2024	39
2025 and Thereafter	134
Total Lease Payments	728
Less: Imputed Interest	85
Total Operating Lease Liability	$ 643
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019		$ 192
2020		158
2021		118
2022		86
2023		58
2024 and Thereafter		177
Operating Leases, Future Minimum Payments Due		$ 789
Minimum [Member]
Lessee, Lease, Description [Line Items]
Remaining Lease Term, Operating Leases	1 month
Lessee, Operating Lease, Renewal Term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Remaining Lease Term, Operating Leases	30 years
Lessee, Operating Lease, Renewal Term	10 years
Lessee, Operating Lease, Option to Terminate, Term	1 year
Guarantee Type, Other [Member]
Lessee, Lease, Description [Line Items]
Maximum Residual Value Guarantee	$ 147