Leases - Other Information Related to Lease Agreements (Details) $ in Millions	6 Months Ended
	Jun. 29, 2019 USD ($)
Cash Paid For Amounts Included In Measurement of Liabilities
Operating cash flows from operating leases	$ 6
Operating cash flows from financing leases	3
Financing cash flows from financing leases	$ 21
Weighted-average remaining lease term (years):
Operating leases	5 years 10 months 13 days
Financing leases	5 years 7 months 9 days
Weighted-average discount rate:
Operating leases	4.60%
Financing leases	3.60%