Leases - Future Minimum Lease Payments (Details) $ in Millions	9 Months Ended
	Sep. 28, 2019 USD ($)
Operating Leases
Remainder of 2019	$ 11
2020	47
2021	39
2022	34
2023	29
2024	7
After 2024	25
Total lease payments	192
Less amount representing interest	(29)
Present value of lease liabilities	163
Finance Leases
2019	34
2020	105
2021	83
2022	60
2023	57
2024	40
After 2024	26
Total lease payments	405
Less amount representing interest	(30)
Present value of lease liabilities	375
Total
2019	45
2020	152
2021	122
2022	94
2023	86
2024	47
After 2024	51
Total lease payments	597
Less amount representing interest	(59)
Present value of lease liabilities	538
Operating lease payments	$ 24